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30_Rogers

Information - Help 
ID = 30813
       
Country:
Canada
Brand: Rogers-Majestic, Standard Radio Manufacturing, Rogers Radio Tubes; Toronto
Developer: Rogers-Majestic, Standard Radio Manufacturing, Rogers Radio Tubes; Toronto 
Tube type:  Triode, vacuum   Universal 
  Late but very rare. ***
Identical to 30_Rogers
First Source (s)
1928 : Saga of the Vacuum Tube, Tyne p.349

Base UY-Base, 5 Pins (USA, April 1927)
Filament Indirect
Description for "Batteryless Receivers" 
Information source - - -   
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rogers30pix.jpg
30_Rogers: Rogers R30 Canada
John Albion

 

from Just Qvigstad

Usage in Models 10= 1929 ; 2= 1930

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):12


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