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Information - Help 
ID = 33110
Brand: Werk für Fernmeldewesen (OSW, HF, WF) Berlin, VEB, RFT (Ostd.)
Tube type:  Transmitting Triode, air cooled   UHF 
Identical to HT301 = EC560
Similar Tubes
Normally replaceable-slightly different:
  2C40 ; CV2643 ; GL-2C40

Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Filament Vf 6.3 Volts / If 0.7 Ampere / Indirect / Parallel, (AC/DC defined voltage)

Ab Anfang der 1960er Jahre geänderte Bezeichnung der EC560.

Dimensions (WHD)
incl. pins / tip
33 x 50 x mm / 1.30 x 1.97 x inch
Information source - - Manufacturers Literature   RFT-Spezialröhren, 1965
HT301: Sammlung KHB
Karl - Heinz Bossan

HT301: RFT-Spezialröhren 1965
Anonymous 15 Collector

HT301: RFT-Spezialröhren 1965
Anonymous 15 Collector

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