Virtual Valve Museum

Virtual Valve Museum

HomeFull List

This is an archive website. It will not receive any updates, additions or corrections.

CV344 triode

CV344 The valve measures 110x40mm overall and has an octal base

This valve is a CV63 selected for use at high altitude. The valve also carries the CV63 marking

Heater voltage 6.3V
Heater current 0.8A
Max anode voltage 2.5kV
Max anode dissipation 2.5W
Max anode current 500mA
Mutual conductance
(Vh=6.3V; Va=100V; Vg1=-3V)
Efficiency at: 225MHz 35%
260MHz 32%
290MHz 17%
300MHz 12%
Max frequency at which valve will oscillate 250MHz
Cag 3.65pF
Cge 4.9pF
Cae 1.35pF

The above ratings are with the valve used under pulse conditions and anode modulation. When grid modulation is used the anode voltage should not exceed 500V.

Pin Function
1 n/c
2 Heater
3 No pin
4 n/c
5 n/c
6 No pin
7 Heater
8 Cathode
TC1 Grid
TC2 Anode