I have noticed that when using narrow CW Filter's in my R4C that I hear
low-moderate static bursts,like storm static. I have substituted each and all
the 6EJ7's with new tubes.....no change. I removed each and all 6EJ7 tubes and
power it on with no change in the static. I remove the 6BA6 RF tube no change.
My R4C has a SS power supply, SS Audio Brd, SS Product Det. Sounds like a
electrolytic or a resistor going bad.
Any suggestions?? The RF Gain being reduced lowers this static level.
73
Bill KB9IV
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