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TSP4

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ID = 10501
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Developer: Mullard Radio Valve Co. Ltd.;  
Tube type:  Vacuum Pentode   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to TSP4 = VT113_GPO = ARP11 = CV1681
Similar Tubes
Normally replaceable-slightly different:
  CV1330

Base British-7-Pin, old (M7A) (Codex=Nf) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.5 Ampere / Indirect / Specified voltage AND current AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   Pages 148 & 149
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

arp11_2.png TSP4: Manufacturer's Literature
Emilio Ciardiello


Just Qvigstad
tsp4_techdat01.png
TSP4: Mullard Valves 1936
Peter Hoddow

Usage in Models 1= 1938

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

Collection of

 
8018cb2d_1f5b_41f7_b71d_0039b1f8bb42.jpeg

 

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