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ID = 42285
United States of America (USA)
Brand: DeForest-Tubes
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to deForest_Senderöhre
Similar Tubes
Multiple differences or of other kind:

Base Wires Wires only
Was used by Transmittertube (Radio)
Filament Vf 10 Volts / If 2.75 Ampere

Amateur Transmitting tube by DeForest.
Ua= 700-3000 V; Ia= 110 mA; -Ug= 50 V; Power 250 W.

It is not clear if it is the type H (H_DeForest), since data are considerably different:
250 W / 150 W; 110 mA / 50 mA (Tyne: up to 100 mA); Filament 2,75 A / 2,35 A.

More powerful variant? Based on Test results? Copy error?

Anyway it is improbable that 'Senderöhre' was the actual name given by De Forest to one of his tubes. Please refer to H_DeForest.

Text in other languages (may differ)
deForest_Senderöhre: Radio-Umschau H.14/1926
Wolfgang Eckardt


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