[R-390] Noise when warm ('390A)

[llgpt at aol.com]

The voltage regulator tube OA2 has been known to have those symptoms.

Les Locklear
Gulfport, MS.

-----Original Message-----
From: Dennis Wade <sacramento.cyclist at gmail.com>
To: R-390 HF Receiver List <r-390 at mailman.qth.net>
Sent: Sun, 11 Sep 2005 15:07:08 -0700
Subject: [R-390] Noise when warm ('390A)

Hi everyone,

      I've noticed lately that after a few hours of operation, a
"frying bacon" or "snap-crackle-pop" noise begins to occur, slowly
increasing as time goes on.  No real difference in band or mode.

      Any quick troubleshooting hints to isolate to a stage?

      What is the consensus...more likely a cap or a tube?

            Thanks for the advice,

           Dennis
--
Dennis L. Wade
KG6ZI
Carmichael, CA
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