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B4S2

Information - Help 
ID = 18965
       
Country:
Germany
Brand: Funkwerk Erfurt, VEB, RFT (Ostd.) - vorm. Telefunken GmbH
Tube type:  Oscilloscope CRT, picture tube 
Identical to B4S2
Predecessor Tubes B4S1  

Base German Steel Y8A, 1938 Other combinations of connections.
Filament Vf 4 Volts / If 0.7 Ampere / Indirect / Parallel, (AC/DC defined voltage)
Dimensions (WHD)
incl. pins / tip
45 x 142 x mm / 1.77 x 5.59 x inch
Tube prices 5 Tube prices (visible for members only)
Information source
 
roehre_b4s2_bild_1.jpg
B4S2: Eigenes Bild
Anonymous 971 Collector

 
oszi_b4s2.gif
B4S2: RFT RTB Spezialröhren 1961
Wolfgang Eckardt

 
b4s2_spec.png
B4S2: RFT-Spezialröhren 1965
Anonymous 15 Collector


from Just Qvigstad

Usage in Models 1= 1958 ; 1= 1968?

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


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