[amsat-bb] SatPC32 Ver12.8c and CAT Operating

Fred Castello fredcastello at gmail.com
Thu Nov 3 20:30:32 UTC 2016

Hi folks,

I am trying to get back into the satellites and have a Kenwood TS-790A
which I am using with SatPC32 Ver12.8c.  I am using THIS
<http://www.ebay.com/itm/261186601463>cable for CAT control (after research
it seemed to be one of the best and reliable cables for the purpose).

During the operation of the radio during a pass using AO-85 I have found
that SatPC32 keeps switching the mode from FM to USB.  It stopped doing
that when I disconnected the USB to accessory plug but of course it stopped
correcting for doppler as well. When I investigated this I noticed that the
AO-85 line in the DOPPLER.SQF file seemed to be missing a comma, see below:

; For Hints look at the end of this file.
; Do not remove or modify these first
; 3 lines of the file, starting with ';'!
AO-85,145980,435180FM,FM,Nor,0,0,Voice U/V
AO-73,145960,435140,USB,LSB,REV,0,0,Voice U/V

I corrected that and saved it and restarted the computer and the program.
It continues to do it and I can't figure out why.  So, on this radio there
is a "Main" channel which is on 70 cm which I transmit on and there is a
"Sub" channel which is on 2 meters which I receive on.  The "Main" channel
tracks the doppler correctly and remains on FM but the "Sub" tracks the
frequency correctly but keeps switching to USB.  Does anyone have any
thoughts on how to correct this or am I doing something wrong?
Thanks so much for your time.
Fred Castello, KF4FC
Fishersville, VA

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