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ID = 33669
Tube type:  Double Triode   RF/IF-Stage 
Identical to 12AT7WB
Similar Tubes
Normally replaceable-slightly different:
  12AT7WA ; 12AT7WC ; E81CC ; M8162
Other class quality (otherwise equal):
  12AT7 ; CV455

Base Noval, 9 pin miniature (USA pico-9) B9A
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect

Ruggedized version of 12AT7.

Center tapped heater allows operation from either 6.3 V or 12.6 V heater supply.

Text in other languages (may differ)
12AT7WB: Sylvania
Georges Werts

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12AT7WB: rtt
Anonymous 10 Collector

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