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ID = 46166
United States of America (USA)
Brand: FTR, Federal Telephone & Radio Corp. Ltd.; Newark
Tube type:  Transmitting Triode, air cooled 
Identical to F-129BR

Was used by Transmittertube (Radio)
Filament Vf 18 Volts / If 58 Ampere / Direct

Integral radiator transmitting triode, mu 26; 30MHz max operating frequency.
Same as F-129B derated to 5KW.

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