[R-390] Gain drift

dog agfa at hughes.net
Sat Oct 13 13:32:31 EDT 2018


I'll try some of these things, especially measuring the AGC when it 
happens. It takes a while because it's not always happening. I'm still 
not sure if it happens below 9MHz but I'm thinking it does. It's not 
just on one band and the BW on the IF appears irrelivant except for more 
or less noise out which is normal. This is one of those buggars to find, 
it takes so long to happen. I thought about cleaning the bandswitch but 
haven't gotten it out yet. I see the 2 green screws on the front of the 
2nd Osc module to the RF module are missing. I'll replace them next time 
the front panel is off.




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