I saw that with a USB serial port which wasn't able to keep up with the data. I switched to a "real" PCI serial port, and that cleared it up. There is also a CAT delay parameter in SatPC32 which is worth exploring.
73s,
Alan WA4SCA
<-----Original Message----- <From: AMSAT-BB [mailto:[email protected]] On Behalf Of Tom Schuessler <Sent: Thursday, November 03, 2016 8:39 PM <To: [email protected] <Subject: [amsat-bb] SatPC32 Ver12.8c and CAT Operating < <Fred, < < < <I will tell you that I get at times some similar types of conditions with <SatPC32 12.8C and my FT847. The radio will flip USB modes on the main band <and sometimes the transmit sub band while I am tuning the passband. I have <assumed that this might be a feature of tuning too fast and the data stream <getting confused. I can see this happening whether I set the radio/Com port <to 9600 or 57.6 but think it is a bit more prone at 57.6 Kb/s. < < < <Any body have suggestions? < < < <Tom Schuessler < <N5HYP < <[email protected] < < < <_______________________________________________________________ < < < < < <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/261186601463cable 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-10,145900.0,435100.0,USB,LSB,REV,0,0 < <AO-73,145960,435140,USB,LSB,REV,0,0,Voice U/V AO-73,145935.0,,USB,,,,TLM <........ < < < <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. < <Regards, < <Fred Castello, KF4FC < <Fishersville, VA < < < <_______________________________________________ <Sent via [email protected]. AMSAT-NA makes this open forum available <to all interested persons worldwide without requiring membership. Opinions expressed <are solely those of the author, and do not reflect the official views of AMSAT-NA. <Not an AMSAT-NA member? Join now to support the amateur satellite program! <Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb