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ID = 27628
Tube type:  Reflex Klystron   SHF/EHF (>3 GHz) 
Identical to CV67
Similar Tubes
Other characteristic (electr. data):
  CV35 ; CV36
Predecessor Tubes 10E/501  

Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Was used by Radar
Filament Vf 4 Volts / If 1.6 Ampere / Indirect / Specified voltage AC/DC

100mW output at approx 3300MHz.
CV67 was derived from NR89. The interaction gap was reduced in distance and in diameter, so to have a better coupling with the electron beam. Also the electron gun was redesigned to simplify the focus. The new design resulted in fairly insensitive to variations in the electrode voltages.
CV67 is a frequency variant of CV35 and CV36.

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Information source -- Original-techn. papers.   Callick, Metres to Microwaves
CV67: O.F.
Otto Frosinn

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CV67: Manufacturer's Literature
Emilio Ciardiello

CV67: Manufacturer's Literature
Emilio Ciardiello

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