[amsat-bb] SatPC32 with IC7000 flipping back and forth

Erich Eichmann erich.eichmann at t-online.de
Mon Jul 24 07:16:41 UTC 2017

the automatic Doppler correction of SatPC32 updates the radio 
frequencies (both, uplink and downlink by default)  when the Doppler 
shift of the higher band changed by a certain amount of Hertz (interval, 
selectable in menu CAT). To do so the program needs to swap the VFOs for 
a few milliseconds because only the frequency of the main band VFO can 
be changed via CAT command. BTW: This happens only while the radio is in 
RX mode. During tX mode the frequency corrections are delayed.
73s, Erich, DK1TB

Am 23.07.2017 um 23:56 schrieb mvivona--- via AMSAT-BB:
> Hi,
> I have SatPC32 connected to my IC-7000 with a USB CAT cable, Win-7.I've got it controlling the radio except it has one problem. If I select lets say AO-73, It puts the radio in Split mode and enters 145.96 in the RX side and 435.14 in the TX side. That is perfect, however about ever 4 seconds it flips the frequencies putting 435.14 in the RX side and 145.96 in the TX side. It only stays there for about a nano second and flips back. It keeps doing this continuously. I have tried all the CAT delays, and intervals with no success.
> Cant seem to find anything in the help files about this. What am I messing?
> thanks,
> Michael KC4ZVAEL98
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