Virtual Valve Museum

CV239 TR Cell

The glass section measures 120x28mm overall; the resonant section is 22x55mm.

This is the same as CV59 but with an increased pressure of gas filling.

This cell operates over the range 3000 to 3124MHz, and has a water vapour filling at a pressure equivalent to 10mm of mercury.

The running voltage is 250 to 450V at 0.1mA.