Virtual Valve Museum

Virtual Valve Museum

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CV35 WWII reflex klystron, a frequency variant of the CV36 and CV67. Operating at 1400V, these gave 300mW output with a reflector voltage of between -230 and -320V. They had a tuning range of about 5%, with two tuning plungers to pre-set the range and a third to adjust it over about 2%.

They were replaced by the CV116/CV237/CV238 and CV272 series.

The CV35 itself was an improved version of the original NR89 "Sutton Tube"

Heater voltage4V
Heater current1.45A
Tuning range3095 to 2970MHz
Max resonator dissipation10W
Resonator voltage range1.0 to 1.5kV
Reflector voltage range-230 to -320V
Grid voltage0
Min power output100mW
Capacitances
Grid to cathode + heater + resonator (max)15pF

PinFunction
1Grid
2Heater
3n/c
4n/c
5n/c
6n/c
7Heater
8Cathode
TCReflector
CV35