Quote:
Originally Posted by radiotvnut
Yes, it uses two 50C5's and a silicon diode for a rectifier. I have not looked at the other tubes yet.
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The rest are probably 6V tubes, I see an A on the end of one, makes me wonder if it's a 6AU6A. Never seen a 12AU6A/BA6A, etc, Seeing as how if this is all in series, you have 100v between the two 50C5s. I'm gonna hazard a guess that the remaining tubes are 6BE6, 6AU6A, 6AU6 at the audio, and probably a 6BJ6 for the RF amp. I may be wrong on this though. I don't see a triode anywhere on that board (My arvin uses a 12AX7 for the audio stage). Your FM tube (on the tuner) is either a 6AQ8, 12AT7 or 12DT8.
The shielded tube may be a 6BA6.