A number of electro-archeologists out there have asked about the valves found in the old British homebrew rig I presented yesterday. Here you go:
Mic amp: ECC83
What I think is the modulator: EL84
Suspected oscillator: M8162 also marked as 12AT7 WA UJ
What looks like the driver: EL85
Final: QQVC3.10
I’ll try to determine the resonant frequency of the tuned circuits.
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