[amsat-bb] SatPC32 Doppler problem

George Henry ka3hsw at att.net
Sun Oct 23 04:23:30 UTC 2016

How accurate is the time on your computer?  If it's not dead on, that can 
mess with your doppler correction...

George, KA3HSW

----- Original Message ----- 
From: "Mark Johns via AMSAT-BB" <amsat-bb at amsat.org>
To: "AMSAT BB" <amsat-bb at amsat.org>
Sent: Saturday, October 22, 2016 3:32 PM
Subject: [amsat-bb] SatPC32 Doppler problem

> For some reason, my SatPC32 has stopped correctly compensating for Doppler 
> shift on FO-29. I'm continually having to "find myself" all over the 
> passband, making adjustments throughout the pass, just like the old days 
> when everything was manual.
> I've updated the Keps. I marked the uplink and downlink freqs at time of 
> closest approach on a high-elevation pass, and re-edited my Doppler.SQF 
> with those numbers.
> SatPC32 is talking to the rig, and it does make regular changes to both 
> uplink and downlink frequencies -- they just happen not to be correct.
> I'm stumped! Any thoughts?-- 
> Mark D. Johns, KØMDJ
> Decorah, Iowa USA  EN43
> -----------------------------------------------

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