[amsat-bb] Uplink Calibration in SatPC32

[Michael Walker]

Hi Alex

Can you describe a bit more on how you do your calibration?

It works for me, but I had to do it for each satellite and then hit
"Change/Store Data File", the hit the button under Store "Uplink
Calibration".

It mostly works but I might still have to touch it up from time to time.

Mike va3mw


On Fri, Apr 24, 2020 at 11:16 AM Alan via AMSAT-BB <amsat-bb at amsat.org>
wrote:

> Have you checked your system clock?  Try https://time.is which is very
> accurate.  Some computer clocks can drift badly, and this can cause the
> need
> for constant tweaking, even with very stable satellites.
>
> 73,
>
> Alan
> WA4SCA
>
>
> <-----Original Message-----
> <From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of k6vug-
> <-- via AMSAT-BB
> <Sent: Friday, April 24, 2020 9:53 AM
> <To: AMSAT-BB <amsat-bb at amsat.org>; VA3ASE <va3ase at gmail.com>
> <Subject: Re: [amsat-bb] Uplink Calibration in SatPC32
> <
> <
> <It happens with both Sat{C32 as well as HRD Satellite and gets really bad
> <on higher passes.
> <
> <73!Umesh, k6vug
> <
> <
> <
> <    On Thursday, April 23, 2020, 7:30:27 PM PDT, VA3ASE via AMSAT-BB
> <amsat-
> <bb at amsat.org> wrote:
> <
> < I've been learning to operate my station using SatPC32. I'm finding I
> need
> <to constantly adjust my uplink calibration in the CAT Tuning menu or I
> <start to lose myself. On the most recent pass of XW-2A it required
> <adjustment of about 150 Hz over the duration. This seems like a lot to me
> -
> <I know its normal to make fine adjustments at the beginning of a pass but
> <thought I could then leave it. Is this normal or is something amiss?
> <
> <If anything I suspect it is related to keps - I update these manually by
> <going to Satellites and clicking Update Keps. Then selecting the nasa.all
> <file and Download. Have I missed something?
> <
> <Station details: Icom IC-9700 transceiver (firmware 1.21), SatPC32 version
> <12.8d, Windows 10. Crossed yagis on a G-5500 rotator, K3NG based
> interface.
> <
> <Thanks in advance and 73,
> <Alex VA3ASE
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> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
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