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ID = 5677
Tube type:  Beam Power Tube 
Identical to 25BQ6GTB = 25CU6
Similar Tubes
Normally replaceable-slightly different:
  25BQ6 ; 25BQ6GA ; 25BQ6GT
Heater different:
  12BQ6GTB ; 12CU6 ; 6BQ6GTB ; 6CU6

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 25 Volts / If 0.3 Ampere / Indirect
Information source Essential Characteristics, GE 1973   

25bq6gtb_so.png 25BQ6GTB: rtt
Anonymous 10 Collector

Just Qvigstad
25BQ6GTB: RCA Tube Manual
Peter Hoddow

Usage in Models 5= 1954

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of



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