... Doppler always will have a more pronounced effect (in relative terms, of course, based on the frequencies being used) on the higher of the two ...
Here's the actual equation for determining Doppler shift ...
Your generalization is correct. On a 45 degree pass of a sat that's in a circular orbit at 497 miles up, approximate Doppler shifts calculate to ...
At 15m, +/- 477 Hz At 10m, +/- 659 Hz At 2m, +/- 3.27 kHz At 70cm, +/- 9.76 kHz At 23cm, +/- 28.5 kHz at 13cm, +/- 53.8 kHz
Clint, K6LCS http://www.work-sat.com
Clint,
Thank you for this. Please note that I got a "broken link" window when I tried to go to that page.
73,
Tim - N3TL
________________________________ From: Clint Bradford clintbrad4d@earthlink.net To: amsat-bb@amsat.org Sent: Tue, June 1, 2010 12:49:35 PM Subject: [amsat-bb] Doppler Discussion
... Doppler always will have a more pronounced effect (in relative terms, of course, based on the frequencies being used) on the higher of the two ...
Here's the actual equation for determining Doppler shift ...
Your generalization is correct. On a 45 degree pass of a sat that's in a circular orbit at 497 miles up, approximate Doppler shifts calculate to ...
At 15m, +/- 477 Hz At 10m, +/- 659 Hz At 2m, +/- 3.27 kHz At 70cm, +/- 9.76 kHz At 23cm, +/- 28.5 kHz at 13cm, +/- 53.8 kHz
Clint, K6LCS http://www.work-sat.com _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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Clint Bradford -
Tim - N3TL