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ID = 15106
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to 10E/7312 = VT25 = CV1025

Base L4 British large 4 pin (Codex=Bq)
Filament Vf 7.5 Volts / If 2 Ampere / Direct

L4 low-loss Base. Pa 36W. Filament current is specified to be within the range from 1 to 3A at 7.5V. 15MHz max operating frequency.
Royal Air Force store reference for VT25/CV1025 transmitting triode.

Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Original-techn. papers.   
10E/7312: My Collection
Bruce Morgenstern

10E/7312: Manufacturer's Literature
Emilio Ciardiello


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