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ID = 5303
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to 12BA6A
Similar Tubes
Normally replaceable-slightly different:
First Source (s)
12.Jun.1961 : Electron Tube Registration List
Predecessor Tubes 12BA6  

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DC

Same characteristics as 12BA6 with controlled warm-up, for reliable operation in heater series connections.

Information source Essential Characteristics, GE 1973   
- - Manufacturers Literature   
12BA6A: GP
George Papaiz

12BA6A: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

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12BA6A: Manufacturer's Literature
Emilio Ciardiello

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