Summary

Cold cathode helium filled full wave rectifier, capable of delivering 60 mA DC output. It was released at the end of 1925 and replaced at the end of 1926 by the BH which was capable of delivering 120 mA of DC.
Manufacturer: Raytheon Manufacturing Company, Cambridge, MA, USA.

Physical Description

Conical bulb on 4 pin UX style base mounted on display block.

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