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3-4

Information - Help 
ID = 23692
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Current Regulator, Iron in Hydrogen 
Identical to 3-4

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament
Dimensions (WHD)
incl. pins / tip
32 x 80 x mm / 1.26 x 3.15 x inch
Weight 30 g / 1.06 oz
Tube prices 1 Tube prices (visible for members only)
Information source Ballast Tube Handbook, The   

34_sock.png 3-4: o
Anonymous 15 Collector


Just Qvigstad
Usage in Models 1= 1945?? ; 1= 1946?? ; 1= 1947? ; 1= 1951?

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

Collection of

Collection of a member from CH
Collection of a member from D
 
usa_34_amperite_eb_1.jpg

3-4
 

Variants

An Stelle der Glimmerhalteplatten werden hier Haltebügel verwendet.


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