[amsat-bb] Re: [Bulk] Re: Offset Correction in SatPC32
Michael Hatzakis Jr MD
mail at hatzakis.net
Tue Nov 28 13:05:27 PST 2006
Ok, I am on FO-29 right now and I see what I did wrong. I quit and came
back and, as you said, it came up with an offset of '0' but with the correct
I needed to use Change/Store: Rx/Tx Freq data" instead of "Uplink
Calibration". What exactly does "Uplink Calibration" do differently?
From: Erich Eichmann [mailto:erich.eichmann at t-online.de]
Sent: Tuesday, November 28, 2006 11:08 AM
To: Michael Hatzakis Jr MD
Cc: AMSAT-BB at amsat.org
Subject: [Bulk] Re: [amsat-bb] Offset Correction in SatPC32
for fine-tuning of the uplink frequency it's best to use the "Upl.Calibr."
controls in the menu "CAT".
Once you hear your downlink signal from - say FO-29 - with the correct
audio pitch click the button "Change/Store Data File".
In the window that opens click on "Store ....Uplink Calibration". While
doing this you may watch the frequency list in the menu CAT. You will see
that the uplink value on the highlighted line will change accordingly (and
be saved) and the correction value above the SatPC32 frequency window will
be re-set to 0.
The uplink frequency calibration function works only with SSB sats. With FM
sats the nominal frequencies can be left unchanged. If a change is required
it can manually be done in the (text) file "Doppler.SQF".
73s, Erich, DK1TB
----- Original Message -----
From: "Michael Hatzakis Jr MD" <mail at hatzakis.net>
To: <AMSAT-BB at amsat.org>
Cc: "'Erich Eichmann'" <erich.eichmann at t-online.de>
Sent: Tuesday, November 28, 2006 6:48 PM
Subject: [amsat-bb] Offset Correction in SatPC32
> I asked this before, but I probably wasn't very clear. I just installed
> SatPC32 and really like it. it is a very well written package.
> One feature I really like is that it is possible to fine-tune adjust the
> offset between uplink and downlink frequency. This is a very useful tool
> as, for me; I find that I need about +2kHz correction on my uplink to
> FO-29 right onto my downlink frequency. Problem is, once you close the
> program, this offset is lost. Is there a way to save that offset in the
> Doppler file or somewhere else so I don't need to keep entering it?
> Michael K3MH
> Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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