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ID = 30941
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to 5R4GA
Similar Tubes
Other shape (e.g. bulb type):
  5R4G ; 5R4WGA
Other class quality (otherwise equal):

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 5 Volts / If 2 Ampere / Direct
Description 2.8KV PIV, 165mA max DC.
Same as 5R4GYA, but low-loss base not specified. 
Information source -- Collector info (Sammler)   
5R4GA: Private collection
Emilio Ciardiello

5R4GA: ARRL Handbook 1972
Anonymous 10 Collector


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