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1B5/25S

Information - Help 
ID = 4117
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to 1B5/25S
Similar Tubes
Other class quality (otherwise equal):
  CV759
Other base and data slightly different:
  1H6G

Base 6-Pin-Base U6A, old, USA
Filament Vf 2 Volts / If 0.06 Ampere / Direct / Battery =
Description Glass type used as combined detector, amplifier, and avc tube in battery-operated receivers. 2 volts filament, 0.06 amperes. Typical operation as class A amplifier. The 1B5/25S is electrically similar to the 1H6G. 
Literature Essential Characteristics, GE 1973   
 
1b5.jpg
1B5/25S: 1B5
Nikolaj Baranov

 
460_1.png
1B5/25S: Telefunken Werkstattbuch
Wolfgang Bauer

 
1b525s_spec.png
1B5/25S: Grundig Rö-Tabu, zum M1, Band 3, 1948
Anonymous 15 Collector


Usage in Models 21= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):21


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