[amsat-bb] AO-7 transponder pan view

Daniel Estévez daniel at destevez.net
Wed Nov 25 09:21:06 UTC 2015

El 24/11/15 a las 23:20, Joe escribió:
> what are the three hills about?

That's just noise from the passband of AO-7 transponder. It's stronger
in three spots, one on the middle of the passband and two near the
edges. These spots are quite strong, in fact comparable to some of the
stations. If you look closely, you can also see that these spots get
frequency modulated with the strong transmissions.

This is one of those things that it's quite difficult to see on a
traditional receiver but it's quite apparent on an SDR waterfall.



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