                                ADDENDUM
                                    
ADDITIONAL NOTES:

1)   IF you have only one Antenna, after following the instructions in
     the manual under the section INSTALLATION AND PROGRAM
     CONFIGURATION,  read APPENDIX D: MODIFYING THE DATABASE TO USE
     ONLY ONE ANTENNA.

2)   If you start DX-COMM PLUS and the Drake R8 is not powered on, a
     "TIMEOUT" message will appear on the screen for a moment and then
     be erased.  The purpose of this message is to indicate to the user
     that the DX-COMM PLUS attempted to read data from the Drake and no
     information appeared on the RS232 port over the prescribed read
     period.  

3)   For DX-COMM PLUS to work properly you should have no TSR (Terminate
     and Stay Resident) programs residing in the DOS background.  DX-
     COMM PLUS, with the as supplied 1800 records, needs approximately
     500 to 550k of free memory (as measured prior to loading the
     software) to run properly.  The symptom of insufficient memory will
     be an "End-of-List" message in the Database Display Screen with no
     data records displayed.

4)   Do not attempt to run DX-COMM PLUS by simply setting the path.  
     Always run the program by executing it from within the
     directory/sub-directory in which it resides.  Failure to do so may
     result in lost datarecords.

5)   When adding records to the database, be careful not to enter "2400"
     in the End UTC field. Doing so confuses DX-COMM PLUS and could
     lock-up the program.  Enter "0000" for midnight UTC.
 
6)   If users experience a problem with the DX-COMM PLUS's Drake
     parameter display where the only character displayed is "1" under
     ANT, and the Drake R8 power is on and the correct com port has been
     selected as prescribed in the manual's INSTALLATION AND PROGRAM
     CONFIGURATION section, then read APPENDIX G: ALTERNATIVE TERMINAL
     HANDSHAKING MODES.  After doing so perform the steps below.

     Step 1: Press Function 10 (F10).  This will activate the Dos Shell
     command temporarily exiting the program to the DOS PROMPT.

     Step 2: At the DOS prompt type ALT_TERM and press <ENTER>.  This
     will access the ALT_TERM.EXE program described in Appendix G.  

     Step 3: Change the program from Mode 8 to Mode 9 by typing "9". 
     Upon typing "9" within a second or less the program will accept the
     typed entry and will display "Time Delay=1".

     Step 4: Keep the "Time Delay" at 1 second by simply pressing
     <ENTER>.  The program will now display "Ctrl Signal= ,DS150". 
     Simply press <ENTER>.  This will return the DOS PROMPT.

     Step 5: At the DOS prompt type EXIT and press <ENTER>.  This will
     return you back within the DATABASE DISPLAY Screen of DX-COMM PLUS.

     If you have the com port and the other configuration parameters
     properly set, and the Drake R8 is on, you should see the Drake
     parameters displayed across the top of the screen.  If they still
     do not display go back to Steps 1-3.  Now simply press <ENTER> to
     keep the mode as "9". At, Step 4 type in a time delay of "3"
     seconds.  Upon doing so, within a second or less the program will
     advance to the statement "Ctrl Signal=,DS150".  Simply press
     <ENTER> and return to DX-COMM PLUS by typing EXIT at the DOS
     PROMPT.

     If the above does not work please give us a call at the
     telephone number listed below.

CORRECTIONS TO MANUAL:

1)   Correction: page 14, first full paragraph, fourth sentence.  The
     reader is referred to "...page 13 concerning center frequency
     offsets..."  This is incorrect.  This should refer the reader to
     the paragraph on the same page 14 that begins, "...The next entry
     requires you to identify .. active broadcast frequencies..."

2)   Addition: Page 17, top of page.  The user is referred to Appendix
     E for troubleshooting  In addition, the reader should refer to
     Appendix G and Item (2) in this Addendum.

3)   Addition: Page 39 under the paragraph that addresses finding
     Frequency data.  It is important, for example, when searching the
     database for the frequency 5.97500 Mhz that one type this in as  
     < 5.975> with a space preceding the number "5".

4)   Correction: Page 70, 3rd paragraph.  The sentence, "The program
     disk is configured for mode 7", should instead read, "The program
     disk is configured for mode 8". 

YOUR COMMENTS AND FEEDBACK ENTITLE YOU TO ONE FREE UPGRADE
OF THIS SOFTWARE WHEN IT IS RELEASED:

While considerable time and effort went in to developing DX-COMM PLUS
this doesn't mean that there isn't room for improvement.  Many of the
features provided are a result of the author's own personal preferences
(colors, keystroke schemes, etc.).  The author encourages you to provide
comments and feedback as to the additional features you would like in
subsequent releases of the software.  If you purchased DX-COMM PLUS and
provide EBS Consultants feedback, we guarantee that you will be given
one free upgrade of the program when a subsequent release is developed.

DO YOU NEED TECHNICAL HELP? Call (908) 522-8941 
                            M-F:6pm-9pm EST; S&S:9am - 9pm EST

8/14/93
