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ID = 28851
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to UV217C
Similar Tubes
Normally replaceable-slightly different:
Other characteristic (electr. data):
  UV217 ; UV217A ; UV217B
First year Jan.1927 Saga of the Vacuumtube, Tyne page 323
Predecessor Tubes UV217  

Filament Vf 10 Volts / If 3.25 Ampere
Description Brandname: Kenotron 
Michael Schlör


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