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ID = 21610
Brand: Loewe-(Opta); Deutschland
Tube type:  Vacuum Pentode   Power/Output 
  Late but very rare. ***
Identical to PL11
Similar Tubes
Heater different:
Other base and other heater:
First Source (s)
Feb.1952 : Funkschau # 4
Oct.1951 : Radio-Magazin (Das) mit Fernseh-Magazin # 10
Successor Tubes 1951   PL82  

Base German Steel Y8A, 1938
Filament Vf 17.5 Volts / If 0.3 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Description Diese Röhre wurde, soweit bekannt, nur im Loewe-Opta- Fernseh-Empfänger 52T / FE300 verwendet. 
Information source Röhren-Taschen-Tabelle, (Franzis RTT)   
PL11: Telefunken Werkstattbuch
Wolfgang Bauer

PL11: Funkschau Röhrendokumente
Michael Schlör

from Just Qvigstad

Usage in Models 1= 1951

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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