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*Subject*: [amsat-bb] AGC on AO-40*From*: Scott Townley <nx7u@xxxxxxxxxxxxxx>*Date*: Mon, 17 Sep 2001 07:57:25 -0700

How exactly does the AGC/power control on AO-40 work? And how do I relate that to the telemetry/beacon AGC numbers given? I would assume that the AGC is applied in the IF stages between sat RX and sat TX. This way the beacon isn't AGC modulated, and compound uplink modes (like UL1) aren't cross-modulated by each other's AGC. Is this correct? And then does the telemetry AGC number represent exactly that gain reduction (i.e., if current AGC says 10dB, then I would expect my signal to gain 10dB S/N if at some relatively soon point in time the AGC were to change to 0dB?) And how does this all fit in with LEILA? I am missing something in this picture...one of my assumptions above must be incorrect. Thanks in Advance, ---- Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA. To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org

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