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Information - Help 
ID = 20555
Tube type:  Oscilloscope CRT, picture tube 
Identical to DH3-91 = 1CP31 = CV2302
Similar Tubes
Multiple differences or of other kind:

Base Loctal-8, B8G (Sylvania, 1938)
Filament Vf 6.3 Volts / If 0.55 Ampere / Indirect
Description 3 cm green screen CRT, electrostatic focus and deflection. 28 mm useful screen.
500V accelerating potential, 0.22 mm/V vertical deflection sensitivity, 0.19 mm/V horizontal sensitivity. 
Dimensions (WHD)
incl. pins / tip
x x 105 mm / x x 4.13 inch
Information source - - Manufacturers Literature   
  DH3-91: Valvo Handbuch 1966/67
Georg Richter
DH3-91: aus eigener Sammlung
Karl-Heinz Entrich

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DH3-91: GR
Georg Richter

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DH3-91: Valvo, Spezialröhren I, 1964
Anonymous 15 Collector

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from Just Qvigstad

Usage in Models 1= 1960

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

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