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ID = 15870
United States of America (USA)
Brand: General Electric Co. (GE); Bridgeport CT, Syracuse NY
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Triode, vacuum   UHF 
Identical to GL-446A = 446A = CV932
Similar Tubes
Normally replaceable-slightly different:
Successor Tubes 2C40  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uca)
Was used by Industrial
Filament Vf 6.3 Volts / If 0.75 Ampere / Indirect / Specified voltage AC/DC

Lighthouse tube. First 'soldered-can' cathode, superseeded by 2C40. GL-446A was intended as RF amplifier in radar receivers. Noise figure as low as 10 dB at 1.0 GHz, versus 23 dB of other UHF tubes, like 368A.

Information source Tube Lore (II)   p. 213
- - Manufacturers Literature   
Tube Lore (I)
Taschenbuch zum Röhren-Codex 1948/49

gl446a_so.png GL-446A: ARRL Handbook 1972
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