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ID = 30766
Tube type:  Beam Power Tube 
Identical to 4-1000A = 8166 = PL-8166 = PL-4-1000A

Base SPECIAL TUBEBASE in general Top contact with a cap.
Filament Vf 7.5 Volts / If 21.3 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
130 x 235 x mm / 5.12 x 9.25 x inch
Weight 700 g / 24.69 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
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  4-1000A: ARRL The Radio Amateur's Handbook 1985
Götz Linss
4-1000A: GP
George Papaiz

4-1000A: data-sheet
Anonymous 15 Collector

4-1000A: data-sheet
Anonymous 15 Collector

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