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Title: R-388 Problem (resolved) Post by: W7SOE on July 19, 2007, 01:07:35 PM I have finally had time to dig into my R-388. I bought it some time ago, i hope it will be my first functional receiver in my elusive AM station.
I have completed the alignment, which went ok. There were some minor issues but they were resolved. Now the problem: I can tune around on the 4mc band and get the receiver to go dead (no hiss) at discrete points. It will sometimes also squeal at these points. The S meter will have a large deflection. Banging on the chassis will either fix the problem or cause the problem to shift in frequency. The same will occur if I put a tool into the IF cans and prod the slugs, not turn them, just flex them ever so slightly. It seems any perturbation will alter the result. I am not sure this is the only band it occurs on, so far it is.... I have been able to enjoy the QSOs on 3870 here in the NW, just have to whack the chassis a bit. ;-) I hope to join in one of these days......... Perhaps this rings a bell with someone? 73 Rich W7SOE Title: Re: R-388 Problem Post by: Rick K5IAR on July 19, 2007, 02:08:07 PM Next time it happens gently rock the BFO switch to see if it is possibly the culprit.
Rick/K5IAR Title: Re: R-388 Problem Post by: W7SOE on July 19, 2007, 02:33:36 PM I'll give it a try, do you think it is the switch itself?
Rich Title: Re: R-388 Problem (resolved) Post by: W7SOE on July 20, 2007, 02:42:27 PM Tightening all the screws erased the issue. Love an easy fix....
Rich Title: Re: R-388 Problem (resolved) Post by: Rick K5IAR on July 20, 2007, 08:01:19 PM Congratulations, Rich. Bask in the glory of it, they don't come along often! ;D AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
Rick/K5IAR |