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ID = 21637
Brand: Werk für Fernmeldewesen (OSW, HF, WF) Berlin, VEB, RFT (Ostd.)
Tube type:  Oscilloscope CRT, picture tube   Indication 
Identical to B7S401 = B7S4-01

Filament Vf 6.3 Volts / If 0.09 Ampere / Indirect / Parallel, (AC/DC)
Weight 370 g / 13.05 oz
Tube prices 2 Tube prices (visible for members only)
B7S401: A. H. Eigene Sammlung
Andreas Hamel

B7S401: Funkamateur 1/88
Andreas Hamel

B7S401: original Datenblatt
Daniel Consales

Usage in Models 1= 1970 ; 1= 1973?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

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