Make sure in your tracking program, you didn't accidentally enter a silly wrong altitude value for your qth. I had an issue here, where my altitude got changed to 30,000 meters...it caused very similar issues with doppler tracking at various points during the pass, especially at TCA.
73, N0AN Hasan
On Thu, Nov 26, 2020 at 6:30 PM lu9cbl--- via AMSAT-BB [email protected] wrote:
Hi to all, a friend of mine, has satpc32 with and SDR. We have the doppler correction, when the satellites it's in AOS, de frequency it's OK, in TCA has (for example) 1 KHz difference, and in LOS has 2 KHz difference.
It's there any configuration to modify??? all the satellites that we found, in AOS has the correct frequency, but in TCA and LOS its not the same as we can see in the waterfall of HDSDR.
Ir i compare the doppler with http://www.amsat.org.ar/pass.htm the frequency has the same between the waterfall and the webpage.
Thanks in advance.
Mati LU9CBL
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