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Target AO-40 Downlink Strength


I just picked this up from the AMSAT-DL site:

Please note: QSO-signal strength should be 10 dB below Middle Beacon (MB) 
strength, as MB is +10 dB to GB, which gives maximum QSO-strength.

So, monitor the beacon and adjust your uplink so you don't exceed the MB 
level minus ~2S units (assuming 6 dB/S unit) or more realistically for most 
radios minus ~3 S Units (because most radios seem to be closer to 3dB/S unit).

I always set one of my vfo's to monitor the beacon so I can switch quickly to 
see its current S meter reading.

Mike, N1JEZ
AMSAT #29649
Local Area Coordinator
"A closed mouth gathers no feet."
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