Hi Jeff,
In SatPC32ISS menu CAT set the interval to - say - 10. Then SatPC32ISS will update the frequencies at the radio for Doppler correction whenever the Doppler shift changed by 10 Hz or more.

Unfortunately, SatPC32ISS adopts the FM interval value from SatPC32 and uses it for FM, but also for SSB. SatPC32ISS makes no difference in this respect. If  the interval is changed in SatPC32ISS, this value also appears in reverse in SatPC32 as the FM vallue.

When I introduced SatPC32ISS 15 (?) years ago it could only be used with the 2m FM repeater on the ISS.
That will be the reason I set it up back then so that SatPC32ISS always uses the interval value that SatPC32 uses for FM and vice versa.

So, I suppose your interval for SatPC32ISS  will be much too high and that will be the reason that you have to adjust the drift

I hope I can soon upload a revised SatPC32ISS that doesn't share the interval with SatPC32.

73s, Erich, DK1TB


Am 20.11.2022 um 15:17 schrieb jeff griffin:

For what it's worth I also see a slight frequency  drift while working GreenCube.  I have to monitor the D/L and adjust the drift as I work the sat. Not a big deal to me. I don't see this with the dozen or so other sats that I actively work. I'm also using WIN11 and SatPC32 and SatPC32ISS ver  12.10.

73 Jeff kb2m


On 11/20/2022 12:45 AM, Calvin McDonald wrote:
Is anyone successfully using SatPC32 / SatPC32ISS with Windows 11?
I'm trying to track (position and Doppler) GreenCube with SatPC32ISS and I'm experiencing a slow frequency drift that takes me out of alignment with the bird within just a minute or so after restarting SatPC32ISS.  Both V12.9 and V12.10 act the same.  Keps are updated.  If not a Win11 compatibility problem, anyone have any ideas what it might be?  Transceiver is a IC9700.
Thanks - N7AY

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