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4TPB

Information - Help 
ID = 29002
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to 4TPB = CV828
Similar Tubes
Different connections:
  4TSP

Base British-7-Pin, old (M7A) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Description

As 4TSP but without top cap. Conection brought to base.

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   p. 8 & 9
History of the British Radio Valve to 1940


Just Qvigstad
4tpb_characteristics.png
4TPB: My schematic collection.
Pier Antonio Aluffi

Usage in Models 1= 1938

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
 

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