[ARC5] Radio receiver type CW-46051A

[David Stinson]

P.S.  IIRC, there's an oil-filled cap on the output of
the audio amp.  It goes open a lot and will kill your audio.
I *think* it's in that passive audio filter.  No time to
look at the diagram right now.  Hope I'm thinking of
the right set.

On 10/19/2022 1:31 AM, Hubert Miller wrote:
>> I'm restoring this system with the original dyno, junction box, control box..
> I built the cables , hooked it up , but the audio is extremely low and I think the TRF stage or stages may be breaking into oscillation.
> I haven't done any real troubleshooting, but I know the dyno module is OK.
> TRF radios can be finicky, so i was wondering if there were any hints as to what to expect ?
> 
> I think I'd stuff in a BC band coil and see what it does on an AM local. You can also skip any RF stage by touching a short wire antenna
> to the top of the tuned circuit of the detector stage. Testing the tubes of course is the first step, or at least being certain they are good.
> If a stage is oscillating, you may see very strange voltage on the plate of the tube, even with just a voltmeter.
> A buzzer-injector signal to the plate of the detector tube should tell you if the audio stage is working.
> Good luck - I'm sure you will whip it into shape soon.
> -Hue Miller
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