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ID = 22548
Brand: Funkwerk Erfurt, VEB, RFT (Ostd.) - vorm. Telefunken GmbH
Developer: Funkwerk Erfurt, VEB, RFT (Ostd.) - vorm. Telefunken GmbH 
Tube type:  HEXODE   Frequency converter 
  Late but very rare. ***
Identical to UH171
Similar Tubes
Heater different:

Base GNOM 11-pin (DDR)
Filament Indirect / Specified current AC/DC ~ = (Series working)
Description 8-pol. Sockel nur als Prototyp, Doppelsteuerröhre. Nicht in Serie. 
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