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ID = 21395
Tube type:  Transmitting Tetrode, air cooled   beam power 
Identical to QB4/1100GA = 4-400A = 8438 = YL1461

Base SPECIAL TUBEBASE in general Top contact with a cap.
Filament Vf 5 Volts / If 14.1 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
87 x 156 x mm / 3.43 x 6.14 x inch
Weight 185 g / 6.53 oz
Information source - - Manufacturers Literature   Valvo, Senderöhren, 1983
QB4/1100GA: O.F.
Otto Frosinn

QB4/1100GA: Valvo,Senderöhren, 1983
Anonymous 15 Collector

QB4/1100GA: Valvo,Senderöhren, 1983
Anonymous 15 Collector

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