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608A

Information - Help 
ID = 38964
       
Country:
United States of America (USA)
Brand: Marathon (tubes), Northern Manufacturing Co.; Newark, NJ
Developer: Marathon (tubes), Northern Manufacturing Co.; Newark, NJ 
Tube type:  Triode, vacuum   Power/Output 
Identical to 608A

Base UX-Base (4 Pins (2 thick, USA 1924, UX) 2 Sidecontacts
Was used by Radio/TV-reception etc.
Filament Vf 5.5 Volts / If 1 Ampere / Indirect
Description

Early AC tubes for conversion of battery radios. The filament was connected to side terminals on the tube base. Usually sold with a Marathon AC kit, consisting of a cable with the necessary clips to connect the heaters.

 
Literature Saga of the Vacuumtube, Tyne   p.346
 
marathon_ac_608_a.jpg
608A: O.F.
Otto Frosinn

 
608_marathon_base~~1.png
608A: own collection
Peter den Boer

 


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