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DW-03A

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ID = 79746
       
Country:
United States of America (USA)
Brand: National Radio Tube Company; San Francisco, CA
Developer: National Radio Tube Company; San Francisco, CA 
Tube type:  Transmitting Triode, air cooled   Universal 
Identical to DW-03A
Similar Tubes
Normally replaceable-slightly different:
  DW-11

Base Jumbo 4-pin bayonet (1918)
Was used by Transmittertube (Radio)
Filament Specified voltage AC/DC
Description This tube is designed to have increased filament-grid capacity by the plate and grid leads brought out into the stem by beaded glass covered lead-in wires. This allows the tube to be operated at higher voltages and also it allows the tube to operate higher frequencies. 
Information source -- Collector info (Sammler)   


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