









                                 DX-COMM PLUS 
                                    
          (C)opyright 1992,1993 & 1994 By Eric B. Svenson/EBS Consultants
                                    
                                    
                 A Terminal Control Program and Shortwave
                 Database for the DRAKE R8 Communications
                                  Receiver
                                    
                                    
            










        DX-COMM PLUS is a shortwave broadcast database management program
        providing a total monitoring environment for use with the Drake R8
        Communications receiver.  It requires a 80286 CPU or later IBM PC
        compatible computer equipped with a CGA, EGA, or VGA monitor and
        preferably a hard drive. It allows the user to control the Drake
        R8, upload database records to the Drake, to download frequencies
        off the Drake to create new database records, and to monitor
        digital signals such as RTTY and CW using a TNC.  These and other
        features are described in this manual and the updated Readme.Txt 
        files included with this software.

        DX-COMM PLUS was commercial software, between February 1993 and 
        December 1993.  The author, Eric B. Svenson, Jr. has decided 
        as of 1/1/94 to permanently distribute the program as "shareware". 
        DX-COMM Plus is a significantly enhanced version of the previously 
        released 1992 shareware DX-COMM versions 3.3, 3.2, 3.01 and the 
        versions called QUICKCOMM 2.32, 2.1 and 1.01.  


                                       -2-

        DISCLAIMERS AND TRADEMARKS:

        Throughout this document reference is made to "Drake" or "Drake
        R8".  This reference is to the Drake R8 Communications Receiver
        manufactured by the R.L. Drake Company of Miamisburg, Ohio.  The
        author of the program DX-COMM PLUS is not an employee, an agent, or
        affiliated with the R.L. Drake Company and makes no claims as
        representing the interests of the R.L. Drake Company. 
               
        Reference is also made to the TRS Database.  This database is the
        internationally acclaimed English Language Shortwave Broadcast
        database by Tom Sundstrom.  It is for sale on a subscription basis
        by TRS Consultants through the PICs ONLINE RBBS at 609-753-2540 by
        typing "TRS" at Main Menu prompt; or by writing to TRS Consultants
        at PO Box 2275, Vincentown, New Jersey, 08088-2275; or by phoning
        609-859-2447; or by Fax 609-859-3226.

        Reference is made to IBM. IBM is a registered trademark of the
        International Business Machines Corporation.  Likewise, MFJ 1278 is
        a registered trademark and product of MFJ Enterprises,
        Incorporated.  AEA PK-232MBX is a registered trademark and product
        of Advanced Electronic Applications, Inc.  MSDOS and Windows are
        registered trademarks and products of the Microsoft Corporation.

        COPYRIGHT

        The software described by this document (herein referred to as "DX-
        COMM or DX-COMM PLUS") is copyrighted and all rights are reserved
        by Eric B. Svenson, Jr.  This manual is copyrighted and all rights
        reserved.  Any modifications to the manual require the prior
        consent, in writing, from:

                        Eric B. Svenson, Jr.
                        EBS Consultants
                        PO Box 1361
                        Summit, New Jersey 07901
                        (908) 522-8941


        Included in this shareware program is the run-time module 
        BRT71EFR.EXE whose distribution is governed by the following
        copywright notice:  
        
                Portions(C) 1982-1990 Microsoft Corporation.  All
                rights reserved.

                                      -3-


        DEDICATION

        This program is dedicated to the memory of my loving mother, Louise
        W. Svenson, who passed away after a long illness of Lou Gehrig's
        disease on October 17, 1992.  Throughout my life she was a
        tremendous motivator to do the best at whatever I set out to do. 
        I like to think that this program would meet her expectations. 
        This program also would not have been possible without the
        tremendous support provided by my wife Cindie and my children
        Cassandra and Heather. They knew that the many hours I spent
        creating it was therapeutic for my frame of mind.


        SPECIAL APPRECIATION AND THANKS

        This program has involved over a year of work and testing.   There
        are four fellow SWL hobbyists who I am extremely grateful for their
        help.  They not only assisted in the testing and debugging of the
        program, but provide invaluable ideas for making the program
        better.  These individuals are:

                        Greg Achenbach of Denver, Colorado
                        Robert Atkinson of Wilmington, Delaware
                        Thomas Peterson of Cleveland Hts, Ohio
                        Robert Rogerson of Springdale, Arkansas

                                      -4-






                                      -5-

               
                                TABLE OF CONTENTS

                                                                       
                                                                  PAGE
        Introduction ..........................................    9

        Installation and Program Configuration.................    9

        Listing Shortwave/Utility Stations ....................   17

        Uploading Database Data to The Drake R8 ...............   18

        Displaying Utility Broadcasts with Center .............   19
          Frequency Offset

        Displaying Database Information for Other .............   20      
          Time Periods

        Decrementing/Incrementing the Drake Frequency .........   20

        Accessing the Command Screen ..........................   20

        Database Display Screen - Five Ways to Display ........   22
          Records: TSF, TFS, FST, SFT, and STF                    

        Maximum Useable and Lowest Useable Frequency Calc......   25

        24 Hour Plots of Predicted High Frequency .............   27
          Propagation 

        Logging New Stations Into DX-COMM PLUS's Database .....   29

        Alternate Method of Entering Frequency in .............   34      
          New or Edited Record

        Add Record Feature of Database Menu Screen ............   34

        Editing and Deleting Records ..........................   35

        Undeleting Records ....................................   36

        Deleting Records Directly From Within .................   37
          Database Display Screen          

        Field Capture, Global Edit, and Field Import ..........   37
          Feature 

        Find, Edit, and Delete ................................   38


                                      -6-


        TABLE OF CONTENTS (Continued)

                                                                                                             
                                                                 PAGE
        Adding Frequencies to the Drake R8 Memory .............   40    

        The TNC Window ........................................   40      

        Scanning Records ......................................   43

        Audio Cassette Recorder Control .......................   44     

        Alert Feature .........................................   46

        Printing Records ......................................   47

        DOS SHELL .............................................   48

        Exiting DX-COMM PLUS...................................   48

        TRS DATABASE

                Importing The TRS SWBC Database Into ............ 49
                  DX-COMM PLUS                              

                Editing or Adding to the TRS SWBC Database .....  51          

                Copying Records Between Databases ..............  51     

        APPENDICES

                Appendix A: Using DX-COMM's version 1.01, 2.1,..  53
                  2.32, 3.01, 3.2 & 3.3 SWDB.DAT                        

                Appendix B: Programming Considerations ........   55

                Appendix C: Program Enhancements ..............   57

                Appendix D: Modifying the Database to Use .....   60
                  Only One Antenna

                Appendix E: Troubleshooting ...................   61          

                Appendix F:  DX-COMM PLUS COMMAND SUMMARY

                        F-1: Database Display Screen............  63

                        F-2: Database Menu Screen ..............  64
     


                                      -7-
        TABLE OF CONTENTS (Continued)

                                                                  
                                                                 PAGE
                        F-3: Command Screen ....................  65

                        F-4: TNC Window.........................  67

                        F-5: Edit Record Screen ................  68

                        F-6: Add Record Screen .................  68

                        F-7: Propagation Menu Screen ...........  69

                Appendix G: Alternative Terminal Handshaking ...  70
                  Protocols

                Appendix H: Windows Users ......................  72

                Appendix I: Shareware Registration &............  73
                  License Agreement
                                      -8-
                                      -9-


        INTRODUCTION 

        The program DX-COMM PLUS is designed for use with the DRAKE R8
        Communications Receiver, an IBM AT or later compatible PC with a
        CGA, EGA or VGA monitor, and a Terminal Node Controller (TNC) or
        Universal Terminal Unit (UTU) such as the MFJ-1278 or AEA PK-232
        for decoding digital ham and utility signals.  It uses one serial
        port to upload and download information from and to the receiver
        for a variety of parameters including frequency, bandwidth, VFO,
        AGC, RF, antenna, mode, noise blanker, notch filter, and
        synchronous detector.  It uses a second serial port to control and
        display decoded information from a TNC. 
          
        The program is comprised of the files DX.EXE, MUFGRAPH.EXE,
        NODE.EXE, SETUPDX.EXE, PRINTING.EXE, ALT_TERM.EXE, SWDB.DAT,
        INDX.DAT, FLAG.DAT, COM.DAT, TRSCOM.DAT and README.TXT files.  DX-
        COMM PLUS was written and compiled using Microsoft's Basic
        Professional Development System ver7.1.  The program has been
        compiled to take advantage of the 80286 series and later CPU and
        requires IBM AT or later compatible PC's with 640k of memory; a
        CGA, EGA or VGA monitor; a 1.4 meg floppy drive or hard drive; a PC
        clock speeds of 12 mHz or faster; and MSDOS version 3.1 or later. 
        If the user expects to expand the database beyond the 2500 records
        then a hard disk is required.  

        DX-COMM PLUS contains about 1700 frequency listings for
        international shortwave stations.  However, for a 640k PC this
        database can be expanded to approximately 4,000 records, provided
        one has adequate disk storage capacity (If MSDOS version 5.0 is
        used the total number of records may be expanded to approximately
        5,000). The program provides the user the capability to
        continuously add to this database, modify the database, identify
        stations as: active, inactive, utility, shortwave or special.  The
        program has comprehensive search, sort and printing routines and
        provides for the uploading of each record from the database to the
        Drake directly for frequency, bandwidth, mode and each of the
        programmable features provided as standard on the Drake R8.  

        DX-COMM PLUS also provides the user the capability of importing the
        internationally acclaimed English language shortwave database
        authored by Thomas R. Sundstrom and distributed by TRS Consultants
        (Refer to the section of this manual entitled "TRS DATABASE" for
        more information).

        INSTALLATION AND PROGRAM CONFIGURATION

        All files must reside on the same directory or sub-directory of
        your hard disk or high density disk drive.  You will need
        approximately 1.1meg of disk space for the files and approximately
        300k for temporary data storage for sorting and other operations.
                                      -10-


        Keep in mind, however, that for every additional 1000 records added
        to the database, you will need approximately 250K of additional
        disk space to run the program and sort the database.  

        As first preliminary step, make sure NUMLOCK on your keyboard is
        off, otherwise it will interfere with certain keyboard commands. 

        Start the program by typing DX at the DOS drive prompt.  The
        program will take only a few seconds to load.  The program will
        then display something like the following: 
  
                 DX-COMM PLUS: COMMUNICATIONS RECEIVER              xx:xx:xx
            TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB    AGC   RF   NOTCH  ANT MODE BAND  VFO SYNCHRO   SCAN   CHANNEL
------------------------------------------------------------------------------
                                                                           
------------------------------------------------------------------------------
Enter Command:
(C)ommands   (D)elete  (A)dd    T(N)C    (R)etrieve   Shortwave: (SB)(SA)(SI) 
    and      (T)ime    (E)dit   (F)lux#  (SP)ecial    Utility:   (UB)(UA)(UI)

INDEX#   TIME     TYPE           STATION         FREQUENCY  DAYS  S  MUF - LUF
------------------------------------------------------------------------------
 99   0100-0200 s-a  BBC LONDON                  5.97500  MTWHFAS  A      -
 100  0100-0200 s-a  BBC LONDON                  6.17500  MTWHFAS  A      -
 101  0100-0200 s-a  BBC LONDON                  7.32500  MTWHFAS  W      -
 102  0100-0200 s-a  BBC LONDON                  9.59000  MTWHFAS  A      -
 103  0100-0200 s-a  BBC LONDON                  9.91500  MTWHFAS  A      -
 104  0100-0200 s-a  BBC LONDON                 11.75000  MTWHFAS  A      -
 105  0100-0200 s-a  BBC LONDON                 12.09500  MTWHFAS  S      -
 106  0100-0200 s-a  BBC LONDON                 15.26000  MTWHFAS  A      -

(SE)tup       F2 = KHz Incr.    F3 = Toggle SWDB   F10= DOS   (X)tra   ^C=Clr 
(G)raph       F9 = Freq.Offset    ]/[ = dwn/up     F8=VFO A   ^A=Alert (Q)uit


        Take a moment and study the display.  The upper third of your
        computer monitor provides the same information provided as on the
        Drake R8 backlit LED display.  Please note, however, that data
        under the frequency and other Drake parameter headings will only be
        displayed once the radio is on and properly connected and
        configured to the correct PC com port. 

        The middle half of the monitor's display, as well as the last 2
        lines, identify commands that can be entered through your computer
        keyboard.  Now press the letter "X" on the keyboard.  You will note
        that the "X" in (X)tra is highlighted by a white background.  Some
        of the commands previously displayed will now be replaced as is
        shown below.  Both those listed before pressing "X", and those
        shown  after pressing "X", are those that are available to the user
        within the Database Display Screen.  Each command will be explained
        in more detail later. 


                                      -11-


                  DX-COMM PLUS: COMMUNICATIONS RECEIVER               2:00:48
         TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB   AGC  RF   NOTCH  ANT  MODE  BAND   VFO  SYNCHRO  SCAN  CHANNEL
-------------------------------------------------------------------------------
                                                                           
-------------------------------------------------------------------------------
Enter Command:
(C)ommands   S(W)itch  (A)dd   ^Y=Lock ^Z= SWDB Chg   ^S= Scan   ^P= Program
    and      (T)ime    (E)dit  (F)lux#   (M)emory     ^U= Untag  ^Q= Fast Quit

INDEX#  TIME    TYPE     STATION                FREQUENCY  DAYS    S  MUF - LUF
-------------------------------------------------------------------------------
 99   0100-0200 s-a  BBC LONDON                  5.97500  MTWHFAS  A      -
 100  0100-0200 s-a  BBC LONDON                  6.17500  MTWHFAS  A      -
 101  0100-0200 s-a  BBC LONDON                  7.32500  MTWHFAS  W      -
 102  0100-0200 s-a  BBC LONDON                  9.59000  MTWHFAS  A      -
 103  0100-0200 s-a  BBC LONDON                  9.91500  MTWHFAS  A      -
 104  0100-0200 s-a  BBC LONDON                 11.75000  MTWHFAS  A      -
 105  0100-0200 s-a  BBC LONDON                 12.09500  MTWHFAS  S      -
 106  0100-0200 s-a  BBC LONDON                 15.26000  MTWHFAS  A      -

^R=Review       Glo(B)al          F3 = TSF SWDB      F10= DOS    (X)tra  ^V=ACR
(G)raph      F9 = Freq. Offset    ^[= Move SWDB      F8=VFO B    ^T=Tag  (Q)uit

        The lower third of your monitor displays a list of database records
        comprising "active" shortwave stations for the time of day using
        your computer's internal clock and the DOS "TIME" function.  The
        headings over the list of records have the following meaning: 

        INDEX#   -    The Index Number corresponding to the record to
                      the record displayed;

        TIME     -    The start and end time of the station's          
                      transmission in UTC;

        TYPE     -    A descriptor to indicate whether the station     
                      is a shortwave or utility broadcast and          
                      whether the frequency is "active" or                               
                      "inactive";                                      
  
        STATION  -    The call name of the broadcaster;

        FREQUENCY-    The frequency of the station;

        DAYS     -    The days of the week that the broadcast can      
                      be heard;

        S        -    The season that the broadcaster uses this        
                      frequency (Summer/Winter, or All the time);

        MUF-LUF  -    The predicted average Maximum Useable and        
                      Lowest Useable Frequency for that broadcast. 

                                      -12-


        The number of database records displayed will depend upon the UTC
        (Universal Time) time of day (as shown in the upper right hand
        corner of the screen) and the corresponding records in the database
        for that hour.  

        Also note that the "F3" and "F9" on the bottom of your monitor's
        screen are highlighted by a white background.  These represent
        commands that may be toggled.   "F8" will also be highlighted if
        VFO A is selected.  "F8" is plain when VFO B is toggled (selected). 
        These features will be explained later.

        When the "W" key is pressed the "S", "DAYS", and "MUF-LUF" heading
        will be replaced by simply "REMARKS".  Under this heading will be
        any remarks or special notes that have been ascribed to the
        individual database records being displayed.

        Your first step is to identify to the program the serial ports you
        will be using to communicate with the DRAKE as well as other
        configuration parameters that will identify your time zone,
        location, etc..  Press the "S" key followed by the "E" key.  

        In a moment the Configuration Screen will be displayed.  Within
        this screen you will be prompted to either replace or edit the
        parameters stored in the files COM.DAT and TRSCOM.DAT which are
        displayed on the lower half of the screen.  As you edit those
        parameters the lower half of the screen will automatically be
        updated to reflect the most current information.

                  DX-COMM PLUS: COMMUNICATIONS RECEIVER               1:17:50
         TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB   AGC  RF   NOTCH  ANT  MODE  BAND   VFO  SYNCHRO  SCAN  CHANNEL
------------------------------------------------------------------------------
                                                                           
------------------------------------------------------------------------------
Com(n) port =  0



                         CONFIGURATION PARAMETERS
------------------------------------------------------------------------------
Com(n) port =  0                            UTC offset to local time =  5
Receiver Latitude =  40  44' N              Receiver Longitude =   74  10' W
TNC Com(n) port =  1                        TNC Baud rate = 9600
TNC Data Bits = 8                           TNC Parity = N
TNC Stop Bits = 1
Ctrl Sig=                                   (A)ctive/(I)nactive/(B)oth = a
RTTY Offset= 2.25                           CW Offset= .85
North Polar Aurora= 50                      South Polar Aurora= 30
Scan Delay-Seconds= 20                      Default Datastring=  00 682<8sa


        The following, "COM(n) port =", should be displayed and highlighted
        by a white background where the "Enter Command:" statement in the
                                      -13-


        Database Display Screen was previously.  Enter either 1, or 2
        depending on the serial port you are using to connect to the DRAKE
        R8.  Or enter "0" if DX-COMM PLUS is not going to be interfaced
        with the Drake.  After typing a "0", "1" or a "2" you must press
        <ENTER> to have the program accept the new value and to advance to
        the next step within the setup routine.  If after typing say "1"
        and you realize that it is com port "2" that you really desire,
        then press the BACKSPACE key and retype "2" followed by <ENTER>. 
        (Note: in any of the subsequent parameter entries, the BACKSPACE
        key may be used to correct a mistyped entry).

        Next, in place of the "Com(n) port = " the following statement will
        appear: "Change UTC offset to local time:".  Enter the offset hours
        to convert local time to Universal World Time.  For example on the
        East Coast of the United States enter the number "5" to convert
        from Eastern Standard Time to UTC.  Or if you were in Stockholm,
        Sweden you would enter "-1" to convert from local time to UTC.  If
        the number "5" is already acceptable, simply press <ENTER>.  (Note:
        for this and any one of the setup configuration parameters, by
        pressing <ENTER>, as opposed to pressing any other keys, will
        simply keep the value displayed as is and advance to the next setup
        step.)  If the time offset of 5 is re-typed, or if a new offset is
        entered, upon doing so, press <ENTER> to advance to the next step
        in the setup routine.          

        The command line will now display "Receiver Latitude =".  Enter
        your location's latitude in degrees and minutes.  This information
        is required to accurately calculate Maximum Useable Frequency (MUF)
        and Lowest Useable Frequency (LUF) for those shortwave broadcasts
        in the database relative to your receiver's location.  Placement of
        characters in this field are extremely important.  You are provided
        2 character positions for degrees and 2 character positions for
        minutes, and 1 for "N" or "S".  If your entry is for example 1
        degree 20 minutes North you would enter "01" or " 1" (space
        followed by the number 1) for degrees, and "30" for minutes, and
        "N" for North.  If you enter a latitude in degrees greater than 90
        or minutes greater than 60, or something other than S for South or
        N for North, you will hear a beep and the cursor will return to the
        beginning of the latitude data entry.  

        After entering the last character of your receiver's latitude (N or
        S), press <ENTER> to have the program automatically advance to the
        next step in the setup routine.

        You are now prompted to enter your receiver's longitude.  As with
        the entry for Latitude, character placement is extremely important. 
        However, unlike, the Latitude entry, there are 3 character
        positions to be entered for degrees rather than 2.   For example,
        60 degrees would be entered as "060" or " 60" (space then 60).  An
        entry of degrees greater than 180, or minutes greater than 60, or
        something other than E for East or W for West will cause a beep and
        will return the cursor to the start of the data field.  After
                                      -14-


        entering "E" or "W" in the last character position, press <ENTER>
        to have the program automatically advance to the the next step in
        the setup routine.
         
        The next series of entries will configure the serial port for your
        TNC.  Upon completing the step in the previous paragraph you will
        be queried to enter the serial COM port number for the TNC.  If you
        do not have a TNC simply enter "0".  If you enter "0", the program
        automatically steps you to the configuration step outlined on the
        top of Page 13 concerning center frequency offsets.  However, if
        you are using a TNC, enter serial port "1" or "2".  If the Drake R8
        is COM port "1" then the TNC should be port "2".  If you attempt to
        enter "1" it will beep.  Similarly, if the Drake is COM port "2"
        you should enter "1" for the TNC.  Upon typing the desired comport
        number advance to the next setup step by pressing <ENTER>.

        The program will now prompt you to enter the TNC's Baud rate. Valid
        Baud rates are 1200, 2400, 4800 and 9600.  After typing the desired
        baud rate press <ENTER>.
     
        Next, the program queries you to enter the number of data bits for
        the TNC COM port.  Valid entries for the number of data bits are 4,
        5, 6, 7, and 8.  Press <ENTER> after typing the desired data bits.

        Next, the program queries you to specify parity for the TNC.
        Acceptable entries are: "S" for space, "M" for mark, "O" for odd,
        "E" for even, and "N" for none.  (Do not enter the quotation marks,
        they are shown here only to highlight the letter to enter).  Press
        <ENTER> after typing the desired parity.

        Next, the program queries you to enter the number of stop bits for
        the TNC.  Valid values are 1, 1.5, and 2.  Press <ENTER> after
        typing the desired stop bits.
     
        The program then queries you for the TNC COM port control
        parameters. If used, these must be entered in the following
        sequence:  ",RS,CSn,DSn,CDn,LF,PE" where n is the number of
        milliseconds to wait (0-65535) for the signal before a device
        timeout error occurs.  Note the "," as the first entry character -
        if control codes are to be used this MUST be typed as the first
        character in the string.  If "RS" is the only control signal
        desired (suppresses RTS - request to send) then simply type: ",RS". 
        If you desire to simply control the device timeout for carrier
        detection for say 100 milliseconds then simply type: ",CD100".  For
        further reference on these control codes, their descriptions may be
        found in your IBM BASIC  or Microsoft GW-BASIC manual.  DX-COMM
        PLUS has been configured for the default state (no values have been
        assigned the control parameters).    

        The next entry requires you to identify whether you want only
        active broadcast frequencies to be displayed on initial program
        startup, or "inactive" or "both".  A description of the terms
                                      -15-


        "active", "inactive", or "both" is provided on page 14 of this
        manual under the heading, "LISTING SHORTWAVE/UTILITY STATIONS". 
        One can type an "A" for active or "I" for inactive or "B" for both. 
        For now, however, I suggest typing "A".  Upon pressing any of these
        keys, the program will advance to the next step in the setup
        routine. 
     
        Next the program requests that you identify a frequency offset in
        khz for RTTY broadcasts.  The Drake frequency display shows carrier
        frequency, but if you tune in an RTTY station to exactly the
        carrier frequency you'll have to detune the Drake by approximately
        2.250 khz or more.  This feature allows DX-COMM PLUS to display the
        center frequency plus the offset when the F9 key is toggled.  For
        now I suggest using 2.25 Khz until your own experience indicates
        otherwise.  Upon typing in the desired offset, press <ENTER>.

        In a similar manner to that of the offset for RTTY, the user is
        requested to enter a CW frequency offset which again allows DX-COMM
        PLUS to display the center frequency plus the offset when the F9
        key is toggled.  Again, until you gain experience with the program,
        it is suggested that you stay with .85 Khz as the CW offset.  Upon
        typing in the desire CW offset, press <ENTER>.

        Now the program queries you to enter information pertaining to the
        North and South Polar Auroral regions.  These are the regions as
        defined by great circle bearings from the receiver's location over
        the North or South Polar regions (latitudes 60 degrees South or
        North) that high frequency signals would be expected to experience
        what is known as Polar Cap Absorption (PCA) during periods of
        intense solar activity.  For example, for a receiver in Summit, New
        Jersey hf transmissions over the North Pole bounded by the region
        of Great Circle Bearings between 310 degrees and 50 degrees have a
        high probability of being affected by PCA - said another way, a
        heading of +/-50 degrees on either side of the North Pole would be
        expected to be subject to PCA.  The number "50" then is entered as
        the North Pole Auroral Region.  Upon typing "50" press <ENTER>.

        Similarly, for the same receiver in Summit, New Jersey
        transmissions over the South pole bounded by Great Circle Bearings
        between 150 degrees and 210 degrees would be expected to be
        affected by PCA -- or +/- 30 degrees of heading either side of the
        South Pole.  Therefore "30" is typed into DX-COMM PLUS as the South
        Polar Auroral Region, and <ENTER> is pressed to advance to the next
        step in the setup routine.

        The next step is enter into the program's configuration file the
        number of seconds of delay for each frequency scanned.  The program
        allows the user to tag certain frequencies in the database and scan
        those frequencies and to pause for "x" amount of seconds before
        going to the next frequency.  The default value is 20 seconds. 
        Press <ENTER> after typing in the desired scan delay.

                                      -16-


        The final step in the setup routine is to enter the Database
        Default String.  The first 8 characters of this string corresponds
        to the default control parameters you want to assign to each new
        database record created.  These first eight characters determine
        the Drake R8's VFO, antenna, gain, bandwidth, mode, etc.   The last
        2 characters of this string correspond to the default record type
        to be created: sa  - shortwave active; ua - utility active.  For
        now leave the default string as " 00 682<8sa". (For more
        information on the meaning of the first 8 characters of this string
        refer to page 22 of the Drake R8 owner's manual.  For information
        on the remaining 2 characters, refer to the next section of this
        manual entitled "LISTING SHORTWAVE/UTILITY STATIONS".)  To accept
        the default string simply press <ENTER>.  

        The program then asks whether you wish to revise any of the
        configuration parameters entered.  If you respond with "Y" the
        program will simply go back to the first step in the setup routine
        and display "Com(N) port =".  If on the other hand you have entered
        everything correctly, simply press <ENTER>.

        This then completes DX-COMM PLUS's configuration.  The parameters
        entered will remain stored in the file COM.DAT and TRSCOM.DAT for
        retrieval each time the program is restarted.  

        If for any reason in the future you need to change a configuration
        parameter, press "S" followed by "E" when operating within the
        "Database Display Screen".  You may then quickly go to the
        parameter you seek to modify by simply pressing <Enter> at those
        parameters that are to remain unchanged. 
     
        For example, suppose you want to modify "Receiver Longitude =". 
        First press the "S" followed by "E".  Next, when the COM(n) port =
        1" is displayed, simply press <ENTER> to keep the COM port to the
        number assigned.  Likewise, do the same for the UTC offset value
        and receiver latitude value displayed.  Finally, when the command
        line "Receiver Longitude =" is displayed, simply type in the
        correct longitude desired.  For the subsequent data entry
        parameters of the TNC COM port, North and South Polar Auroral
        regions, and Scan Delay, etc. simply press <Enter> to step through
        each of the configuration parameters and to exit the setup routine.
     
        Now power up the Drake R8 (I'll discuss how you can do this via the
        (C)ommand screen later on).  With the Drake power on, press the "R"
        key - the top portion of the screen of your computer monitor should
        display the same frequency and other parameters as the Drake in a
        similar manner as shown below. 

FREQUENCY  NB    AGC   RF   NOTCH  ANT MODE BAND  VFO SYNCHRO   SCAN   CHANNEL
==============================================================================
xx.xxxxx   x    xxxx  xxx    xxx    x   xx   x.x   x    xxx      xx      xxx
==============================================================================
Enter Command:
                                      -17-


        If it doesn't, first check your equipment and serial port
        connection to make sure you have connected to the appropriate COM
        port.  If this still doesn't work, I would then proceed on the
        assumption that perhaps the wrong COM port number for the Drake had
        been entered in previous procedure.  Repeat the program
        configuration/setup procedure described in the previous paragraphs.
        If you still have problems proceed to "Appendix E:
        TROUBLESHOOTING". 
        
        Now with the program configuration complete, a word of CAUTION. 
        NEVER TURN YOUR COMPUTER OFF WITHOUT FIRST EXITING DX-COMM PLUS. 
        Failure to do so could result in lost data or damage to existing
        data files.  Make it a practice to back up your data files upon
        exiting the program.
     
        LISTING SHORTWAVE/UTILITY STATIONS 

        The database is designed to identify stations by what are termed
        "shortwave", "utility", or "special".  "Utility" and "special"
        stations may for all practical purposes be one and the same, except
        I've made a distinction here to the allow the user to log
        frequencies that are not necessarily tied to a given time of day. 
        Examples of what I term "special" loggings are the time signal
        stations WWV and CHU which broadcast 24 hours a day.  Another
        example would be WLO's maritime Sitor and CW broadcasts, or ham
        packet frequencies.
     
        Concerning "shortwave" and "utility" broadcasts these are
        subdivided into the categories of "active" and "inactive".  Active,
        in the context of the "as is" database that came with DX-COMM PLUS,
        means those stations recently heard just prior to release of DX-
        COMM PLUS (Jan. 1993) or likely to be heard as evidenced by recent
        loggings by others.  Inactive means those stations not yet heard or
        possibly were at one time logged but may have since shifted
        frequency (e.g. change from summer to winter frequency schedule). 
        Concerning Utility stations, there are many RTTY press services,
        and FAX services which only transmit at a give time of day.  A
        great reference for such frequencies is Tom Harrington's "World
        Press Services Frequencies" - Fifth Edition available from
        Universal Electronics, Inc. (614) 866-4605.  Another valuable
        reference to have on hand is Ferrell's "Confidential Frequency
        List" published by Gilfer Shortwave, 1-800-445-3371. 
     
        When DX-COMM PLUS is first started, the "Database Display" screen
        lists just the shortwave active stations.  (Note: You can change
        this startup mode to display both the active and inactive
        broadcasts by using the SETUP command and making the appropriate
        program configuration change.)  To list the utility active stations
        press "U" followed by "A" in either upper or lower case. To display
        shortwave active stations press "S" followed by "A". Likewise, to
        display inactive stations press "S" followed by "I" for shortwave
                                      -18-


        stations and "U" followed by "I" for utility.  One can also display
        both active and inactive stations by pressing "S" or "U" followed
        by "B". Similarly, to display all the frequencies logged as
        "special" press "S" followed by "P" in either upper or lowercase. 

        UPLOADING DATABASE FREQUENCIES TO THE 
        DRAKE R8

        The first step in uploading a record to the Drake R8 is to
        determine which VFO you want the to use.  If you want to upload the
        record to VFO A and you were using up until now VFO B, simply press
        Function 8 (F8) key.  From this point then there are two simple
        methods to upload information from the database directly to the
        Drake R8 receiver. 
               
        The most direct method is to align the "red" highlight bar over the
        record you desire to load.  To move the Highlight Bar use either he
        "]" or "[" keys to move the bar down or up.  It should be noted
        that when the red highlight bar is at the bottom of the Database
        Display, repeated pressing of the key "]" will advance the display
        one record at a time with the only restraint being the number of
        records available for that hour.  When the bar is over the desired
        record simply press the <ENTER> key and the record will be loaded
        into the Drake R8.  During the upload operation, the "Enter
        Command:" line will be replaced with "Loading INDEX# XXX  REC#
        XXX".  This information denotes the Index or  crossreferencing
        number to that of the highlighted record in the display to the
        actual record number in the file SWDB.DAT.   

        The second way is to simply press the "L" key followed by entering
        the Index number of the broadcast desired.  To find the Index
        number, simply look at the lower left side of the screen for the
        Index number (INDEX#) representing the station broadcast desired,
        and type this number, and press enter.  The Drake R8 should then
        proceed to display the frequency of the station.  The other
        parameters on the radio will change in a matter of a second or two. 
        At the end of the Drake upload operation, the program automatically
        downloads information off of the Drake's RS232 port and displays
        this information to the upper portion of your computer monitor's
        screen.  (NOTE: if for any reason the computer display does not
        match the Drake's panel display press the "R" key - this could
        happen if for instance you touched the Drake's tuning knob or
        entered a frequency directly using the Drake's numeric keypad). 
     
        Your Computer's monitor display lists up to 8 lines of station
        database information.  You can scroll to obtain more lines of
        information (if the database for the UTC time in question contains
        such) by pressing "]" or "[", or by pressing the keyboard's up/down
        arrow keys (make sure NumLock is off!) or by pressing the "O" or
        "P" keys depending on which direction you want to scroll. The
                                      -19-


        scrolled list provides by default a total of 1 hour look ahead from
        the current "on the hour" UTC time.  This time is displayed in the
        upper right hand corner of your monitor's screen.  I'll describe
        shortly how the program may be reset to give more than a one hour
        look ahead.
     
        In addition to scrolling one line at a time, you can go to the end
        of the record list for that hour by pressing the "END" key or "Z"
        on the keyboard, or back to the beginning by pressing the "HOME"
        key or "H" on the keyboard.  You can also pagedown and pageup 8
        records at a time by using your computer's "PGUP" or "PGDN" keys or
        "J" and "K" on the keyboard.

        If you find the time it takes to load a record to be too long, you
        can speed the uploading of records to the Drake by first pressing
        the ^Y (Ctrl Y) keys.  This locks open the PC serial communications
        port with the Drake R8.  The disadvantage of this feature is that
        while the comport is open, direct user operation of the Drake's
        tuning knob or keypad is also locked out.  However, this feature
        can be toggled off by simply pressing ^Y when so desired.

        DISPLAYING UTILITY BROADCASTS WITH CENTER
        FREQUENCY OFFSET

        A frequently cited shortcoming for the Drake R8 concerns its
        display of RTTY and CW utility stations.  As stated by the 1992
        World Radio TV Handbook. "If you tune in a Morse code station to
        exactly the frequency of the carrier wave you'll hear nothing at
        all.  So you have to detune the signal around 850 hz lower in order
        to get a tone.... You need to keep this in mind when referring to
        frequency lists....The same is true of RTTY signals.  Depending on
        the type of decoder in use, you'll have to tune the set some 1375
        hz higher than the center frequency to be able to read the text
        being sent over the air......If you're a utility enthusiast, you'll
        have to remember to detune the set by 1375 hz from the frequencies
        listed in publications by Klingenfuss, Grove, or Gilfer
        Associates."

        To make up for this shortcoming, DX-COMM PLUS has been equipped to
        provide center frequency offsets for RTTY and CW stations
        automatically.  The user can activate and deactivate this feature
        by pressing the F9 key.  When activated the F9 descriptor at the
        bottom of the Database Display Screen turns from a red lettering on
        a blue background to black lettering on a white background.  In
        this manner when RTTY AND CW frequencies are loaded from the
        utility database in DX-COMM PLUS they will display the utility's
        center frequency of the utility broadcast and the Drake will
        display the center frequency plus the RTTY or CW offset depending
        on the mode of operation selected. 
                                      -20-


        My personal experience using the Drake R8 is that the typical
        center frequency offset of most commercial RTTY stations is
        approximately  2.25 khz and for CW stations to be around .850 khz.

        DISPLAYING DATABASE INFORMATION FOR OTHER
        TIME PERIODS

        By pressing the "T" key, the database display may be manipulated to
        provide data from a different UTC period than the one presently
        shown.  Press the "T" key.  "Enter New Time as xx00 or (T):" will
        be displayed.
     
        As an example, if database records corresponding to 0100 is what
        you desire, type "0100" followed by <ENTER>.           
     
        You may also configure DX-COMM PLUS to display more than one hour
        of data from the database.  For example suppose you are interested
        in displaying the shortwave broadcasts for 0100 hour to 0300. 
        First press the "T" key as described above and type in 0100
        followed by <ENTER>.  Next press the "T" key again.  The command
        line will display "Enter New Time as xx00 or (T)".  Press the "T"
        key followed by <ENTER> - now the following will be displayed on
        the command line, "Enter No. of hours to display (1-3):".  In the
        example described press 3 for a three hour look-ahead (0100 to
        0200, 0200 to 0300, 0300 to 0400) followed by <ENTER>. 

        DECREMENTING/INCREMENTING THE DRAKE
        FREQUENCY 

        Within the "Database Display" screen, the current display if you've
        been sequencing through these instructions, when you press the left
        or right arrow key on the computer's keyboard the Drake frequency
        will be either decremented or incremented.  The amount of
        decrement/increment is set by pressing the Function F2 key.  The
        "Enter Command:" line in the middle of the monitor screen will be
        replaced with: "Enter frequency increment in Khz:".  If you want to
        decrement/increment the frequency by 5 Khz (usually most
        international shortwave stations are located on 5 Khz intervals
        ...i.e xx.xx0 or xx.xx5 Mhz) simply enter the number 5.  This is
        extremely useful in searching the bands by first working your way
        up/down from a given frequency and then using the (A)dd record
        feature to download and add the broadcast into the database.  

        ACCESSING THE COMMAND SCREEN 
    
        By pressing the "C" key, the lower portion of the display on your
        computer's monitor will be replaced with a list of direct commands
        that may be uploaded to the Drake R8 as shown below.   
                                      -21-


                  DX-COMM PLUS: COMMUNICATIONS RECEIVER
         TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB   AGC  RF   NOTCH  ANT  MODE  BAND   VFO  SYNCHRO  SCAN  CHANNEL
------------------------------------------------------------------------------
15.43000  N   FAST   OFF   OFF    1    AM    6.0    A     OFF     NO     15
------------------------------------------------------------------------------
Enter Command:
                              COMMANDS
------------------------------------------------------------------------------
Set frequency: Fxxxxxxx        Mode select:  AM,  FM,  CW,  RTTY,  LSB,  USB
AGC set:       AF AS AO
ANT select:    A1 A2 AC        Bandwidth select:  0.5,  1.8,  2.3,  4.0,  6.0
Synchro set:   SO SF
Notch set:     NO NF           Memory mode:            C
VFO select:    VA VB           Memory channel select:  Cx (x=0 to 99)
RF select:     G+ G- G0        Program memory channel: PR then X (x=0 to 99)
Tune UP/Down:  U or D          Scan start/stop:        Sc
Step chg:      ST (scrolls)    Scan Select:            Sx (x=1-3,4-5)
Noise blanker: BW BN BF
Timer relay:   TO TF           Cont. Update display:   (UP)date (return to quit)

(S)wdb Menu          and           (L)ist          ^Y=Lock      (Q)uit Program
                                                   F8=VFO A

        Most of these commands are documented and described in the Drake R8
        Owner's Manual that came with the radio.  For example, typing "PO"
        followed by pressing <ENTER> turns the Drake receiver on, and
        typing "PF" followed by pressing <ENTER> turns the receiver off. 
        (Note: Entry of these commands is not case sensitive.)  DX-COMM
        PLUS also provides increased user friendliness by allowing one to
        change the receiver's mode and bandwidth by directly typing, for
        example, "AM" as opposed to using the Drake code "M6", and "1.8"
        for 1.8 Khz bandwidth rather than the Drake code "W1".  

        The "Command Screen" provides an almost hands-off operation of the
        receiver by simply using the computer keyboard (with the exception
        of the analog controls of passband offset, notch filter adjustment,
        tone, squelch, or volume adjustment).  One can move rapidly from
        the "Database Display" screen to the "Command Screen" to adjust
        bandwidth, synchronous detector, mode, antenna, to make alternate
        settings to that which was uploaded from the "Database Display", or
        simply to prepare the Drake's display for downloading to create or
        edit a record. It should be noted that when the F9 frequency offset
        feature for RTTY and CW is activated that frequencies entered via
        the Command Screen will display on your computer monitor as
        entered, but the offset will be added and inputted into the Drake
        as the selected frequency.

        To return to the "Database Display" from the "Command Screen" press
        the "L" key, and then press the <ENTER> key.  If instead you desire
        to quit the program simply press "Q" and <ENTER>.  If instead you
        want To proceed to the "Database Menu" screen simply press "S" and
        <ENTER>.  However, for now, return to the "Database Display" menu
        by pressing the "L" key followed by <ENTER>.  
                                      -22-


        Other special features of the Command Screen are: 

        -   The left/right arrow keys frequency decrement/increment feature
            found in the Database Display Screen is also available within the
            Command Screen.  One can also increment or decrement up/down in
            frequency in finer increments by pressing "U" or "D" and "ENTER". 
            (Note: The U/D feature is a programmed  feature within the Drake
            R8 itself).  For every "U" or "D" key pressed the frequency will
            increment up or down .01 khz or .1 khz depending upon the
            frequency step you've selected (refer to your Drake manual for a
            description of the Step function) or whether the VHF Converter is
            invoked for Frequencies greater than 108 mHz .  You can enter a
            string of U's as opposed to just a single U at a time.  For
            example, if I wanted to increment upward by .1 khz using a step
            function of .01 khz then I would type "UUUUUUUUUU" and <ENTER>. 
          
        -   By typing "UP" followed by <ENTER> at the Enter Command line the
            program will every few seconds retrieve the radio's frequency and
            other parameter settings (i.e. Bandwidth, etc.).  This allows the
            program's display to automatically update itself as the user
            manually operates the Drake R8 tuning knob or frequency keypad. 
            To return back to normal DX-COMM PLUS operation press <ENTER>.  
        
                        
        DATABASE DISPLAY SCREEN - FIVE WAYS TO
        DISPLAY RECORDS: TSF, TFS, FST, SFT, & STF                                      

        From within the "Database Display" screen one can change the manner
        in which Database records are listed.  

        When first starting the program, the program retrieves an index
        contained in the file INDX.DAT and retrieves certain Index pointers
        in the file FLAG.DAT for the UTC time in question.  The INDX.DAT
        file contains a translation table to access the main file SWDB.DAT.
        Depending upon the last sort of INDX.DAT the database will either
        be listed in ascending order by time, station, and frequency (TSF)
        or in ascending order by time, frequency, station (TFS) or in
        ascending order by frequency, station, and time of broadcast (FST)
        or in ascending order by station, frequency, and time of broadcast
        (SFT), or in ascending order by station, time, frequency (STF).  

        If the database has been previously sorted in ascending time,
        station, frequency order (TSF) the "F3" on the screen will be
        highlighted as black letters on a white background followed by
        "=TSF" (this is the manner the data is displayed when you first
        load DX-COMM PLUS).  In this way,  a station that is broadcasting
        on multiple frequencies for a given hour will have all its
        frequencies consecutively listed in ascending order.  The next
        station will then be in alphabetically ascending order to that of
        the prior station, and so on.  An example of this would be:       
                                      -23-



                TIME          STATION             FREQUENCY                
            0000 - 0100   BBC LONDON               5.97500                 
            0000 - 0100   BBC LONDON               6.17500                 
            0000 - 0100   BBC LONDON               9.91500                 
            0000 - 0100   CFCX MONTREAL            6.00500                 
            0000 - 0030   RADIO PRAGUE             7.34500                 
            0000 - 0100   SPANISH FOREIGN RADIO    9.53000               
    
        By pressing the Function F3 key until the "F3" lettering on the
        display turns to red letters on a blue background followed by
        "=TFS".  Upon re-sorting the database, the same information will be
        displayed in ascending time, frequency, station order (TFS) as
        shown below. I've found this feature to be extremely useful when
        using the left/right arrow key to search a given band for stations
        not previously logged. 
  
                TIME           STATION             FREQUENCY                
            0000 - 0100   BBC LONDON               5.97500                 
            0000 - 0100   CFCX MONTREAL            6.00500                 
            0000 - 0100   BBC LONDON               6.17500                 
            0000 - 0030   RADIO PRAGUE             7.34500                 
            0000 - 0100   SPANISH FOREIGN RADIO    9.53000                 
            0000 - 0100   BBC LONDON               9.91500

        To sort the database in the manner described, leave the "Display
        Database" screen by pressing the "Q" key.  This will access the
        "Database Menu" screen as shown below.
  
                  DX-COMM PLUS: COMMUNICATIONS RECEIVER
         TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB   AGC  RF   NOTCH  ANT  MODE  BAND   VFO  SYNCHRO  SCAN  CHANNEL
-------------------------------------------------------------------------------
15.43000  N   FAST   OFF   OFF    1    AM    6.0    A     OFF     NO     15
-------------------------------------------------------------------------------
Enter Command:

                                  DATABASE MENU
-------------------------------------------------------------------------------
              (A)dd Records
              (S)ort Records
              (I)mport TRS Database
              (L)ist Records - Database Display Screen
              (F)ind Record/Edit/Delete
              (P)rint Records
              (Q)uit Database Menu

        Once this menu is displayed press the "S" key to create, sort,and
        reorder the database.  (Note:  When no new records are added or no 
        records are to be deleted, the database itself is not reordered. 
        Instead a new index and new flags are saved to your default
        directory thereby substantially reducing the overall time taken to
        sort the database.)  Once the sorting is complete the "Enter
        Command:" will re-appear in the middle of the monitor's screen. 
                                      -24-


        Press "L" to return to the "Database Display" screen. The records
        should be listed in time, frequency, station (TFS) order.  

        A third way you can display records is by Frequency, Station, and
        Time (FST).  To display information as "FST" toggle the function F3
        key such that the "F3" lettering on the screen becomes black with
        a brown background followed by "=FST".  Repeat the sorting
        procedure described, then return to the Database Display Screen.
        Records will display in a similar manner to that shown below:

                     TIME         STATION            FREQUENCY                  
                    SPECIAL     NAVTEX                  .51800                   
                  0700 - 0800   GHANA BC CORP          3.36600
                  0800 - 0900   GHANA BC CORP          3.36600
                  0900 - 1000   GHANA BC CORP          3.36600
                    SPECIAL     WWV                    5.00000
                  2330 - 0000   RADIO PRAGUE           5.93000
                  0000 - 0100   CFCX MONTREAL          6.00500                   
                  0000 - 0100   BBC LONDON             6.17500                   
                  0100 - 0200   BBC LONDON             6.17500
                  0000 - 0030   RADIO PRAGUE           7.34500                   
                  0000 - 0100   SPANISH FOREIGN RADIO  9.53000                   
                  0000 - 0100   BBC LONDON             9.91500

        Also now note that the Display Screen is slightly different.  In
        the FST display mode MUF-LUF will not be displayed.  Instead the
        first 15 characters of the "Remarks" field of each record will now
        be displayed.  Likewise, the list of commands within the Display
        Screen is more condensed than that in the other two display modes. 

                  DX-COMM PLUS: COMMUNICATIONS RECEIVER               2:15:10
         TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB   AGC  RF   NOTCH  ANT  MODE  BAND   VFO  SYNCHRO  SCAN  CHANNEL
-------------------------------------------------------------------------------
 9.53000  N   FAST PREAMP  OFF    1    AM    6.0    B     OFF     NO     02
-------------------------------------------------------------------------------
Enter Command:
(C)ommands   S(W)itch  (A)dd   T(N)C   ^Z= SWDB Chg   ^S= Scan   ^P= Program
    and      @ and !   (E)dit            (M)emory     ^U= Untag  ^Q= Fast Quit

INDEX#  TIME    TYPE     STATION                FREQUENCY  DAYS    S   REMARKS
-------------------------------------------------------------------------------
 1     SPECIAL  s-p  CHC                         0.43505  MTWHFAS  A
 2     SPECIAL  s-p  NAVTEX                      0.51800  MTWHFAS  A
 3     SPECIAL  s-p  WWV                         2.50000  MTWHFAS  A
 4    0300-0400 s-a  RADIO ORANJE, S.AFRICA      3.23000  MTWHFAS  A
 5    0400-0500 s-a  RADIO ORANJE, S.AFRICA      3.23000  MTWHFAS  A
 6    0500-0505 s-a  RADIO ORANJE, S.AFRICA      3.23000  MTWHFAS  A
 7    1620-1700 s-a  RADIO ORANJE, S.AFRICA      3.23000  MTWHFAS  A
 8    1700-1800 s-a  RADIO ORANJE, S.AFRICA      3.23000  MTWHFAS  A

^R=Review       Glo(B)al          F3 = FST SWDB      F10= DOS    (X)tra  ^V=ACR
(G)raph      F9 = Freq. Offset    ^[= Move SWDB      F8=VFO B    ^T=Tag  (Q)uit

                                      -25-


        For example, unlike the TSF or TFS mode, the commands associated
        with selecting specific UTC time periods, solar flux, or selection
        of active or inactive broadcasts are not available.  However, other
        commands are provided: the commands "@" and "!" are provided which
        allow the user to step thru the display in increments or decrements
        of 100 records at a time (if that number of additional records is
        available).  Also by pressing "W" the heading "  LONG.      LAT. 
        " will be displayed in place of "S   DAYS    REMARKS".  Under this
        heading will be the longitude and latitude fields of each record. 
    
        The fourth way records may be displayed is by Station, Frequency,
        and Time (SFT).  To display information as "SFT" toggle the
        function F3 key such that the "F3" lettering on the screen becomes
        white with a black background followed by "=SFT".  Repeat the
        sorting procedure described previously.  Then return to the
        Database Display Screen. As in the FST mode, MUF-LUF are not
        displayed and only those Database Display Screen commands available
        are shown.  An illustration of the expected record display is shown
        below:
        
                        TIME           STATION            FREQUENCY               
                     0000 - 0100   BBC LONDON               6.17500               
                     2300 - 0000   BBC LONDON               6.17500
                     2200 - 2300   BBC LONDON               7.32500
                     0000 - 0100   BBC LONDON               9.91500                 
                     0000 - 0100   CFCX MONTREAL            6.00500                 
                     0700 - 0800   GHANA BC CORP            3.36600
                       SPECIAL     WWV                      5.00000

        The final mode of displaying database information is by STF. Toggle
        the function F3 key such that the "F3" lettering on the screen
        becomes blue with a light blue background followed by "=STF".
        Again, please note, that as with the FST and SFT modes, MUF-LUF are
        not displayed.  An illustration of the STF mode using just the
        "BBC" frequencies shown above, would be re-ordered as such.
    
                        TIME           STATION            FREQUENCY                
                     0000 - 0100   BBC LONDON               6.17500
                     0000 - 0100   BBC LONDON               9.91500
                     2200 - 2300   BBC LONDON               7.32500
                     2300 - 0000   BBC LONDON               6.17500
   

        MAXIMUM USEABLE AND LOWEST USEABLE
        FREQUENCY CALCULATION
     
        DX-COMM PLUS provides the capability of calculating the maximum
        useable frequency (MUF) and lowest useable frequency (LUF) for each
        of the stations displayed.  The MUF algorithms written into the
        program were primarily based from the following:
                                      -26-


        -   "MINIMUF: A Simplified MUF-Prediction Program for
            Microcomputers", written by Robert B. Rose, QST December 1982
            (pp. 36-38). 
          
        -   "MINIMUF for the Ham and the IBM Personal Computer", written by
            John E. Anderson, QEX November 1983 (pp. 7-14).

        An excellent information source to gain a better understanding of
        propagation and its affects on shortwave transmissions may be found
        in "Shortwave Radio Listening with the Experts" edited by Gerry L.
        Dexter.  Other excellent sources are the "The Shortwave Propagation
        Handbook" by George Jacobs and Theodore J. Cohen as well as the
        "ARRL Handbook" and the "ARRL Antenna Handbook". 

        MUF and LUF are calculated using UTC time, Solar Flux level as
        obtained at 18 minutes after the hour on WWV, and the shortwave
        transmitter's longitude and latitude as well your Drake receiver's
        longitude and latitude.  If you've been following the sequence of
        these instructions, the latter is what you entered upon pressing
        the "S" and "E" keys.  About 60% of the database records provided
        with DX-COMM PLUS contain longitude and latitude information.  The
        remaining records can easily be edited to add the information as
        desired. (Note, that many international broadcasters are using
        relay transmitters in many parts of the world to reach desired
        audiences.  If a relay is being used, it is that relay's longitude
        and latitude that should be entered). 
     
        When you first start DX-COMM PLUS, MUF and LUF are not displayed. 
        If you want to display this information press the "F" key to enter
        the Solar Flux value.  The program will not accept values greater
        than 250 or less than 60 with the exception that "0" may be entered
        (this feature will be explained shortly).  Upon entering a value
        between 60 and 250 the program will display the average MUF and LUF
        values for the start and end of that hour for those records which
        contain longitude and latitude information.  

        In addition, for those records where the MUF and LUF are
        calculated, under the "S" or "SEASON" column of the database
        display you will note that the "S, W or A" has either a purple,
        brown, or green background.  You should also note that for a few of
        the records the letter "S, W, or A" is blinking.  

        o   When the background is Purple this means that the frequency for
            that particular station's broadcast is within the frequency
            range bounded by the MUF-LUF.  

        o   If the background is brown and the foreground yellow, the
            broadcast frequency is within + or - 2 mHz of the MUF limit. 
            (My personal experience is that broadcast within this range are
            usually the strongest when compared to alternate frequencies
            below this band or zone from the same transmitter location).
                                      -27-


        o   When the background is green the broadcast frequency is outside
            the range of the region bounded by MUF and LUF.
                                                                  
        o   The letter "S,W, or A" is blinking this means that the
            propagation path takes the signal over the north or south polar 
            region within the areas where solar disturbance have a high     
            likelihood of causing Polar Cap Absorption or Polar Blackout.

        Because of the calculations involved, to initially display records
        with projected MUF-LUF values takes slightly longer than if no MUF-
        LUF values were to be calculated.  Subsequent redisplay of the
        particular hour's records, however, does not result in this delay
        since the calculation results are stored in the computer's RAM.
             
        If you find the few seconds that it takes to perform the MUF-LUF
        calculations inconvenient, this feature can be turned OFF by simply
        entering "0" for the Solar Flux value.  
               
        24 HOUR PLOTS OF PREDICTED HIGH FREQUENCY
        PROPAGATION

        By pressing the "G" key while within the "Database Display" screen,
        DX-COMM PLUS transfers control over to the program MUFGRAPH.EXE. 
        A "PROPAGATION MENU" with 16 regions of the world is displayed. 

                  DX-COMM PLUS: COMMUNICATIONS RECEIVER
         TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB   AGC  RF   NOTCH  ANT  MODE  BAND   VFO  SYNCHRO  SCAN  CHANNEL
-------------------------------------------------------------------------------
15.43000  N   FAST   OFF   OFF    1    AM    6.0    A     OFF     NO     15
-------------------------------------------------------------------------------
Enter Command:



                                 PROPAGATION MENU
-------------------------------------------------------------------------------
       REGION           LONG      LAT          REGION           LONG      LAT
N. AMERICA (Kansas)    94 38'W  39 06'N N.AF. (Tunis)          10 10'E  36 48'N
C. AMERICA (Belize)    88 45'W  17 00'N C. AFRICA (Zaire)      24 00'E  02 00'S
S. AMERICA (Brasila)   47 55'W  15 47'S S.AF.(Johannesburg)    28 03'E  26 12'S
SCAND. (Stockholm)     18 00'E  59 16'N MID. EAST (Kuwait)     47 45'E  29 30'N
N. EUROPE (Warsaw)     21 00'E  52 10'N INDIA (New Delhi)      77 15'E  28 19'N
S. EUROPE (Athens)     36 44'E  37 59'N SE ASIA (Singapore)   103 51'E  01 17'N
W. EUROPE (London)     00 07'W  51 30'N FAR EAST (Tokyo)      139 46'E  35 42'N
E. EUROPE (Moscow)     37 35'E  55 45'N AUSTRALIA (Melbourne) 145 00'E  37 50'S
<ENTER>          ]/[ = Dwn/Up          (S)tation           (D)ate       (F)lux#
(P)lot           (T)ransmitter         (R)eceiver          (L)ong       (Q)uit



        If a Solar Flux value was not previously entered, or if you would
        like to experiment to determine the affect of different solar flux
                                      -28-


        levels, simply press "F".  In the middle of the screen, directly
        below the DRAKE readout, "Solar Flux# =" will be displayed.  If a
        solar flux level was previously entered it also will be displayed. 
        If not, or if you would like to temporarily change the value,
        simply type the appropriate solar flux level remembering that the
        value must be between 60 to 250.

        The MUFGRAPH program uses the PC's internal clock as a default for
        determining the day and month in the calculations.  The date may be
        temporarily changed by pressing the "D" key and simply entering a
        new date as MM-DD.  It is important to note that for month and day,
        2 digits for each must be entered (i.e. January is "01").
     
        To select a region of the world move the red highlight bar by
        pressing the "]" or "[" keys.  Upon moving the highlight bar to the
        desired region, simply press <ENTER>.  The screen will clear and a
        320x200 graphics display of MUF and LUF over the short path over 24
        hours for the selected month and day of the year will be
        calculated.  The heavy solid line plotted represents the calculated
        MUF value, the dashed line is a MUF adjustment from that which is
        calculated based on my own personal observation of MUF maximum 
        relative to that which is calculated, and the light solid line
        plotted represents the LUF value.  In addition, the number of F-
        layer hops taken by the radio signal between the transmitter
        location and the receiver will be displayed, along with the
        calculated number of miles between the transmitter and receiver. 
        The beam heading from your receiver to the Shortwave Broadcaster is
        also calculated.  To return to the "Propagation Menu" simply press
        the "Esc" key.

        If you would like to determine the propagation conditions for the
        long path to the same station press the "L" key.  (Note: the letter
        "L" of (L)ong is highlighted by a white background.)  This toggles
        the program to calculate the longpath and remains in that mode
        until retoggled by pressing the "L" key once again.  Upon selecting
        the longpath, press the <ENTER> key and a 320x200 graphics display
        of MUF and LUF for that station will be provided.  Note that the
        upper left corner of the display will indicate "LP" denoting
        Longpath. 

        In addition to the regions provided, the user may directly type in
        a transmitter location.  To do this press the "T" key and enter the
        latitude and longitude of the transmitter.  Enter the degrees and
        minutes in each of the specified fields in the same manner as you
        did in the setup routine.  Upon the last character entry in the
        latitude field and the longitude field the program will
        automatically return to the "Enter Command" line. Now press the "S"
        key to enter a description of the transmitter station.  This
        description can not exceed more than 25 characters in length.  Now
        press the "P" key for (P)lot.  The middle of the computer screen
        will display the name of the station as you entered it, and the
        transmitter longitude and latitude, as well as a default longitude
                                      -29-


        and latitude from the original Setup configuration file of DX-COMM
        PLUS. 
     
        If the station header is correct, and the transmitter and receiver
        locations are as you desire, press "Y" for yes to calculate MUF-LUF
        for these world coordinates.  If the information as to header and
        location is not correct press "N" or simply press <ENTER>, followed
        by "T", "R" or "S" for whatever information you desire to change.

        Another method for entering a region not identified within the
        MUFGRAPH menu is to import it from the Database Display screen. 
        This procedure will be later described in the section "FIELD
        CAPTURE, GLOBAL EDIT, AND FIELD IMPORT FEATURE".
     
        To return to DX-COMM PLUS's "Database Display" menu, simply press
        the "Q" key.
     
        LOGGING NEW STATIONS INTO DX-COMM PLUS's
        DATABASE 

        Let's say you have tuned in a frequency of 15.43000 Mhz for the
        Channel Africa at 1700 UTC.  Let's assume that it isn't in your
        database.  You may add this station to your database from within
        the "Database Display" screen by pressing the "A" key. 
        Immediately, the program listings on lower portion of the display
        will be replaced with the Data Entry Screen as shown below.


                  DX-COMM PLUS: COMMUNICATIONS RECEIVER               17:22:30
         TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB   AGC  RF   NOTCH  ANT  MODE  BAND   VFO  SYNCHRO  SCAN  CHANNEL
------------------------------------------------------------------------------
15.43000  N   FAST   OFF   OFF    1    AM    6.0    A     OFF     NO     15
------------------------------------------------------------------------------
Use DRAKE frequency or IMPORT? (Y/n/I)



                            DATA ENTRY SCREEN
------------------------------------------------------------------------------
Frequency = 15.43000*MHz








F1 = Drake Freq.             Enter = Skip Thru Field            Esc = Return



                                      -30-
        The monitor will now display the Drake's frequency.  The "Enter
        Command:" line will also be replaced with the statement "Use Drake
        Frequency or Import (Y/n/I):".  Assuming that you've proceeded
        through these instructions as I've described, and the Drake was set
        up for the desired antenna selection, mode, bandwidth, notch
        filter, noise blanker, RF gain setting, you can now press "Y". 
        (For the moment ignore the "Import" feature which will be described
        in the "FIELD CAPTURE, GLOBAL EDIT, AND FIELD IMPORT FEATURES"
        section).
     
        Also, while not pertinent to the example being described, but
        relevant for future consideration, if upon initial entry into the
        new record screen, or anytime the statement "Use Drake Frequency or
        Import (Y/n/I)" is displayed and you decide you do not want to
        proceed to enter a new record, you can press the "Esc" key to
        return back to the "Database Display" screen.  You can also Escape
        from the Add Record feature by pressing the "Esc" key once within
        any of the fields, provided the cursor is located in the field's
        1st character position. 

        Proceeding with the example, immediately to the right of the
        frequency field you will be prompted to enter information in the
        Radio Station or "R.  Station =" field.  You are allowed up to 25
        characters.  However, if you were typing CHANNEL AFRICA, which
        contains only 14 characters (including space between the words) you
        may after the last character press the "ENTER" key or "CR" key on
        keyboard.  If you make a mistake in typing you can use the
        "BACKSPACE" key to retype what you want to correct.  Upon correctly
        typing in this information in the R.Station field, press <ENTER>
        which will immediately bring you to the next field, "Start UTC =". 

        In the "Start UTC =" field type the UTC time that the broadcast
        starts.  You should be careful to assure that all four character
        positions of this field are filled (i.e. 1700) with the only
        exception being if this is to be a "special" logging. If it is a
        "special" logging just skip over this field by pressing the "ENTER"
        key.  It should be noted that proper time entry is extremely
        important if the database is to later sort and display properly. 
     
        Upon completing the "Start UTC =" field the "End UTC =" field will
        appear.  Enter the UTC time that the broadcast ends. Note that some
        broadcasters have programs several hours in length. It is
        acceptable to enter an End UTC time beyond the hour that the
        program starts.  DX-COMM PLUS will automatically, upon completion
        of other data fields break the file record into several records for
        each UTC hour that the station is broadcasting.   If the broadcast
        being logged is a "special" logging simply skip over this field by
        pressing "ENTER". 

        The next field is the "Days Operating (MTWHFAS) =" field.  Many
        international shortwave stations do not broadcast in English every
        day of the week.  If the station broadcasts Monday thru Sunday,
                                      -31-


        enter MTWHFAS where "H" represents Thursday and "A" represents
        Saturday.  Data entry in this field, however, is not critical to
        proper sorting or displaying of records. 

        The next field is "Longitude =".  Enter the degrees and minutes of
        the broadcaster's transmitter.  For example, using a World Atlas
        and the World Radio TV Handbook you would determine that Channel
        Africa broadcasts from Meyerton, S. Africa.  By referring to an
        Atlas we find that Meyerton is close to Johannesburg.  The
        longitude for Johannesburg is 28 deg. 03 min. East.  If you had
        attempted to type a value greater than 180 deg., or something
        greater than 60 min., or other than E for east or W for west, the
        computer will beep and return the cursor to the start position of
        this field. 

        The next field is "Latitude =".  Enter the degrees and minutes of
        the broadcaster's transmitter.  Again for the Channel Africa 
        example, this would be 26 degrees 12 minutes South.  If you had
        attempted to enter something greater than 90 degrees,  or something
        greater than 60 minutes, or something other than N for North or S
        for South, the computer would have beeped and returned the cursor
        to the start position of this field.
     
        The next field is "Drake Download String =".  This field will
        automatically display the string that represents the frequency,
        mode, bandwidth, antenna selection, etc. that you've down loaded
        off the Drake in the initial step to this section. (Refer to the
        Drake R8 Owner's Manual for a description of "RA" or the "Report
        All" response which is the principal component of this download
        string).  Simply press the enter key if you are satisfied with the
        mode, bandwidth, and other parameters of operation that you've
        downloaded.  If you are not, refer to the Drake R8 Owner's Manual
        to obtain the appropriate codes for typing in the first 9
        characters of this string (I rarely use this feature since one can
        "Edit" the record after all other fields have been sequenced
        through and then use the F1 key to allow DX-COMM PLUS to download
        the appropriate information directly into the file record - a
        feature that is described later in this manual).  

        Once the above field is either modified or the enter key has been
        pressed, you are prompted to enter the following information
        "(W)inter, (S)ummer, (A)ll =".  Many international broadcasters
        change the frequency used during winter versus summer to take
        advantage of changes in propagation conditions. Enter "W" or "S"
        for winter or summer, or "A" if the broadcaster uses this frequency
        at the same UTC time throughout the year.  It should be noted,
        however, that data entry here is not critical to sorting or
        displaying of records.  

        The next field is "(S)hortwave/(U)tility/(S)pecial =".  You must
        enter either "s" or "u".  If any other letter is entered you will
        hear a warning beep. The program also automatically converts
                                      -32-


        uppercase to lowercase.  Without an "s" or a "u" this record will
        not be properly displayed or printed.        

        The next field is "(A)ctive/(I)nactive/S(p)ecial =".  You must
        enter "a", "i", or "p".  A mis-typed entry will result in a warning
        beep. The program converts all uppercase entries to lowercase. 
        Correct data entry is essential to assure proper display and
        printing of the record.  If you type "p" for this field, upon
        leaving the field, the Start UTC and End UTC fields will
        automatically display "SPEC" and "IAL " respectively.          

        The final record field is "Remarks =". In this field you are 
        allowed 25 characters of information.  I typically use this field
        to identify the transmitter location, or other information about
        the station.  This field is not critical to proper sorting or
        displaying of the record.  At the completion of data entry in the
        "Remarks =" field the lower half of the screen will now appear as
        shown below and the user will be prompted by "Edit (Y/n)?".  


                  DX-COMM PLUS: COMMUNICATIONS RECEIVER               17:22:30
         TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB   AGC  RF   NOTCH  ANT  MODE  BAND   VFO  SYNCHRO  SCAN  CHANNEL
-------------------------------------------------------------------------------
15.43000  N   FAST   OFF   OFF    1    AM    6.0    A     OFF     NO     15
-------------------------------------------------------------------------------
Edit (Y/n)?


                            DATA ENTRY SCREEN
-------------------------------------------------------------------------------
Frequency = 15.43000*MHz               R. Station = CHANNEL AFRICA
Start UTC = 1700                       End UTC = 1800
Days Operating (MTWHFAS) = MTWFHAS
Longitude =  28  03' E                 Latitude =  26  12' S
Drake Download String =  15 602<8  15.43000*MHz
(W)inter, (S)ummer, (A)ll = A          (S)hortwave/(U)tility/(S)pecial = s
(A)ctive/(I)nactive/S(p)ecial = a      Remarks = VIA JOHANNESBURG,S.AFRICA


F1 = Drake Freq.             Enter = Skip Thru Field            Esc = Return

        If you find that you have mistyped information in any of the
        fields, you have an opportunity to go back and edit the field(s)
        containing the error(s) by pressing "Y" and <ENTER>.  I will
        describe the edit mode in the next section, but for now assume that
        data entry was correct. Press "N"  followed by pressing the <ENTER>
        key, or simply press the <ENTER> key.  The command line in the
        middle of the monitor's screen will then ask if you want to enter
        another record.

        At this point if one pressed "Y" one can then enter new information
        for a new database record.  Initially, upon displaying each field
        the program will default to the prior information entered for the
                                      -33-


        previous record.  In this way the user has the option of just
        pressing <ENTER> to accept the default condition or retyping the
        particular field.  This feature is extremely useful for example
        when a broadcaster is transmitting on more than one frequency at a
        given time of day.

        However, for the particular example, type "N" when prompted whether
        there are additional records to enter, or simply press <ENTER>. 
        The program will then redisplay the list of frequencies for the
        hour that was being reviewed by the user prior to performing data
        entry. The new record added, if it is inclusive of the UTC hour
        being displayed, will be the last record displayed for that hour. 
        To properly place the record in the appropriate sequence to that of
        other records in the database, you must re-sort the database.  To
        do this go to the "Database Menu" screen and then press "S". 
     
        Some comprehensive sources of shortwave broadcast frequency
        listings include: "Monitoring Times", "Passport to the World Band
        Radio", "World Radio TV Handbook", and Tom Sundstrom's English
        Language Shortwave Broadcast Database. 

        o   "Monitoring Times" is a Grove Enterprises monthly publication. It
            contains a wealth of information concerning current English
            language broadcasts, their frequencies, time of broadcast, and
            provides anticipated Maximum Useable Frequency (MUF) and Lowest
            Useable Frequency (LUF) propagation data for that month for
            broadcasts from various regions of the world. (Grove Enterprises
            telephone number is (704) 837-9200).  

        o   "Passport To World Band Radio" is an International Broadcasting
            Services, LTD. publication. (It may be purchased from a number of
            different shortwave and ham radio retailers including Grove
            Enterprises and Gilfer Shortwave.  It is also available in large
            retail bookstores such as Barnes and Noble). The "Passport to
            World Band Radio", what one reviewer referred to as the "TV Guide
            for World Band Radios", is an excellent reference that identifies
            times and frequencies of all shortwave broadcasts, not just
            English language broadcasts, and provides very useful information
            about station transmitter location, the listening area the
            broadcast is intended, and transmitter power used. 
          
        o   Likewise, the WRTH handbook contains exhaustive detail about
            transmitter power, location, time of broadcasts, etc. for each
            international and domestic shortwave and mediumwave broadcaster
            in the World.  The WRTH is also available from a number of
            shortwave and ham radio retailers as well as a number of larger
            retail bookstores.

        o   A very convenient way to obtain the most up to date information
            about English language broadcasts is to subscribe to the
            internationally acclaimed database authored by Thomas R.
            Sundstrom.   DX-COMM PLUS has the capability of directly
                                      -34-


            importing this database for use with the Drake R8.  This import
            feature is fully described in this manual's section entitled TRS
            DATABASE IMPORT FEATURE.  Tom Sundstrom's database is available
            on a subscription basis by ordering it by mail from TRS
            Consultants, P.O. Box 2275, Vincentown, NJ 08088-2275 or by
            telephoning him at (609) 859-2447.  Regular updates of the
            database may be obtained by subscribers by downloading a
            specified file from PICs ONLINE RBBS at (609) 753-2540.  

        ALTERNATIVE METHOD OF ENTERING FREQUENCY IN
        NEW OR EDITED RECORD        

        If instead of using the Drake frequency when queried at the
        beginning of the "Data Entry Screen", you had desired to type in a
        frequency, you could have pressed "N".  This would put the cursor
        within the "Frequency =" field.  At this point you could type in
        the frequency you wanted to use - however, in doing so you must
        enter 8 characters of information in the form xx.xxxxx (i.e 9.59000
        could be  "09.59000" or " 9.59000" - in the latter case the space
        bar was pressed on the computer keyboard for the first character. 
        (Note: you must enter the "." at the third character position for
        frequencies of less than 55 mHz - for frequencies greater than 108
        mHz the "." is in the fourth position).  Then enter data as
        previously described for the subsequent fields of this new record. 
        When you come to the "Drake Download String =" field the field will
        automatically display a default string setting of " 00 612<8" which
        is equivalent to Channel 00, Noise Blanker = Narrow, AGC = Fast,
        RF= off, Notch filter = off, Antenna = 1, Mode = AM, Bandwidth =
        6.0, VFO= A, Synchro Det. = off, and Scanning = No.  

        There is also an automated feature in DX-COMM PLUS to enter the   
        desired frequency into the frequency field.  Suppose, for example,
        you accessed the "Data Entry Screen" but ou did not ave the correct
        frequency tuned in on the Drake.  At the screen prompt to use the
        Drake frequency or Import (Y/n/I), press "N".  When the cursor is
        located in the 1st character position of the "Frequency =" field,
        retune the Drake manually to the frequency and setting you desire,
        and then press the Function F1 key followed by  <ENTER>.  This
        retrieves the new Drake settings, displays the frequency, and will
        later display within the "Drake Download String =" field the mode,
        bandwidth and all other relevant parameters for the station you've
        currently tuned.           

        ADD RECORD FEATURE OF DATABASE MENU SCREEN

        An alternate way of entering new records is within the "Database
        Display" described previously.  To access the "Database Menu
        Screen" press the "Q" key from within the "Database Display"
        screen.  Once the "Database Menu" is displayed, one can simply
                                      -35-


        press "A", which provides the same "Data Entry Screen" as described
        before.  

        EDITING AND DELETING RECORDS

        One can edit records from within the "Database Display" screen by
        pressing "E" followed by the Index number of the record to edit. 
        An example of the Edit Screen is shown below.  Index numbers are
        those displayed directly under the "INDEX#" heading of the Database
        Display.  The Edit Screen appears as shown below:


                  DX-COMM PLUS: COMMUNICATIONS RECEIVER               17:41:20
         TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB   AGC  RF   NOTCH  ANT  MODE  BAND   VFO  SYNCHRO  SCAN  CHANNEL
-------------------------------------------------------------------------------
15.43000  N   FAST   OFF   OFF    1    AM    6.0    A     OFF     NO     15
-------------------------------------------------------------------------------
Edit (Y/n) or Delete (D)?



INDEX#= 1116  REC#= 1448
-------------------------------------------------------------------------------
Frequency = 15.43000*MHz               R. Station = CHANNEL AFRICA, S.AFRICA
Start UTC = 1700                       End UTC = 1800
Days Operating (MTWHFAS) = MTWHFAS
Longitude =  28  03' E                 Latitude =  26  12' S
Drake Download String =  00 612<8  15.43000*mHz
(W)inter, (S)ummer, (A)ll = A          (S)hortwave/(U)tility/(S)pecial = s
(A)ctive/(I)nactive/S(p)ecial = a      Remarks =


F1 = Drake Freq.             Enter = Skip Field          Tab = Highlight Field


        The "Edit Screen" displays information by field in the same format
        that was displayed during initial data entry.  The user is prompted
        with the statement "Edit (Y/n) or (D)elete". If you decide not to
        change anything then simply press "N" followed by <ENTER> or simply
        the <ENTER> key.  If on the other hand you decide to change the
        information being displayed for the record in question then type
        "Y" followed by <ENTER>. 

        If you decide to change the frequency field information you have
        two alternatives.  One option is to type it in directly,
        remembering that you must enter 8 characters of data (xx.xxxxx). 
        Again it should be noted, the first character may be a space if the
        frequency is less than 10 Mhz. (i.e. frequency to enter is 9.59000
        one would enter " 9.59000). An alternative way of entering the
        frequency is to retune the Drake manually to the frequency and the
        download settings desired and then within the first character
        position of the "Frequency =" field press Function F1 followed by
        <ENTER>.  The new Drake frequency will then be displayed, as will
                                      -36-


        the corresponding "Drake Download String" when that field is
        accessed. 

        If you need to change a field somewhere in the middle or end of the
        record, and desire to keep the other fields unchanged, simply press
        the <ENTER> key for each field of data you wish to retain.  This
        skips from the first character position of one field to the first
        character position of the next field. Once, you start typing in a
        particular field though, you must continue retyping all the
        information you want in that field.   It should be noted that the
        field will display the characters of the prior entry until written
        over.  For example, let's say in the "R. Station =" field I had
        mistyped when entering the original data "BBC LLONDON".  The
        mistake here obviously was too many L's.  In the Editing mode I
        would retype "BBC LONDON" followed by pressing <ENTER>.  Pressing
        <ENTER> marks the end of the string that you have entered to be
        stored in the SWDB.DAT file.  

        When you have completed the editing of the particular record, you
        will again be prompted "Edit (Y/n) or (D)elete".  If you mistyped
        something you can again go back through the record and make your
        changes, otherwise simply press "N" and/or <ENTER>.  If you
        modified the "Start UTC" or "R. Station" or "Frequency =" fields or
        designated a shortwave or utility station as now a "special" log or
        vice versa, you might have to resort the database at the end of the
        edit to have the record properly display.              

        In addition to editing records you may also delete them from within
        this screen.  You do this by pressing "D" when prompted by "Edit
        (Y/n) or (D)elete?".  The record will remain active until the user
        re-sorts the database at which time the record will be removed.  If
        a record is being deleted which happens to fall into the UTC time
        that the program is presently displaying, that record will display
        "DELETE" in the "TIME" column of the display.

        At the bottom of the Edit Screen is a function entitled
        "TAB=Highlight Field".  This feature willl be described in the
        section "FIELD CAPTURE, GLOBAL EDIT, AND FIELD IMPORT FEATURE".


        UNDELETING RECORDS

        If you want to un-delete a record, first proceed to the Database
        Display Screen.  Now move the red cursor bar using the "]" or "["
        keys to position the cursor over the record in question.  Press ^T 
        (Ctrl T) to tag the record.  When you do this the Index number in
        the Database Display Screen will be highlighted in purple.  Now
        press "D" for delete.  This will un-delete the record in question. 
                                      -37-


        DELETING RECORDS DIRECTLY FROM WITHIN
        DATABASE DISPLAY SCREEN
                   
        In a similar manner as described for undeleting a record, one could
        first tag records within the Database Display Screen and then press
        "D".  Each record tagged will now display the words "DELETE" in the
        Display's TIME column and the purple "TAG" will be removed.  This
        codes the records for future deletion upon sorting, however, until
        resorted, the records remain part of the database.  

        Please note that once the tag feature is activated other features
        involving the tagging of records (these include ACR and ALERT
        features as described later in this manual) are "locked out" until
        the tags are cleared by pressing ^U (Ctrl - U).


        FIELD CAPTURE, GLOBAL EDIT, & FIELD IMPORT
        FEATURES

        Another feature provided within the Edit Screen is to capture
        fields for later importing into either other existing records or
        new records, or for use within the MUF-LUF plotting portion of the
        program.  One can capture field information by simply pressing the
        "TAB" key when in the first character position of the field(s) in
        question.

        Captured fields may be inserted into other records by using the
        "Glo(B)al" command when within the Database Display Screen, or by
        importing the fields when "Adding" a record to the database by
        pressing "I" when queried "Use Drake Frequency or Import (Y/n/I). 
     
        To use the Global editing command irst edit a record from which you
        wish to retrieve certain data fields.  When within the edit screen
        highlighting the desired fields by using the TAB key.  Exit the
        Edit Screen.  Then within the Database Display Screen tag the
        records desired to be globally edited, and then presses the "B"
        key.  

        As an example, say one wanted to use the Radio Station name from
        record 531 as well as the longitude and latitude information from
        that record.  For purposes of the example, also assume that one
        also wanted to import this field information into records denoted
        by the index numbers 555 and 565.  First select "E" for edit and
        type 531 to edit record 531.  When within the Edit Screen press the
        <ENTER> key until the cursor is in the first character position of
        the R.Station field.  Now press the "TAB" key.  The field will turn
        "pink".  The cursor will automatically jump to the next field
        position.  Continue to press <ENTER> until the cursor is in the
        first character position of the Longitude field.  Press the "TAB"
                                      -38-                               


        key again.  This will highlight the longitude field in pink.  Do
        the same once the cursor is in the Latitude field.  Then simply
        press the "Enter" key until the cursor is back up at command line
        which says "Edit (Y/n)".  Simply press <ENTER> or "n".  This will
        return you to the Database Display Screen.

        Now move the red cursor over record 555.  Press ^T (Ctrl T).  This
        will highlight the record's index number in purple.  Likewise, move
        the cursor to record 565 and press ^T.  Now press the "B" key. 
        This will perform a global edit and modify records 555 and 565 to
        now contain the same R.Station and Longitude and Latitude field
        information as record 531.  

        Upon completion of the global edit, press ^U (Ctrl U) to untag the
        "Tagged" records.  Please note that one could also have moved the
        cursor over record 555 and pressed ^T (Ctrl T) and then again over
        record 565 to untag those individual records.     

        Captured field information may also be used with the MUF-LUF
        plotting program.  To use this feature capture R.Station,
        Longitude, and Latitude information from the desired record.  Now
        return to the Database Display Screen.  Now press "G" to proceed to
        the MUF-LUF plotting program.  Once within the MUF-LUF Plotting
        menu, press "P".  The R.Station and Longitude and Latitude
        information should be displayed.  To proceed to plot 24 MUF-LUF
        data then simply press "Y".


        FIND, EDIT, AND DELETE

        From within the "Database Menu" screen the user may search the
        database for a record or set of records.  

        Press "F". The middle of the monitor's display will prompt the user
        with the following: "Enter Search Identifier(s)?"  A few lines
        below this, the screen will display field identifiers of:
        UTC=Startime in UTC; RST=Radio Station; FRQ=Frequency; #####=Index#
        of Record.  The screen will also identify the allowed combinations
        of fields to search as: UTCRST, FRQRST, UTCRSTFRQ.         

        An important point to remember in searching for a particular record
        is that for each of the individual field identifiers, with the
        exception of ##### for record index number, you will be given the
        option of entering the ENTIRE field string (8 characters for
        Frequency; 25 characters for R. Station; and, 4 characters for UTC
        Time), or using a shorter search string as denoted by enclosing the
        search string in the brackets < and >.
     
        If one enters a number (up to five digits long), the database
        record corresponding to the index number entered will be displayed. 
        If a "0" or a number exceeding the maximum number of records in the
                                      -39-


        current database is entered, the program will beep.  Upon a correct
        index number entry, the record will be displayed.  The user then
        has the option of editing, deleting, or highlighting the record as
        previously described in the "EDIT" section above.  
                
        If one wants to find all the records associated with a given UTC
        time one must first enter "UTC".  Directly beneath this command
        line, the user will be prompted by "Enter string to search (<xxx>
        sounds like):?".  Now enter either the start UTC time you are
        seeking as 4 characters (i.e. 0100) or the first two digits of the
        hour as such "<01>".  The former will provide you the first record
        that the search comes across with the start UTC time for the hour
        being searched.  One can either edit that record or simply press
        <ENTER> to skip to the next record that is found.  If the latter
        choice was used,"<01>", the program searches to match the first two
        digits of the start UTC time.  It should be recognized that for
        example 0115, 0130, and 0145 equally satisfy this search criteria.
     
        A search may also be performed by searching the R. Station field. 
        The program will search the entire R. Station field for a
        comparison to a search string.  Enter RST at the first prompt and
        then either all 25 characters making up the string to be searched
        or <xxxx> (Note:xxxx represents the character string to be
        searched).  Using the latter case as an example, suppose I'm
        searching for RADIO THAILAND.  I could enter <THAI> and I would get
        all the records for where there is a match of that string.  Note,
        however, if I had used simply <RADIO> I would get matches to
        stations including RADIO NETHERLANDS, RADIO MOSCOW, etc. as well. 
  
        One can likewise search by Frequency by entering FRQ at the first
        prompt followed by the eight digits of frequency (i.e xx.xxxxx) or
        simply <xx.xxx>.  If the latter <xx.xxx> is used, make sure for
        frequencies that are less than 55 mHz that you enter at least the
        first 3 digits of information up to and including the ".",and for
        frequencies over 108 mHz that you enter the first 4 digits up to
        and including "."
     
        One can also search using the following combinations: UTCRST or
        FRQRST or UTCRSTFRQ.  

        When seeking to search by time and station, use UTCRST at the
        prompt. You will be subsequently prompted to provide the search
        string. You could for instance search for "0000BBC LONDON" or you
        could have made the search string "<00><BBC>" or "0000<BBC>" or
        "<00><LONDON>". 

        Similarly if you had selected FRQRST you could have entered 
        "<9.915>BBC LONDON"  or " 9.91500BBC LONDON" or "< 9.915><LONDON>
        to find the records for when BBC London broadcasts on 9.915 mHz. 
    
        When seeking to search by time, station and frequency use
        UTCRSTFRQ. Several combinations of search strings could be used to
                                      -40-


        find the same record.  For example if one were searching for BBC at
        0000 hour on 6.175 Mhz: "0000BBC LONDON6.17500" or "0000<BBC><
        6.175> or "<00><BBC> 6.17500" OR 0000BBC LONDON< 6.> or
        <00><LONDON>< 6.> to name only a few.

        For a number of search combinations more than one match is likely. 
        The program will continue to display each additional record that it
        comes across that matching the search criteria specified.  One can
        "QUIT" from this search routine by simply pressing the "Q" key when
        the program is displaying "Edit (Y/n) or Delete (D)?" and then
        pressing "Enter".  One also has the option of editing a record
        found by indicating "Y" at the command line.  

        Editing is performed in the same manner as described in the section
        EDITING AND DELETING RECORDS.  The exception is that if one wants
        to capture a field for later use, upon coming back to the command
        line when "Edit (Y/n) or Delete (D)?" is displayed, one must enter
        "Q" if one wants retain captured field information from the record
        just edited.  Otherwise the captured field information will be
        erased once a new record is displayed within the Editing Screen.


        ADDING FREQUENCIES TO THE DRAKE R8 MEMORY
     
        DX-COMM PLUS provides the user the convenient capability of
        sequentially programming the Drake R8's 100 memory channels with
        DX-COMM PLUS's database records.  

        To upload a DX-COMM PLUS database record into one of the Drake R8
        memory channels, first proceed to the Command Screen and type "C"
        followed by a number which can be between 0 and 99.  The number
        entered should correspond to the memory channel you desire to store
        the database record within.  After doing this, return to the
        Database Display Screen by typing "L" and pressing <Enter>.  

        Now select from the Database Display the record you desire to load
        into memory.  Move the red cursor over the desired record and press
        "M".  The record will be displayed on the Drake R8 and the memory
        channel on the Drake will increment up by one, and then the Drake's
        frequency will be reset to the frequency just loaded.  

        Subsequent channels may be entered sequentially simply by placing
        the cursor over the next desired record and pressing the "M" key.

        THE TNC WINDOW            

        To access the "TNC WINDOW" screen simply press the "N" key when
        operating within the "Database Display" screen.  Upon doing so the
        program jumps into an asynchronous terminal emulation mode between
        itself and the TNC.  
                                      -41-


        If you are operating an MFJ-1278 follow these steps to synchronize
        the TNC with DX-COMM PLUS.  Immediately upon pressing the "N" key,
        press the <ENTER> key several times in quick succession.  This will
        lock in the autobaud feature of the MFJ-1278.  Repeat the procedure
        if the TNC fails to synchronize with DX-COMM PLUS. 

        Once the communication is established with the TNC the lower half
        of the display on your computer monitor will look similar to that
        shown (as illustration the screen is shown connected to the MFJ-
        1278).  The commands available within the TNC window itself are
        shown on the bottom two lines of the screen, and those available to
        communicate directly with the Drake are shown on upper half of the
        screen.

                 DX-COMM PLUS:  COMMUNICATIONS RECEIVER
        TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE

FREQUENCY  NB  AGC  RF  NOTCH    ANT   MODE  BAND   VFO  SYNCHRO  SCAN CHANNEL 
-------------------------------------------------------------------------------
xx.xxxxx   xx  xxx  xxx  xxxx     x     xx   x.x     x     xxx     xx    xx 
-------------------------------------------------------------------------------
Enter Command: 
L#### = Load Index#        STEP###            J = Dwn ###        F5 = DWN 10
   (R)eturn                ^Y=Lock            K = Up ###         F7 = UP 10  
                                                                                      
                               TNC WINDOW 
-------------------------------------------------------------------------------
bbRAM: LOADED WITH DEFAULTS 
    |A
  MFJ ENTERPRISES, INC.  
  MODEL MFJ-1278  
  AX.25 Level 2 Version 2.0  
  Release XXXXX  (date) - 32K RAM  
  Checksum XXX  
cmd:           

F5=Buf Display    Sp.Bar=Step   ^A=Clr        ^D/^E=Open/Close File    Esc=Exit
F4=Drake Cmds     Tab=Prn on   BKSP=Prn off   ^\   =Rtrn to Main       F8=VFO A
        

        From within the "TNC WINDOW" simply enter commands as described in
        your TNC owners manual.  For example, for the MFJ-1278, to access
        CW you would simply type MODE CW.
      
        Received and typed text will be scrolled across the TNC WINDOWs
        screen.  You may simultaneously print this information on your
        printer by pressing the "Tab" key.  You may turn the print feature
        off by pressing the "Backspace" key.
     
        DX-COMM PLUS has a 3000 byte buffer for capturing what is displayed
        within the 9 line scrolling window.  To redisplay information
        received or typed simply press "F5".  This automatically sends an
        XOFF$ signal (^S) to the TNC (called software flow control) which
        temporarily stops data transmission.  The buffer then displays one
        line of stored screen data at a time.  You may step the buffer one
                                      -42-
        
        
        line at a time by pressing the keyboard space bar.  You may also
        resume normal TNC operation by pressing the "Esc" key or you may
        step thru the buffer to the end of the buffer at which time the
        program sends an XON$ signal (^Q). 

        The buffer may be cleared of old information by pressing "Ctl A"
        (^A).  This feature is provided as a convenience, but is not
        critical to proper buffer operation.  If this is not done, the
        buffer when filled will simply rewrite over the old information. 
        Please also note that when you leave the TNC Window that this
        buffer is erased.

        When displaying the buffer's stored data you can press the "Tab"
        key which will print each line held in the buffer immediately upon
        displaying it on the screen.  You can turn off the buffer print
        feature by pressing the "Backspace" key. 
                
        In addition to using the buffer to capture typed as well as
        received data, the user may save this information to a DOS ASCII
        file on the computers default directory or some other path as
        designated (the default diretory is the same DOS directory that
        DX.EXE and the *.DAT files reside).  

        This is done by pressing "Ctl D".  Upon pressing this, within the
        TNC window display you will be prompted to enter up to 8 letters
        for a file name.  DX-COMM PLUS automatically attaches the file
        extension ".BUF".  When providing a file name, you may also
        identify a path in which you want this file to reside.  For example
        suppose the file name that you desire is "FILENAME" and you want to
        save this on the "A" drive in the subdirectory TEMP.  You would
        then type "A:\TEMP\FILENAME". The file FILENAME.BUF will then be
        saved to the disk.  
     
        At any time while operating within the TNC Window you may close the
        file by entering "Ctl E".  Upon doing so the program will display
        "File FILENAME.BUF Closed".  
    
        When within the main screen area of the TNC WINDOW the user may
        access either VFO A or VFO B by simply pressing the F8 key.  This
        provides the capability to monitor for example two SITOR stations
        (i.e ship to shore & shore to ship) by simply toggling the F8 key.

        The TNC WINDOW screen also provides the user with direct keyboard
        control of the Drake R8.  This is accomplished by pressing Function
        F4. Upon doing so, the cursor will jump to the line directly below
        DX-COMM PLUS's Drake Frequency display.  You may now enter all the
        commands as identified in the Drake R8 Owner's Manual under the
        section entitled "RS232c Interface".  For example, to increment the
        frequency up or down .01 khz or .1 khz depending on how you have
        the LED Drake Frequency set up, press the "U" or "D" key followed
        by pressing <ENTER>.  Likewise, to enter a frequency into the Drake
        type Fxx.xxxxx and <ENTER>.  If you made a manual adjustment to the
                                      -43-


        Drake R8 directly (i.e. turned the tuning wheel or selected a
        different bandwidth) and you want the DX-COMM PLUS to accurately
        display this information, simply type "RA" and press <ENTER>. 
     
        In addition to the commands as identified in the Drake Owner's
        manual, DX-COMM PLUS provides others as well.  To change bandwidths
        simply type "0.5" or "1.8" or "2.3" or "4.0" or "6.0" followed by
        pressing the <ENTER> key.  Likewise to change modes simply type
        "AM","FM","CW", "RTTY", "LSB" or "USB".  

        Also, one may activate the comport locking feature described under
        UPLOADING DATABASE FREQUENCIES TO THE DRAKE R8.  By pressing ^Y,
        the PC's serial comport is locked in the open state to allow 
        quicker communication between DX-COMM and the serial port of the
        receiver.  Pressing ^Y again toggles this feature off.
     
        Other special features are also provided. 
     
        o   LOADING DATABASE RECORD: If you know the Index# of the database
            record that you wish to upload to the Drake you should simply
            type "L####" where #### is the record's index number. 
          
        o   STEPPING FREQUENCY DISPLAY BY USER SPECIFIED INCREMENT:  You may
            step the frequency display a specified increment up or down by
            first typing "STEP###" where ### represents the step increment. 
            For example, if you want to step the frequency up or down 2.7 kHz
            you would type 270 (provided the actual LED Drake Frequency is
            displaying to the nearest .01 khz.  If you have the frequency
            display set to the nearest 1 khz or .1 khz an increment of 270
            would equal 27.0 khz).  Once set, the user can step the frequency
            up or down by pressing the "J" or "K" key.  This step amount is
            stored until either overwritten by a new value or you exit the
            TNC Window screen. 
          
        o   STEPPING FREQUENCY DISPLAY DOWN OR UP BY INCREMENT OF 10:  You
            may also step the frequency up or down by an increment of 10 (.10
            khz if LED Drake Frequency is set to display to nearest .01 khz
            or 1.0 khz if the LED Drake Frequency is set to display to
            nearest 1 khz or .1khz). This is done simply by pressing the F6
            key for down or F7 key for up. 
            
        To return back to the TNC WINDOW type "R" and press the "Enter"
        key.  To return back to the "Database Display" screen press "Ctl \"
        (^\). Please note that when you leave the TNC WINDOW screen data
        stored in the screen buffer will be erased.

        SCANNING RECORDS

        DX-COMM PLUS provides the capability of scanning user tagged
        records when operating within the Database Display Screen.  To
        activate this feature first move the red cursor onto the record
                                      -44-


        desired and press ^T (Ctrl T).  This "Tags" the record by
        highlighting the record number in purple.  Do the same with other
        records you desire to scan.

        Now press ^S (Ctrl S).  This activates DX-COMM PLUS's scan feature
        by loading in the first record tagged to the Drake R8, then pausing
        on that frequency for the number of seconds specified from the
        program configuration file, and then upon completion of that scan
        period, loading the next sequential tagged file into the Drake. 
        This cycle is repeated until each of the tagged records is entered
        into the Drake.

        Upon loading the last of the tagged records into the Drake, the
        complete cycle is started over again until the user aborts the
        operation.  To end the scan routine simply press any key. 

        Upon exiting the scanning routine, untag the records by pressing ^U
        (Ctrl U).

        AUDIO CASSETTE RECORDER CONTROL

        DX-COMM PLUS allows the user to control the Drake R8 in much the
        same way a Video Cassette Recorder may be programmed to tape a
        desired TV show(s).  To utilize this feature, the user must have an
        audio cassette recorder connected to the Drake R8 and a remote
        control jack connected off of the 5 pin Timer Relay DIN connector
        on the rear panel of the Drake R8 (See Drake Owner's Manual).

        This feature is activated by first tagging records, specifying for
        each record tagged the date the broadcast is to be taped, the UTC
        time you desire the taping to begin, and the UTC time you desire
        the taping to end.  The easiest way to understand this feature is
        by example.

        Let's say you are located on the East Coast of the United States
        and it is October 24, 1992 - 5pm Eastern Standard Time and you
        wanted to tape the BBC London on 5.975 mHz between 0000 hour UTC
        and 0030 hour UTC.  Assume that you wanted to follow this taping
        with Radio Australia on 21.740 mHz between the hours of 0200 UTC
        and 0300 UTC on the same date.

        Now before tagging any records, as good practice use the ^U (Ctl-U)
        key to clear the tagging buffer.

        Now having done this, press "T" in the Database Display Screen and
        type "0000" to get database records starting at 0000 hour UTC.  Now
        move the red cursor in the Database Display Screen over the BBC
        LONDON record for 5.975 mHz.  

        Now press ^V (Ctrl V).  The "Enter Command:" line in the middle of
        the monitor screen will be replaced with "Record No.="; followed by
                                      -45-


        the record number corresponding to BBC LONDON on 5.975 mHz and a
        few spaces later "Date (mmdd) =" and the date "1025".  The computer
        monitor's cursor will be directly under the "1" of "1025".  The
        "1025" (October 25th) is displayed even though your EST Date is
        October 24th since 0000 hour UTC is the start of a new day.  Since
        this is the desired date simply press <Enter>.  (If, however, it
        was some other date desired, one simply types the appropriate month
        and day.  Be careful to make sure that if, for example, the month
        is January, that you type "01" and not "1", and if it is the 5th
        day of the month, that you type "05" and not simply 5). On the same
        line on the computer monitor screen will now be displayed "Start
        UTC = xxxx".   The Start UTC time for the record tagged will be
        displayed.  You can accept this start time by either simply
        pressing <ENTER> or you may enter some other time by typing it into
        this field.  In this case the time "0000" is what we want and we
        press <ENTER>.  Upon pressing <ENTER> (or if we had typed in the
        Start UTC's last digit), on the same line will now appear the
        statement "End UTC=xxxx".  The End UTC time displayed will be the
        same End UTC Time as displayed for the record in the Database
        Display Screen.  If this is the time desired simply press <ENTER>,
        otherwise type in the End UTC time desired.  In our example it is
        "0030".  The line will now be replaced with "Enter Command" and the
        record within the Database Display Screen will be highlighted in
        purple.

        Now press "T" and enter "0200" to get to the database records
        corresponding to 0200 hour.  When the records displayed are for
        0200 scroll the display down to get to the record corresponding to
        Radio Australia on 21.740 mHz.  Move the red cursor over this
        record.  Press ^V (Ctrl V).  The record will be displayed where the
        statement "Enter Command" appeared previously.  In addition, the
        date 1025 will appear.  Simply press <Enter> to accept this as the
        correct date.  Now the Start UTC time will appear.  Unlike the
        first record entered where no time was initially displayed, a start
        time of "0030" hour is displayed.  DX-COMM PLUS anticipates that
        the start time for the next sequential record to be taped is the
        end time for the last record.  In our example, however, we want the
        start time to be "0200" hour.  Therefore, simply enter "0200". 
        When the last digit is entered you are queried to now enter the End
        time.  Enter "0300" hour.

        You may program a maximum of 8 records in this manner.

        Upon completion of the programming as described above, you may
        review these entries and make changes to the stored start stop
        times by pressing ^R (Ctl-R).  Upon doing so the Database Display
        Screen window will be replaced by each of the individual records
        tagged, the start/stop times, and an identifier called the Sequence
        Number in which the records will be uploaded to the Drake.  If you
        desire to edit let's say what you've programmed for the first
        upload record, type then number "1" and <ENTER>.  The information
        will be redisplayed on the Enter Command line allowing you to edit
                                      -46-


        where appropriate.  When you are satisfied that the ACR programming
        is proper simply press <ENTER> and DX-COMM PLUS will return to the
        Database Display Screen to await your next command.

        If, however, you wanted to untag one of the records to be uploaded,
        simply move the red highlight bar onto the record in the Database
        Display Screen and press ^V (Ctrl - V).  You will note that the
        Index# for the record in question is no longer highlighted in
        purple.  However, for our particular example assume that we wanted
        to proceed with using the records as selected.

        You are now ready to activate the ACR function.  To do this make
        sure your Audio Cassette Recorder or Tape Recorder is in the record
        mode.  Press ^P (Ctrl P).  This activates the ACR function and
        acknowledges this to the user by replacing the "Enter Command" line
        with "ACR INITIATED".  Turn your radio off manually using the POWER
        button located on the Drake R8's main panel.  At 0000 hour UTC the
        Drake will power up, then the database record will be uploaded into
        the Drake, and finally the timer relay will be activated -- thus
        starting the tape recording of the broadcast.  At 0030 hour the
        timer relay will be shut off (stopping the tape recording),
        followed by powering down the Drake.  At 0200 hour the Drake will
        be powered up again, the Radio Australia record will be uploaded
        into the Drake, and the Timer Relay activated (reactivating the
        tape recorder).  At 0300 hour the timer relay will be de-energized
        (shutting off the tape recorder) and the Drake will be powered
        down.

        If after activating the ACR function you wish to abort, simply
        press any key.  If you desire to untag all the ACR records, simply
        press ^U (Ctl U) to do so.

        ALERT FEATURE

        Similar to the ACR programming feature, the DX-COMM PLUS user may
        also tag a record to be uploaded at a prescribed time.  However,
        unlike the ACR feature, the user can continue to use DX-COMM PLUS
        after activating this feature.

        This feature is useful instead of trying to remember to pick up the
        18 minutes after the hour broadcast of WWV for Solar Flux
        information, to automatically do so.  Or to automatically switch to
        your favorite SW program at a prescribed time.

        To activate the feature, move the red highlight bar in the Database
        Display Screen over the record desired.  Now press ^A (Ctl A). 
        Similar to the ACR feature, the record along with the date, Start
        UTC and End UTC times will now be shown in place of the Enter
        Command line.  While you may edit any field it is only the START
        UTC time that is relevant to this feature.   Also, unlike, the ACR
        feature only one record may be tagged for "ALERT" status.  
                                      -47-


        Upon completing the above, the record will be displayed at the
        bottom of the Database Display Screen in purple.  

        When the prescribed Start UTC time is passed 5 warning beeps will
        be heard.  If you do nothing, at the end of the 5th beep, the Radio
        will automatically swap to the other VFO, and the tagged record
        will be uploaded to the Drake.  This feature will activate when
        operating within the following screens:  The Database Display
        Screen, The Database Menu Screen, and the Command Screen.  If you
        are operating in another screen and the Start UTC time is exceeded,
        upon returning back into one of the above three screens the Alert
        feature will automatically activate.

        You may abort the upload of this information if at any time before
        or within the 5 warning beeps by pressing ^C (Ctl - C).  This will
        then clear the tagged purple record at the bottom of the Database
        Display screen.

        PRINTING RECORDS

        You can print your entire "shortwave", "utility", and "special"
        database records to any printer which accepts EPSON type commands
        or to a disk for later editing.  Records are printed out in the
        order they were last sorted.  Therefore, if the user desires a
        different sequence then the one that is displayed in the Database
        Display Screen you must re-sort the database accordingly.  

        Upon doing this, in the "Database Menu" screen press "P", and the
        following prompt will appear "Enter (SB), (SA), (SI), (SP), (UB),
        (UA), or (UI) or (P)rinter Setup:".  If you decide you do not want
        to print data you may simply press <ENTER> returning you back to
        the command line which displays the words "Enter Command:".
            
        If you do want to either print out data or to save it to a disk,
        first check to determine whether the printer setup string is as
        desired.  To do this press "P".  The string provided with DX-COMM
        PLUS is "27/64/27/15/27/71".  This is equivalent to "Esc @; Esc SI;
        and Esc "G" which commands an EPSON compatible printer to perform
        a master reset, selects condensed style printing, and turns the
        double strike mode on.  Use a "," to separate these commands.  If
        the setup string is proper simply press <ENTER>.  If not, retype in
        the correct values for your printer.  You can enter a maximum of
        six control codes. 

        Next the command line on the screen will display "Number of Lines". 
        These are the number of lines per page in your printer.  For
        example and 8.5x11 inch piece of paper normally can contain 66
        lines of information if printed in the "portrait" mode.  The  value
        initially provided with DX-COMM plus is 66, if this is correct
        simply press <ENTER>.  If it isn't, simply type in the correct
        value.
                                      -48-            


        Upon verifying the printer setup string is properly set, enter the
        letters corresponding to the data you want printed (ie. UA stands
        for all Utility Active loggings, SB stands for both Shortwave
        active and inactive records, SP for "special" loggings, etc.).  
        The program will now say "Print Records to (P)rinter or (F)ile".  

        If you desire to print the records to the printer, make sure you
        align the paper to the top of the page, and then press "P".  If at
        any time you want to terminate the printing of the database, simply
        press the "Esc" key.  

        If on the other hand you wish to have the records printed to a
        disk, press "F".  Upon pressing "F" the program will query you to
        type the path and file name.  Note the program will automatically
        attach the extension ".TXT" to your file.  Upon either typing eight
        characters for the filename or <ENTER> the program displays the
        drive, path, and filename of where the records are being printed. 

        DOS SHELL

        The Database Display screen provides the user the ability to
        temporarily suspend operations and to invoke the DOS SHELL feature. 
        This is accomplished by pressing the F10 key (Function F10).  Upon
        doing so, the screen will clear and the DOS prompt will appear.  To
        return to the DX-COMM PLUS type "EXIT" at the DOS prompt. 

        Be careful, however, to ensure that before returning to DX-COMM
        PLUS that you are within the same directory/sub-directory as the
        DX-COMM PLUS data files.  If this is not done, DX-COMM PLUS will
        not display any database records upon returning to the program. 
            
        EXITING DX-COMM PLUS
            
        There are 3 ways to exit the program.  The first is to type ^Q
        (Ctrl Q) when within the Database Display Screen -- this feature is
        termed a fast exit.  The second method is to do the following:  If
        in the Database Display screen press "Q".  This in turn takes you
        to the "Database Menu" screen.  Press "Q" again.  This takes you to
        the Command Screen.  Press "Q" again and enter.  This returns you
        to the DOS prompt.  The final way is simply to press "C" in the
        "Database Display".  This in turn takes you to the "Command
        Screen".  Then press "Q" and <ENTER> which exits the program.     
   
        IT IS IMPORTANT TO PROPERLY EXIT THE PROGRAM IN ONE OF THE MANNERS
        DESCRIBED TO ASSURE THAT ALL DATABASE FILES ARE PROPERLY CLOSED. 
        FAILURE TO DO SO (i.e. Simply turning the computer off while within
        one of the program's screens) MAY ADVERSELY AFFECT DATA FILES. 

                                      -49-


                                    TRS DATABASE



        As has already been mentioned, the TRS Database referred to in this
        manual is the internationally acclaimed English language shortwave
        broadcast schedule database authored by Tom Sundstrom.  It is for
        sale on a subscription basis by TRS Consultants through the PICs
        ONLINE RBBS at 609-753-2540(data); or by writing to TRS Consultants
        at PO Box 2275, Vincentown, New Jersey, 08088-2275; or by phoning
        609-0859-2447 (voice); or by Fax 609-859-3226.

        IMPORTING THE TRS SWBC DATABASE INTO DX-COMM
        PLUS

        To import the TRS SWBC Database into DX-COMM PLUS take the file
        SWSKED.DBF and place it in the same directory and sub-directory on
        your hard drive as the other DX-COMM PLUS files.  Having done this
        start DX-COMM PLUS by typing "DX" at the DOS prompt.

        Within the Database Display screen press ^Z (Ctrl Z).  This swaps
        the database supplied with DX-COMM PLUS with a file of zero
        records.  The original DX-COMM PLUS files SWDB.DAT are renamed
        TRS.DAT, INDX.DAT is renamed TRSINDX.DAT, and FLAG.DAT is renamed
        TRSFLAGS.DAT.  The file COM.DAT is also swapped with the file
        TRSCOM.DAT

        Upon completion of this first step, the Database Display Screen
        will show zero records as depicted by an "End Of File" statement in
        the first line of the display window.  Having done this, now press
        "Q" to call up the Database Menu Screen.

        From within the Database Menu Screen press the "I" key.  A
        statement will appear in the command line saying "Import the TRS
        Database (Y/n)?".  By responding with a "Y" the program first
        determines if the COM.DAT file is indeed the configuration file for
        the to be created TRS Database.  If instead it is the COM.DAT file
        for DX-COMM PLUS's database (indicating perhaps that the earlier
        step of swapping databases wasn't performed) the computer will
        beep, a statement will inform you that this is not the TRS
        database, and will then return you to the Enter Command line of the
        Database Menu Screen.  If, however, this test is successfully
        passed, DX-COMM PLUS automatically erases the existing database
        file (if there is one) and starts to create the SWDB.DAT file from
        the file SWSKED.DBF.  As each record in this new file is created a
        record count will be displayed on the middle right of your computer
        monitor.  Completion of the conversion operation is signified when
        the "Enter Command:" statement returns to the middle of the
        computer monitor's screen.  
                                      -50-


        The next step is to create the files INDX.DAT and FLAG.DAT which
        are used for indexing the database.  To create these files press
        the "S" key to sort the database.  Upon completion of the sorting
        of the database return to the Database Display Screen by pressing
        the "L" key.

        The TRS.DAT data file should display in a manner similar to that of
        the one supplied with DX-COMM PLUS with the exception that the
        right hand portion of the display contains the "NOTES" field,
        whereas in DX-COMM PLUS the season of the broadcast and MUF and LUF
        are displayed.


                  DX-COMM PLUS: COMMUNICATIONS RECEIVER
         TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB   AGC  RF   NOTCH  ANT  MODE  BAND   VFO  SYNCHRO  SCAN  CHANNEL
-------------------------------------------------------------------------------
 9.53000  N   FAST PREAMP  OFF    1    AM    6.0    B     OFF     NO     02
-------------------------------------------------------------------------------
Enter Command:
(C)ommands   S(W)itch  (A)dd   ^Y=Lock ^Z= SWDB Chg   ^S= Scan   ^P= Program
    and      (T)ime    (E)dit  (F)lux#   (M)emory     ^U= Untag  ^Q= Fast Quit

INDEX#  TIME    TYPE     STATION                FREQUENCY         NOTES
-------------------------------------------------------------------------------
 292  0200-0300 s-a  Channel Africa ,South Afr  11.74500
 293  0200-0230 s-a  FEBC           ,Philippin  15.45000
 294  0200-0300 s-a  HCJB           ,Ecuador     9.74500  #1&2 USB | #3 SA
 295  0200-0300 s-a  HCJB           ,Ecuador    15.11500  #1&2 USB | #3 SA
 296  0200-0300 s-a  HCJB           ,Ecuador    15.15500  #1&2 USB | #3 SA
 297  0200-0300 s-a  HCJB           ,Ecuador    17.49000  #1&2 USB | #3 SA
 298  0200-0300 s-a  HCJB           ,Ecuador    21.45500  #1&2 USB | #3 SA
 299  0200-0300 s-a  Italian Radio  ,Italy       7.12500  test

^R=Review       Glo(B)al          F3 = TSF SWDB      F10= DOS    (X)tra  ^V=ACR
(G)raph      F9 = Freq. Offset    ^[= Move SWDB      F8=VFO B    ^T=Tag  (Q)uit


        If for any reason the database is not displayed, press "S" followed
        by "A" to make sure DX-COMM PLUS is displaying the "Shortwave
        Active" broadcasts.  Please note that when the file TRS.DAT is
        created it is assumed in the conversion process that all the files
        in the database are "active". 

        To list the "TARGET" region for each broadcast record simply press
        "W".  You redisplay "NOTES" by simply pressing "W" again.

        To swap back to DX-COMM PLUS's database at any time, press ^Z (Ctrl
        Z).  This simply swaps the files TRS.DAT with SWDB.DAT, TRSINDX.DAT
        with INDX.DAT, TRSFLAG.DAT with FLAG.DAT, and TRSCOM.DAT with
        COM.DAT.  DX-COMM PLUS's database should now be displayed.
                                      -51-



        EDITING OR ADDING TO THE TRS SWBC DATABASE

        If you desire to add your own records to the TRS Database or simply
        to edit the existing records the ADD and EDIT features in both the
        Database Display Screen and the Database Menu Screen are
        essentially the same as they were for the database provided with
        DX-COMM PLUS, with minor exception.  The exception being that the
        TRS Database does not use longitude or latitude fields to calculate
        MUF and LUF. Instead these fields are replaced by a 20 character
        field for denoting the Target region of the broadcast in question.
        In addition, the field for the days of the week for the broadcast
        has been replaced by a field of identical length except now
        denoting the last date the particular broadcast record was updated.

        A sample of the Edit Screen is shown below:


                  DX-COMM PLUS: COMMUNICATIONS RECEIVER               2:52:01
         TERMINAL CONTROL PROGRAM AND SHORTWAVE BROADCAST DATABASE


FREQUENCY  NB   AGC  RF   NOTCH  ANT  MODE  BAND   VFO  SYNCHRO  SCAN  CHANNEL
-------------------------------------------------------------------------------
 9.53000  N   FAST PREAMP  OFF    1    AM    6.0    B     OFF     NO     02
-------------------------------------------------------------------------------
Edit (Y/n) or Delete (D)?



INDEX#= 298  REC#= 298
-------------------------------------------------------------------------------
Frequency = 21.45500*mHz               R. Station = HCJB,        Ecuador
Start UTC = 0200                       End UTC = 0300
Date Last Updated (yrmmdd)=921128
Target Info=NAm/SAm
Drake Download String =  00 682<8  21.45500*mHz
(W)inter, (S)ummer, (A)ll = A          (S)hortwave/(U)tility/(S)pecial = s
(A)ctive/(I)nactive/S(p)ecial = a      Remarks = #1&2 USB | #3 SA


F1 = Drake Freq.             Enter = Skip Field           Tab = Highlight Field


        COPYING RECORDS BETWEEN DATABASES

        DX-COMM PLUS provides the ability to copy records from one database
        to the other.  For example, let's say you wanted to update DX-COMM
        PLUS's database with records provided with the TRS Database.  To do
        this, simply switch to the TRS database as previously described. 
        Now within the Database Display Screen move the cursor over the
        record you desire to copy.  Press ^T (Ctrl T) to tag the record. 
        The record number should appear with a purple background.  Now the
        repeat the same for any other additional records you desire to
        copy.

                                      -52-


        Upon completing the tagging operation, press ^[ (Ctrl [) to copy
        the records to DX-COMM PLUS's database.  Having done this, the
        tagged records within the Database Display Screen will now appear
        normal (no longer shown with a purple background).  Now switch back
        to DX-COMM PLUS's database by pressing ^Z (Ctrl Z).  You should be
        able to see the copied records as "Shortwave Active" records for
        their corresponding Start UTC hour(s).

        You now have the option to modify these records to include latitude
        and longitude information, and other fields in a consistent manner
        to other records for the same broadcaster.  Note you should at a
        minimum make sure the broadcaster's name is identically specified
        as other records in the database to ensure proper sorting and
        grouping of the records.

                                      -53-                                 


                                    APPENDICES
                                    
                                         
        APPENDIX A: USING DX-COMM VER.'s 1.01, 2.1, 
                    2.32, 3.01, 3.2, & 3.3 SWDB.DAT 
              
        If you previously downloaded ver1.01, ver2.1, or 2.32, 3.01, 3.2 or
        3.3 of the shareware version of DX-COMM (Note DX-COMM was
        previously named QUICKCOMM), and have since added to that version's
        database, you have two options.  

        The first option is that you can use that "old" database instead of
        the one provided with DX-COMM PLUS by doing the following:

        1) Replace the SWDB.DAT file that came with DX-COMM PLUS with your
           existing SWDB.DAT file. 

        2) Erase the file INDX.DAT and FLAG.DAT from the drive and 
           directory you have placed DX-COMM PLUS's DX.EXE and the other
           files. 

        3) Start the program by typing DX.EXE at the DOS prompt. The pro-
           gram will immediately display the Database Screen except no
           frequency listings will be displayed on the bottom half of the
           screen. Now press the "Q" key. This will take you to the                                                               Data-
           base Menu.  Press the "S" key to initialize and sort the data-
           base. This creates the files on your directory or disk called
           INDX.DAT and FLAG.DAT. Now return to the Database Display
           Screen by pressing the "L" key.  The lower half of the screen
           should display shortwave frequencies for the appropriate hour
           of day.

        The second option is to temporarily rename your "old" data files
        SWDB.DAT, INDX.DAT and FLAG.DAT to TRSSWDB.DAT, TRSINDX.DAT, and
        TRSFLAG.DAT and to then compare the "old" datalisting to the new
        database provided with DX-COMM PLUS.  To do this perform the
        following operation:

        1) Place these datafiles on the same directory/ subdirectory as
           DX-COMM PLUS's files.  Then start the program by typing DX.EXE
           at the DOS prompt.

        2) The program will display english language broadcasts for the
           particular UTC hour in question.  Scan down the list.  Now      
           press ^Z (Ctrl - Z).  This will switch the "TRS" prefixed data
           files with the main data files and display your "old" records.
           The exception being that rather than displaying MUF-LUF and
           days of the week for the broadcasts in question, only "Remarks"
           now is displayed.  If you find there are records from your old
           database that you want to copy to DX-COMM PLUS's database, tag
                                      -54-


           the records in question by moving the cursor over the record
           and pressing ^T (Ctrl - T).  After tagging the records you want
           to copy, then press ^[ (Ctrl - [).  This copies all the tagged
           records to the new database. To untag the records press ^U
           (Ctrl - U).

        3) Now press ^Z to go back to DX-COMM PLUS's database to see that
           the records have been properly copied.  Since these records
           have been added to DX-COMM PLUS's database, the database must
           now be resorted to place the records in their proper order.
                                      -55-


        APPENDIX B: PROGRAMMING CONSIDERATIONS

        For those individuals knowledgeable in programming and who desire
        to merge other available databases into DX-COMM PLUS the following
        information is provided: 

        SWDB.DAT is a random file of the following fields and length: 
                Frequency as a string                 8 characters            
                R. Station as a string               25 characters            
                Start UTC as a string                 4 characters            
                End UTC as a string                   4 characters            
                Days station broadcasts as string     7 characters            
                Longitude as string                  10 characters            
                Latitude as string                   10 characters            
                Drake datastring as string           25 characters            
                W/S broadcast designation as string   3 characters            
                Remarks as string                    25 characters         
   
        Longitude data is stored in its field as "xxx__xx'_x" where the
        first "xxx" contain degrees, "__" represents the ascii character
        for degree and a blank, the second "xx" represents minutes,
        followed by '_ which represents the symbol for minutes and a blank,
        and the last "x" represents E for East or W for West.
            
        Latitude data is stored in its field as "_xx__xx'_x" where the
        first character in the 10 character field is blank, the "xx"
        represents degrees, "__" represents the ascii character for degree
        and a blank, the second "xx" represents minutes, followed by '_
        which represents the symbol for minutes and a blank, and the last
        "x" represents N for North or S for South.
            
        The Drake datastring appears as such in the 25 character field
        (where "_" represents a blank):
            
                          "_xx_xxxxxABxx.xxxxx_MHz__".          

        The "AB" located in the middle of the string indicates where the
        identifiers for shortwave/utility/special broadcast is stored (i.e.
        sa, si, ua, ui, or sp). 
            
        FLAG.DAT's purpose is to establish record flags for where a given
        hour's records begin and end in the SWDB.DAT database.  This
        particular feature was provided for PC's that run at slower clock
        speeds in order to speed the display of information to the screen
        as quickly as possible.  A total of 26 flags are stored starting
        with the first flag being the first record number in SWDB.DAT, the
        second flag being the first record for 0100 hour, the third being
        the first record for 0200 hour and so on, all the way to the 25th
        flag being the record corresponding to either the last record of
        the database or if "special" records exist, then the first record
                                      -56-


        of the "special" section of the database.  The 26th flag is the
        last record of the SWDB.DAT database.
                 
        INDX.DAT is a random file which acts as an index to sort the
        SWDB.DAT database.  The file has the following format:
    
                        RECORDNUMBER as integer
    
        To accomplish sorting a RAM file is added to INDX.DAT with the 
        following format:
    
                        START TIME as string *8
                        R. STATION as string * 25
                        FREQUENCY as string * 8         
          
        RECORDNUMBER denotes the corresponding record number in the file
        SWDB.DAT. 

        START TIME is the field in SWDB.DAT corresponding to RECORDNUMBER.
                       
        R. STATION is the field in SWDB.DAT corresponding to RECORDNUMBER.

        FREQUENCY is the field in SWDB.DAT corresponding to RECORDNUMBER.



                                      -57-


        APPENDIX C: PROGRAM ENHANCEMENTS

        DX-COMM PLUS ENHANCEMENTS:  DX-COMM PLUS incorporates the following
        enhancements over the shareware versions of the program:

        o  Ability to import and use the English Language shortwave
           broadcast database authored by Tom Sundstrom.

        o  Improved hardware handshaking between the Drake's RS232 port     
           and the com port used by DX-COMM PLUS;

        o  Scanning and Audio Cassette Recorder programming capability.

        o  An improved sort algorithm making sorts 50-90% faster.
                 
        o  Global Editing capability to take information from one record
           and import it into tagged records or newly created records or
           into the Mufgraph program for MUF-LUF plotting.

        o  Timed programming control of an audio cassette recorder to 
           record up to 8 different broadcasts.

        o  An Alert feature to automatically "remember" to switch to a 
           desired broadcast at a preset time.

        o  The capability to modify the entire database to either
           Antenna 1 or Antenna 2 operation.

        o  The ability to change the "default" database (the Drake          
           control parameters) string used when adding records to the         
           database.

        o  A Quick Exit capability.

        o  Additional Database configuration capability to allow the
           user up to five ways to sort and display the database
           records.

        o  A user friendly memory channel storage capability.
            
        o  Provides for VHF Converter operation and uploading and
           downloading from the Drake for designated VHF frequencies.
  
        VERSION 3.3, 3.2 and 3.01 ENHANCEMENTs

        DX-COMM ver3.3 was converted from QuickBasic to Microsoft's Basic
        Professional Development System 7.1.  In addition to program speed
        improvements, it now provides longpath calculation for MUF and LUF
        and a RTTY and CW frequency offset feature to rectify a display
        peculiarity of the Drake R8.
                                      -58-


        DX-COMM ver3.2 includes a TNC WINDOW to allow direct access and
        simultaneous access and decoding from a Terminal Node Controller
        such as the MFJ-1278 and PK-232. 

        DX-COMM ver3.2 also provides a movable cursor bar in the Database
        Display screen allowing the user to mover the cursor over the
        record desired and press "Enter" to load that record into the
        Drake.

        Ver3.2 of The program also includes MUFGRAPH to graphically 
        display MUF-LUF information for selected transmitter-receiver
        locations.
   
        DX-COMM in prior versions was called QUICKCOMM.  This has been
        changed to avoid potential conflicts with commercial software of a
        similar name. 

        VERSION 2.32 and 2.1 ENHANCEMENTS 

        Ver2.32 corrected a problem with the terminal emulation routine
        found by some users in prior versions of the program. It also
        contains several major enhancement to that of ver2.1. 

        -  The program now provides a file (FLAG.DAT) to flag where
           groups of records for a given hour UTC reside with SWDB.DAT. 
           The program will now rapidly list station, frequency, and
           other associated record information within the "Database
           Display" screen. 

        -  The program now calculates Maximum Useable Frequency for      
           each record in the display when appropriate Solar Flux and
           transmitter/receiver longitude and latitude information is
           provided by the user. 

        -  The capability of displaying multiple hour look-ahead of
           database records is now provided within "Database Display"
           screen.  

        Ver2.1 contains a number of enhancements over that of the prior
        release ver1.01.  These include:
            
        -  PGUP/PGDN and HOME and END key functions to quickly move      
           thru the database display listings;
   
        -  An INDX.DAT file to immediately load the sorted database      
           into the program upon program start-up;                   

        -  The program now sorts only when requested by the user to      
           do so - prior version sorted automatically after adding       
           new data records;

                                      -59-


        -  Program returns to the same location within the database    
           display listing after performing EDIT and ADD record
           functions as the user was reviewing prior to performing these
           functions;    

        -  The program now contains the "special" logging function for
           logging stations that either broadcast 24 hours per day (i.e.
           WWV) or are HAM related frequencies. 

        -  Program now includes the capability to delete records from
           the database.

        -  Ver2.1 corrects some of the minor bugs in ver1.01 which
           included problems in the uploading of the Syncro Function     
           to the receiver, ESC function in the New Record display.      
    
        -  Ver2.1's manual documents the "(SC)an" function in the
           Command Screen as well as the capability of entering a string
           of "U's" and "D's" to increment frequency up or down within
           the Command Screen.        

        -  Ver2.1 corrects a significant programming oversight which    
           precluded dimensioned arrays of greater than 64k.  This      
           would have limited the size of the user's database to
           approximately 700 to 800 records.  Ver2.1 should allow the
           user to create a database of several thousand records.        
 
        -  Ver2.1 includes about 300 additional frequency records in the 
           database compared to ver1.01.         
                                      -60-


        APPENDIX D: MODIFYING THE DATABASE TO USE   
                    ONLY ONE ANTENNA 

        The database provided with DX-COMM PLUS was developed using three
        antennas:  Antenna 1 being a random wire antenna; Antenna 2 being
        a sloper; and the third being a vertical VHF antenna.  The user can
        easily now modify the database provided to accommodate only one
        antenna. 

        If the user desires to exclusively use the "Antenna 1" connection
        on the Drake R8 then start up DX-COMM PLUS by typing "DX" at the
        Dos prompt.  From within the Database Display Screen press "Q" to
        go to the Database Menu Screen.  Now press "*" as the key (Shift
        and the number "8" key on most computer keyboards).  This will
        bring up the message "Modify Database to Antenna 1 (Y/n)?".  Any
        entry other than a "Y" will return the user back to the "Enter
        Command:" line on the computer monitor.  Press "Y".  DX-COMM PLUS
        will now proceed to look at each record in the DX-COMM PLUS's
        database to determine if the record is set up for Antenna 2.  If it
        finds an "Antenna 2" designation it will automatically change this
        to "Antenna 1".  It will leave untouched any reference to the
        "Converter" antenna.  

        Upon successful completion of the conversion of the database, the
        "Enter Command" line will reappear in the Database Menu Screen. 
        You are now ready to return to the Database Display Screen knowing
        that all records have been reconfigured for use with just Antenna
        1.

        Similarly, if you are intending to use only "Antenna 2" on the
        Drake R8, the database may be reconfigured for this in the same
        manner as described for "Antenna 1" except now press "&" (shift and
        the number "7" key on most computer keyboards) from within the
        Database Menu Screen.
         
                                      -61-


        APPENDIX E: TROUBLESHOOTING

      SYMPTOM                  POSSIBLE CAUSE                   FIX
_____________________________________________________________________________
Database Screen display     When swapping between     Press "s" followed
no records                  databases or sorts DX-    by "a" 
                            Comm becomes confused
                            as to whether database
                            files are sa", "sp" or
                            "ua", "ub". 
 
____________________________________________________________________________
DX-COMM Drake Parameter     Wrong serial port         Reconfigure prog.
Display not properly        identified in config-     by typing "s" and
displaying                  uration.                  "e" and then                 
                                                      change serial port
                                                      number.

                            Serial cable not          Check cables
                            properly connected
 _____________________________________________________________________________
Database records for        Radio Station field of    Edit one of the 
same broadcaster are        individual records not    records and cap-
out of order after a        exactly the same due to   ture R.Station
sort                        perhaps an extra space    field and then
                            following the end of      perform global
                            the field in one          edit/import the
                            record ompared to         field into all
                            another.                  similar records
_____________________________________________________________________________
After returning to          DX-COMM for a number of   Simply press "]"
the Database Display        operations tries to       or "[" until the
Screen the red cursor       retain the last pos-      cursor appears.
is not seen.                ition of the cursor rel-
                            ative to the total re-                    
                            cords for that hour.  If  
                            for some reason the total 
                            records for that hour are
                            less the cursor may be-
                            come invisible.
_____________________________________________________________________________
When displaying RTTY        This may happen on        No solution at
and CW frequencies the      very infrequent occa-     this time.
display is off by           sions. It is due to a
.00001 mhz.                 precision rounding calc-
                            calculation error in cor-
                            recting for center freq.
                            offset.

_____________________________________________________________________________
When operating from         Wrong serial port sel-    Reconfigure prog.
within the TNC window       ected                     setup with right
DX-COMM has difficulty                                serial port.
communicating with the
TNC.                         
                            Wrong baud rate, par-     For example,
                            ity. Reconfigure port's   remove ",RS"
                            selected control codes    control code 
                                                      in setup file
                               -62-


 
  SYMPTOM                   POSSIBLE CAUSE                  FIX
_____________________________________________________________________________
Can't communicate with     Baud rate, TNC serial      Change port 
TNC                        port, or control codes     designation, baud
                           not correct                rate or remove
                                                      ",RS" control
                                                      code in config-
                                                      uration file.

                                      -63-


        APPENDIX F: DX-COMM COMMAND SUMMARY

        F-1: DATABASE DISPLAY SCREEN                                         
        COMMAND                 WHAT IT DOES
        A     ............... used to call up the Fileinput Screen to
                               add new records to the database
        B     ............... used to globally import specified fields   
                               into tagged records
        C     ............... access the Command Screen
        D     ............... used to delete tagged records
        E     ............... used to in conjunction with record number
                               to call up the Edit Screen to edit or      
                               highlight fields in a record
        F     ............... used to enter solar flux values
        G     ............... used to access the 24 hour HF propagation
                               prediction program within DX-COMM PLUS
    Home or "H" ............. moves to first record in database display
                               for the mode selected
    End or "Z" .............. moves to last record in database display
                               for mode selected
    PgUP or "J" ............. moves database display up 8 records        
    PgDwn or "K" ............ moves database display down 8 records 
              .............. decrements frequency display by F2 amount  
               .............. increments frequency display by F2 amount
      or "P"  .............. moves database display list up one record
      or "O"  .............. moves database display list dwn one record 
        L     ............... used in conjunction with index number to
                              upload a record to the Drake
     <ENTER>   .............. used to upload record highlighted by red   
                               cursor to the Drake
        M     ............... used to sequentially upload the record
                               highlighted by the cursor into the         
                               Drake's memory channel  
        N     ............... used to access the TNC Window Screen
        Q     ............... Access the Database Menu Screen
        R     ............... used to download from the Drake the        
                               frequency presently being displayed, and   
                               all associated parameters 
        T     ............... used to select a particular UTC time or to
                               have the display look ahead up to 3 hours  
        W     ............... used to switch between display of
                               "REMARKS" and "S   DAYS   MUF-LUF"
        X     ............... used to display additional commands
        ]     ............... used to move the red cursor up
        [     ............... used to move the red cursor down
     @ or !   ............... In FST, SFT, STF modes increments records
                               up or down 100 records at time
       SA     ............... used to display Shortwave Active 
                               frequencies
       SI     ............... used to display Shortwave Inactive freq.
                                      -64-


        COMMAND                 WHAT IT DOES
       SB     ............... used to display both Shortwave Active and
                               Inactive frequencies
       UA     ............... used to display Utility Active frequencies
       UI     ............... used to display Utility Inactive           
                               frequencies
       UB     ............... used to display both Utility Active and 
                               Inactive frequencies
       SP     ............... used to display "SPECIAL" frequencies
       SE     ............... access the SETUP configuration routine
       F2     ............... used to set the increment in khz to        
                               increment/decrement the Drake freq.        
                               when pressing the left or right arrow key
       F3     ............... Toggle the database for subsequent resort-
                               ing in order of TSF, TFS, FST, SFT, STF
       F8     ............... Toggles VFO A or B
       F9     ............... Activates the Center Frequency offset      
                               feature for RTTY and CW signals 
      F10     ............... Temporary exit to DOS
       ^A     ............... Tags Record for Alert Status and activates
                               Alert status
       ^C     ............... Clears/Aborts Alert Status
       ^P     ............... Initiates the ACR feature
       ^Q     ............... Quick Exit
       ^R     ............... used to preview tagged ACR records
       ^S     ............... used to scan tagged records and pause for
                               specified number of seconds in COM.DAT on
                               each record 
       ^T     ............... used to tag records
       ^U     ............... used to untag all records
       ^V     ............... used to tag records for Audio Cassette
                               Recording (ACR) purposes
       ^Y     ............... used to toggle the serial comport in the
                               locked open mode, and to reclose the port
       ^Z     ............... Swap Databases 
       ^[     ............... Copy tagged records from one database to
                               other database 

        F-2: DATABASE MENU SCREEN

        COMMAND                  WHAT IT DOES
        A      ............... Add records to database
        F      ............... Find record in database using field        
                                identifiers and search strings
        I      ............... Import TRS database into DX-COMM PLUS
        P      ............... Print database records 
        Q      ............... Proceed to Command Screen
        S      ............... Sort and index database
        *      ............... Convert database records to Antenna 1      
                                operation only
        &      ............... Convert database records to Antenna 2      
                                operation only
                                      -65-


        F-3: COMMAND SCREEN

        COMMAND                 WHAT IT DOES
       AF     ............... Set gain control to Fast
       AS     ............... Set gain control to slow
       AO     ............... Set gain control to off
       A1     ............... Select Antenna 1
       A2     ............... Select Antenna 2
       AC     ............... Select VHF Antenna
       BW     ............... Select Wide Noise Blanker
       BN     ............... Select Narrow Noise Blanker
       BF     ............... Turn Noise Blanker off
       ST     ............... Step change the frequency display
    Fxxxxxxxx ............... Set Drake frequency to xxxxxxxx
       SO     ............... Set Synchronous Detector on
       SF     ............... Set Synchronous Detector off
       G+     ............... Set RF preamp on
       GO     ............... Turn RF preamp off
       G-     ............... Turn RF attenuator on
       NO     ............... Turn Notch Filter on
       NF     ............... Turn Notch Filter off
       AM     ............... Select AM mode
       FM     ............... Select FM mode
      RTTY    ............... Select RTTY mode
       CW     ............... Select CW mode
      LSB     ............... Select LSB mode
      USB     ............... Select USB mode
       VA     ............... Select VFO A
       VB     ............... Select VFO B
      0.5     ............... Select 0.5 Bandwidth Filter
      1.8     ............... Select 1.8 Bandwidth Filter
      2.3     ............... Select 2.3 Bandwidth Filter
      4.0     ............... Select 4.0 Bandwidth Filter
      6.0     ............... Select 6.0 Bandwidth Filter
        C     ............... Select Memory mode
    Cx (x=0 to 99) .......... Select Memory Channel x
       PR     ............... Program Memory Channel by placing
                               current freq displayed in Mem. channel 
       PO     ............... Power On
       PF     ............... Power Off
       TO     ............... Timer Relay on
       TF     ............... Timer Relay off
        U     ............... Increment up frequency .01, .1 or 1 khz 
                               according to Step; increment up one    
                            channel if in memory mode
        D     ............... Decrement down frequency .01, .1 or 1
                               khz according to Step; decrement down
                               one channel if in memory mode
                                      -66-  


        COMMAND                 WHAT IT DOES
        S (x=1-3,4-5) ........ Scan Selection: 
                                 1-3 MODES:     1- scans all memory channels
                                                2- scans all unlocked memory
                                                   channels within user       
                                                   sel. list of blocks
                                                3- scans from VFO A to VFO B
                                 4-6 MODES:     4- stops scan at first        
                                                   carrier detected           
                                                5- stops at detected                                                 
                                                   carrier for 5 seconds      
                                                   then resumes
                                                6- Stops at detected carrier  
                                                   until carrier drops for    
                                                   5 sec., then resumes

        SC     ............... Scan start/stop (toggles)

        ADDITIONAL DRAKE COMMANDS (Refer To Drake R8 Manual)
        RF     ............... Report Frequency
       RFR     ............... Report frequency, repeat every 5 seconds
        RM     ............... Report Mode
       RMR     ............... Report Mode, repeat every 5 seconds
        RC     ............... Report Channel
       RCR     ............... Report Channel, repeat every 5 seconds
        RA     ............... Report All - reports 25 character Drake
                                datastring containing channel, frequency,   
                                and all parameters
       RAR     ............... Repeat Report All every 5 seconds
        RS     ............... Report Stop

        ADDITIONAL DX-COMM PLUS PROGRAM COMMANDS
              ............... decrements frequency display by Database
                                Display F2 amount
               ............... increments frequency display by Database                        
                                Display F2 amount
        F8     ............... Toggles VFO A or B
        ^Y     ............... used to toggle the serial comport in the
                                locked open mode, and to reclose the port
         Q     ............... used to quit DX-COMM PLUS and return to DOS
         S     ............... used to access the DATABASE MENU screen
         L     ............... used to access the DATABASE DISPLAY screen
    
                                      -67-


        F-4: TNC WINDOW     
        COMMAND                  WHAT IT DOES
        F4     ............... Temporarily sends ^S to TNC and places  
                                cursor at Command Line to communicate
                                with Drake.              

        COMMANDS ACCESSIBLE AFTER USING F4
        Note: All the commands identified in Appendix F-3 are             
              accessible as well as the following:

      L#####   ............... Load recordnumber - by pressing L and
                                the recordnumber one uploads database
                                record to Drake
      STEP###  ............... Sets the amount of increment/decrement
                                in frequency when subsequently J or K
                                are pressed
        ^Y     ............... toggles the serial comport in the lock-
                                ed open mode, & to reclose the port
         J     ............... Increments frequency up by ### as set
                                by STEP entry
         K     ............... Decrements frequency down by ### as set
                                by STEP entry
        F6     ............... Increments frequency up 10 times what
                                "U" command sets for frequency on R8                            
        F7     ............... Decrements frequency down 10 times what
                                "D" command sets for frequency on R8   
        R     ...............  Returns cursor back to TNC WINDOW and
                                sends ^Q to TNC

        COMMANDS AVAILABLE WITHIN TNC WINDOW
        Note:  All the command sets associated with the TNC will be       
               accepted and the following special commands:

        F5     ............... Starts Buffer display - sends ^S to TNC 
                                temporily halting data transmission
     Space Bar   ............. steps one line thru buffer display
       Esc     ............... Allows user to leave buffer display
                                back to Communication with TNC -
                                issues ^Q to TNC
        ^A     ............... Clears Buffer memory
        ^D     ............... Opens a file whose name is designated
                                by user to send all TNC Window screen  
                                information to.            
        ^E     ............... Closes the file opened by ^D
       TAB     ............... Turns printer on to printout the same   
                                information that is being displayed on 
                                the screen
      BKSP     ............... Pressing the Backspace key turns the    
                                printer off
        ^\     ............... Quit TNC WINDOW and return to DATABASE  
                                DISPLAY SCREEN
       F8      ............... Select VFO A or VFO B
  
                                      -68-


        F-5: EDIT RECORD SCREEN  

        COMMAND                 WHAT IT DOES
        F1     .............. When in first character position of        
                               Frequency field, retrieve Drake           
                               frequency and other paramters off radio.  
                               Requires pressing F1 followed by <ENTER> 
    <ENTER>   ............... Press enter key to step through record     
                               fields
       TAB    ............... Press Tab key when if first character      
                               position of a field to highlight that     
                               field for input into another record.      
                               Used in conjunction with DATABASE         
                               DISPLAY SCREEN Global Edit feature, and   
                               Add record (I)mport feature
         Q    ............... Command Available when Find/Edit/ Delete   
                               feature from DATABASE MENU SCREEN         
                               accessed. When at top of screen in        
                               command line, the search for records      
                               matching a search string can be aborted. 
            
        F-6: ADD RECORD SCREEN   

        COMMAND                  WHAT IT DOES
        F1   ................ When in first character position of        
                               Frequency field, retrieve Drake           
                               frequency and other paramters off radio.  
                               Requires pressing F1 followed by <ENTER> 
    <ENTER>  ................ Press enter key to step through record     
                               fields
         I   ................ Pressed at start of Add record feature     
                               when at command line.  Imports            
                               previously highlighted fields from        
                               edited record.
       ESC   ................ Escape key - by pressing escape key from   
                               any field's first character position      
                               the ADD RECORD SCREEN is closed and the   
                               particular data record entry aborted.

                                      -69-


        F-7: PROPAGATION MENU SCREEN       

        COMMAND                 WHAT IT DOES
       F4   ................ Temporarily sends ^S to TNC and places  
        ]   ................ moves red cursor bar up
        [   ................ moves red cursor bar down
        F   ................ used to set alternative solar flux
                              levels to that set in DATABASE DISPLAY
                              SCREEN
        D   ................ used to set alternative dates to base   
                              propagation calculations upon
        R   ................ Allows user to temporarily modify the
                              receiver latitude and longitude
                              without affecting the DX-COMM PLUS's
                              program configuration file
        T   ................ Allows user to specify a transmitter
                              latitude and longitude to determine
                              propagation conditions from that
                              transmitter site to the receiver
                              coordinates specified by pressing "R"
                              above.
        S   ................ Allows a 25 character name to be
                              assigned to the transmitter
                              coordinates specified by pressing "T"
        P   ................ Allows the coordinates entered by
                              pressing R, T, and name from pressing
                              S to be reviewed.  If OK the user can
                              press "Y" to generate plot.
        L   ................ Used to toggle the program into
                              performing longpath calculations
   <ENTER>  ................ Used to generate plot for region        
                              highlighted by red cursor 
      ESC   ................ Used to return to the PROPAGATION MENU  
                              SCREEN when within the Plot screen
        Q   ................ Used to return to the DATABASE DISPLAY  
                              SCREEN


                                      -70-


        APPENDIX G: ALTERNATIVE TERMINAL HAND-      
                    SHAKING MODES

        In the early development of DX-COMM, a number of "handshaking"
        problems between the PC and the Drake R8 were reported.  Much of
        this was corrected by establishing the appropriate hardware
        protocol of RTS/CTS handshaking.  However, with the wide variety of
        PC's in use a protocol modification program is provided to allow
        the user to establish the protocol/mode that works best for his/her
        particular application.  A total of 10 protocols are available
        along with the ability to modify the control parameters of the
        comport (RTS detection time, CTS, etc. - refer to your GW-BASIC
        book that came with your computer for the "OPEN COM" command.

        To access this program return to the DOS prompt either before
        starting DX-COMM PLUS or after starting the program using the DOS
        SHELL Command (Function F10 in the Database Menu Screen).  At the
        DOS prompt type "ALT_TERM.EXE".

        The program will clear the screen and ask you to type the
        protocol/mode you desire.  The program disk is configured for  mode
        "7".  Each mode is described below:


                            PROTOCOL DESCRIPTION
        MODE  PACING  WAIT LOOP  BREAK DET.  CTS  ERROR CHK  CHAR FLUSH
        0      x                                     x  
        1      x       short                  x
        2      x     moderate                 x
        3      x       long                   x
        4              short      x           x
        5            moderate     x           x
        6              long       x           x
        7            short/sec.   x           x                   x
        8          moderate/sec.  x           x                   x
        9            long/sec.    x           x                   x

        The above headings have the following meaning:

        o    PACING means that the characters are sent out to the Drake
             after be processed through a timing/delay loop.

        o    WAIT LOOP means that a timing loop is employed in the
             receive buffer of the program which times out if no
             characters are received after the user prescribed number of
             seconds or after a loop executes a fixed number of
             iterations.  The description "Short", "Moderate", or "Long"
             refer to the fixed number of loops before the loop times
             out.  From a users perspective, the delay loop is provided
             to allow the Drake R8 to place information into DX-COMM
                                      -71-


             Plus's communication buffer before DX-COMM PLUS proceeds
             onto the next program execution step.  Obviously, for a
             given delay loop, the actual time in seconds that the loop
             executes is a function of the computer's clock speed and the
             CPU used.  In modes 7-9 the term "sec." refers to the number
             of seconds configured by the user (in the step identified
             below) as a limit condition to the delay loop so that
             regardless on what PC is being used, the loop cannot execute
             beyond the seconds specified.

        o    BREAK DET. means that the program reads the com port line     
             status register (port 3FD/2FD) to determine if a break            
             signal has been detected.

        o    CTS means that the program reads the com port's modem status
             register to determine if a CTS signal has been received
             before allowing a new character to be sent to the Drake.

        o    ERROR CHK means that the program employs a error checking
             outine that determines for the Report All command whether
             the correct number of characters have been received and
             whether they are sequenced in the appropriate manner.  If an
             error is detected, the program attempts to reconstruct the
             Report All string and if still unsuccessful, writes to the
             Drake one more time to attempt receive this information
             correctly. 

        o    CHAR FLUSH means that the program strips the Report All         
             string of all Line Feeds.

        Upon entering the desired Mode (0-9) the ALT_TERM program will
        proceed to request you enter a "TIME DELAY".  This is the number of
        seconds that is used in the WAIT LOOP described above in MODES 7-9
        before a timeout signal occurs.  The entry may be 0 to 9 seconds. 
        The default is 1 second.  

        The final step in the ALT_TERM program is to identify the CTRL
        CONFIG parameters.  DX-COMM PLUS has as the default ",DS150".  This
        setting tells DX-COMM PLUS that if it is not able to detect a DATA
        SET READY signal from the DRAKE in 150 miliseconds that it will
        reclose the comport.  This is useful if for example you did not
        have the correct comport selected or you are using a switch box to
        swap your computer com port for other applications and accidently
        forget to swap it back to the Drake R8.  If you didn't set ",DS150"
        and just left this blank, the computer would wait 10 seconds before
        issuing a timeout error - thus making DX-COMM PLUS appear very slow
        in loading the program under such a condition.

                                      -72-


        APPENDIX H: WINDOWS USERS

        DX-COMM PLUS is a DOS based program.  However, it may be run in a
        WINDOWS environment as a DOS application.  There are a number of
        considerations that the user needs to understand. 

        Unlike some other programs written for the Drake R8, DX-COMM PLUS
        does not, unless selected to do so, take away manual control of the
        Drake from the user.  For example, at any time, other than a direct
        upload or download operation, the user could turn the Drake's
        tuning knob and adjust frequency or use the Drake's panel controls
        to change a setting if so desired.  However, this comes at a slight
        price.  

        To accomplish this requires opening and closing the COM Port for
        each separate upload/download operation.  However, opening the com
        port under the WINDOWs enviroment takes considerably longer than it
        does under DOS.  DX-COMM PLUS has been re-designed from its
        shareware predecessor to minimize the opening/closing of the COM
        port as infrequently as possible compared to that of the prior
        shareware versions of program.  But regardless, operation of DX-
        COMM PLUS in the WINDOWs environment is slightly slower than when
        operating in the DOS environment.  The user may compensate for
        this, however, by toggling the "LOCK" feature with the keys ^Y
        (Ctrl Y) which locks the serial comport open until selected
        otherwise.  This speeds up the upload/download of information to
        and from the Drake significantly.

        Other steps may also be taken to optimize the operation of DX-COMM
        PLUS in the WINDOWs environment.  For example, one could set up the
        program to have exclusive, or as near exclusive, time slice
        operation when operating as the foreground application in WINDOWS. 
        Also, my own observation is that the program seems to operate more
        quickly when running it in the FULL SCREEN mode as opposed to a
        WINDOWS mode.  I suspect the reason for this is that in the WINDOWs
        mode the screen is constantly being updated as a graphics image,
        whereas, when displaying the program as FULL SCREEN the display is
        in the text mode.

        Also, running DX-COMM PLUS in the FULL SCREEN MODE is a must for
        those who are going to use the program with a TNC.  In the WINDOWs
        display mode the keyboard will lock up. 



                                      -73-


        APPENDIX I: END USER SHAREWARE REGISTRATION
                    & LICENSE AGREEEMENT

        Notice to End User:  Carefully read the following terms and
        conditions.  Use of the software DX-COMM Plus constitutes your
        acceptance of these terms and conditions and agreement to abide by
        them. In return for acquiring a license to use DX-COMM PLUS and
        documentation contained in this package, and for acquiring the
        accompanying documentation, you, the user agree as follows:

        1)   EBS Consultants grants you a nonexclusive, personal license:
             (a) to use DX-COMM PLUS as ShareWare, (b) Continued use
             beyond an initial trial period requires you to register with
             EBS Consultants. You may copy the software for purposes of
             distributing it as ShareWare or for  purposes of installing
             it on your computer, backup purposes, and archival purposes. 
             As a registered user, you may assign your rights to a third
             party provided the third party agrees in writing to be bound
             by the terms of this Agreement.  

        2)   You acknowledge that DX-COMM PLUS is copyrighted by Eric B.
             Svenson, Jr. and is proprietary to him.  Eric B. Svenson,
             Jr./EBS Consultants retain title and ownership of the DX-
             COMM PLUS.                                                

        3)   You may not modify, alter, translate, disassemble or
             decompile DX-COMM PLUS or documentation or any copy, in
             whole or in part.

        4)   To become a registered user of DX-COMM Plus, please send a
             check or money order for $39.95 to:

                             EBS Consultants                   
                             PO Box 1361
                             Summit, New Jersey  07901

             Upon becoming a registered user you will receive a copy of
             the printed manual, and you will be notified of additional
             upgrades to the program.  You will also be entitled to one
             free upgrade to the program by providing EBS Consultants
             with any suggestions for improving the program.
 
        5)   In no event shall EBS Consultants be liable to you for any
             consequential, special, incidental, or indirect damages of
             any kind arising out of the use of the DX-COMM PLUS
             software. 
               
        6)   You acknowledge and agree that you have read this agreement,
             understand it, and that it is the entire agreement between
             EBS Consultants and you which supersedes any prior
             agreement, whether written or oral relating to the subject
             matter of this agreement.  This agreement may only be
             modified by a written document signed by Eric B. Svenson,
             Jr./EBS Consultants.
                                      -74-


        7)   If you have any questions pertaining to this agreement or if
             you need to ask any questions pertaining to DX-COMM PLUS
             please contact:

                                      EBS Consultants
                                      PO Box 1361
                                      Summit, New Jersey 07901
                                      (908) 522-8941
 








        






