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ID = 8913
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  CRT (cathode ray tube, picture tube)   Indication 
Identical to 3FP7 = CV1761 = ZP540
First Source (s)
01.Aug.1942 : Tube Lore (I)

Base Diheptal (14 pin glass U14) (Codex=sp)
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect
Description 3 inch electrostatic focus and deflection, P7 long persistence screen. 4.4KV accelerating voltage. GE and National Union known sources.
Also available with A suffix. 
Dimensions (WHD)
incl. pins / tip
x 254 x mm / x 10.00 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49   
Tube Lore (I)   
John Albion

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Anonymous 10 Collector

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from Just Qvigstad

Usage in Models 1= 1942??

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

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