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W7/1D

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ID = 37412
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  TWT, Travelling wave tube   SHF/EHF (>3 GHz) 
Identical to W7/1D = CV2358
Similar Tubes
Normally replaceable-slightly different:
  VX7039

Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Filament Vf 6.3 Volts / If 0.76 Ampere / Half indirect / Specified voltage AC/DC
Description 120mW output from 6.5 to 8.5 cm. 
Dimensions (WHD)
incl. pins / tip
67 x 351 x mm / 2.64 x 13.82 x inch
Information source -- Original-techn. papers.   
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Just Qvigstad
w71dcv2358_01.png
W7/1D: Manufacturer's Literature
Emilio Ciardiello

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