[R-390] New Project - Latest Issue

Carole White-Connor carolew at bellatlantic.net
Thu Mar 1 22:18:32 EST 2007


With your help, I'm getting there. The set is performing nicely.

My new issue is this: if I adjust the IF Gain per Chuck's instructions, I lose a
lot. With weak stations, I have to adjust the AF Gain to maximum to be able to hear
the station so that I can understand it. If I just the IF Gain high (about 1/8 turn
from maximum), I get more background noise but I can hear the station with the AF
Gain at about 6. The background noise does not drown out the station. This occurs
both below and above 8 mhz.  I don't think I'm losing sensitivity because I can
still hear the weak stations. On strong stations, they come in loud and clear pretty
much wherever I set the IF Gain. I've been listening a lot on 49m and 41 m. Those
bands are alive with stations.

All the tubes in the set test good. The weak ones have been replaced. I haven't done
any work in the IF module except for replacing the caps that Chuck recommends
replacing. I haven't touched the RF module.

Any ideas? Any particular things to suspect? Any troubleshooting tips?

Again, thanks for your help (and your patience)

Joe Connor



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