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ID = 58552
Great Britain (UK)
Brand: EMI; Hayes, Middlesex
Tube type:  Reflex Klystron   SHF/EHF (>3 GHz) 
Identical to R9559
Similar Tubes
Multiple differences or of other kind:

Was used by Radar
Filament Vf 6.3 Volts / If 1.2 Ampere / Indirect

Disc-seal reflex klystron. 4-pin pee-wee base.

  • 300 V at 35 mA resonator
  • -70 to -350 V reflector
  • 1.0 to 5.0 GHz tuning range, depending upon the external cavity and the resonating mode
  • 35 MHz electronic tuning range

Looks like CV6071.

Weight 620 g / 21.87 oz
Information source - - Manufacturers Literature   
R9559: Private collection
Emilio Ciardiello


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