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525

Information - Help 
ID = 82233
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Tube type:  TRANSMITTING TUBE (general)   UHF 
  Ca. 1925 up to 1945 no serial production. For instance only development samples. *****
Identical to 525
Similar Tubes
Differences not known by us:
  825_SYLVANIA

Base UX-Base (4 Pins (2 thick, USA 1924, UX) Sidecontact and top contact.
Was used by Transmittertube (Radio)
Filament Vf 7.5 Volts / If 2.5 Ampere / Direct
Description

Normal plate voltage 425 volts, bias 35 volts

 
Dimensions (WHD)
incl. pins / tip
x 159 x 70 mm / x 6.26 x 2.76 inch


Just Qvigstad

Collection of

 
20200629_201307.jpg

 

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