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ID = 36685
Great Britain (UK)
Brand: BTH (B.T.H.), British Thomson-Houston Co, Ltd.
Tube type:  Thyratron 
Identical to BT5 = NGT7
Similar Tubes
Normally replaceable-slightly different:
Successor Tubes NGT7  

Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact with a cap.
Was used by Industrial
Filament Vf 5 Volts / If 5 Ampere / Indirect
Information source British Radio Valves - The Classic Years: 1926-1946   p. 155
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 548, p. 1145
Taschenbuch zum Röhren-Codex 1948/49

fg67_4.png BT5: Manufacturer's Literature
Emilio Ciardiello

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