I've had tubes generate static, but they were mixers. So it can be any tube
doing that. I would swap tubes out ONE at a time.
73,
Bob WW3QB
For about 20 minutes after being turned on, R-4A ehibits static building from
low to high volume over about 10 seconds, followed by a "pop", then repeat.
AGC setting and band selected makes no difference. Happens with or without
signal input. After about 20 minutes, the static goes away and the receiver
performs normally. I'm guessing this is a marginal tube in the audio chain?
73, Curt KB5JO
_______________________________________________
Drakelist mailing list
[email protected]
http://mailman.zerobeat.net/mailman/listinfo/drakelist
_______________________________________________
Drakelist mailing list
[email protected]
http://mailman.zerobeat.net/mailman/listinfo/drakelist
