Quote:
Originally Posted by David Roper
I don't quite understand the radio/stereo portion, specifically I'm curious about the filament string. I picture an ordinary AA5 chassis, but that would be mono, obviously. If there were two 50C5s, was there a selenium rectifier?
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The radio was an AM only, mono, of course. The radio receiver section used a 12AU6 autodyne convertor, one IF transformer with a crystal diode detector.
The amplifier section used a 12AX7 and two 50C5's or 50EH5's, for stereo phono playback. Controls were radio-phono selector, tone control, volume-on-off and a knob for the direct drive tuner, like any other inexpensive radio.
The only reason, I remember it so well, is I had one from a scrap set.
IIRC, they all had a silicon rectifier, for the power supply and AA5 type output transformers.
06-12-2014, 10:25 AM
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