[G-E C400]
General Electric C400, ca. 1946

Tube complement: 12BE6 mixer/oscillator, 12AT6 detector, 50L6GT AF output, 35W4 rectifier.

This radio is a  four-tube superheterodyne.  The missing fifth tube is the 12BA6 IF stage.  Without it, the radio lacks sensitivity and selectivity.  Performance is on a par with four-tube TRF designs. There's only so much that can be done with four tubes, unless a clever circuit twist like the reflex design used in the G-E F-40 is used.  But after WWII, the days of clever engineering in radio design were over.  Just slap 'em together and sell 'em as fast as possible was the order of the day.


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