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7QR20

Information - Help 
ID = 31148
       
Country:
Czechoslovakia
Brand: Tesla; Praha, Bratislava etc.
Tube type:  Oscilloscope CRT, picture tube 
Identical to 7QR20

Filament Vf 6.3 Volts / If 0.6 Ampere / Half indirect
Description 7 cm Schirmdurchmesser. 
Tube prices 1 Tube prices (visible for members only)
 
7qr20_bild.jpg
7QR20: selbst gemacht
Jaroslav Ferst

 
7qr20_sockel.gif
7QR20: Röhren- und Halbleiterkatalog Tesla n.p.
Jaroslav Ferst

 
7qr20_techdat.png
7QR20: Röhren- und Halbleiterkatalog Tesla n.p.
Jaroslav Ferst


Usage in Models 1= 1952?? ; 1= 1960?? ; 1= 1962? ; 1= 1965??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4


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