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ID = 35537
United States of America (USA)
Brand: Raytheon Mfg. Co.; Cambridge, MA
Tube type:  Reflex Klystron   SHF/EHF (>3 GHz) 
Identical to 2K33 = QK33 = CV1786
Similar Tubes
Normally replaceable-slightly different:
  2K33A ; 2K33B
Different connections:

Base Octal (Int.Octal, IO) K8A, USA 1935
Was used by Radar
Filament Vf 6.3 Volts / If 0.58 Ampere / Indirect

Disc-seal reflex klystron; 22.0 to 25.0 GHz, integral cavity, waveguide flange; cap for reflector; tuning knob. 1.8 KV, 40 mW out. Developed at the Clarendon Laboratory, Oxford, England and produced by Raytheon.
Tuning range from Sibley is slightly smaller than the one given by Raytheon. In 'Klystrons and Microwave Triodes' by Hamilton, Knipp and Kuper the teoretical band goes from 23 to 25GHz.

Dimensions (WHD)
incl. pins / tip
40 x 86 x mm / 1.57 x 3.39 x inch
Information source Tube Lore (I)   
- - Manufacturers Literature   Raytheon d.s. 3632, 12-55

Just Qvigstad
2K33: Raytheon Manual
Heinz Höger

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