BH is a gas rectifier tube. It doesn't have a filament. Large pins #1 and #4 are used for AC input. DC is on pin #2. BH tubes aren't very expensive. Closest modern tube is 0Z4.
You could use a couple silicon diodes until a tube is available. Add some series resistance as BH has a 90 volt drop under full load.
Norm
:I just picked up what's left of a Crosley AC 7 C, with its battery eliminator, which is missing its rectifier. What is a Raytheon B.H.? thanx, nb
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