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ID = 22554
Brand: Funkwerk Erfurt, VEB, RFT (Ostd.) - vorm. Telefunken GmbH
Developer: Funkwerk Erfurt, VEB, RFT (Ostd.) - vorm. Telefunken GmbH 
Tube type:  Vacuum Pentode   Power/Output 
Identical to UL171
Similar Tubes
Multiple differences or of other kind:
First Source (s)
Jan.1951 : Funkschau # 1
Predecessor Tubes UL11  
Successor Tubes 1955   UL84  

Base GNOM 11-pin (DDR)
Filament Vf 55 Volts / If 0.1 Ampere / Indirect / Series, AC/DC
Description 8-pol. Sockel nur als Prototyp, 
Information source
UL171: Datenblatt Funkwerk Erfurt
Wolfgang Eckardt

UL171: RFT Elektronenröhren technische daten 1952
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