Virtual Valve Museum

Virtual Valve Museum

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STC CV315 / 4304CB RF triode oscillator

Size This valve measures 160x60mm overall and has a 4 pin B4 base.

See also CV1062 and CV1288, both of which share the 4304CB markings. The CV315 was supplied in matched pairs.

Filament voltage 7.5V
Filament current 3.2A
Max anode voltage 1250V
Max anode dissipation 50W
Amplification factor *


Anode impedance * 5k ohms
Mutual conductance * 2mA/V
Max frequency for above ratings 100MHz
Cin max 2.5pF
Cout max 1.0pF
Ca, g max 3.5pF

*: At Va=1000V, Ia=50mA.

Pin Function
1 n/c
2 n/c
3 Filament
4 Filament
TC1 Anode
TC2 Grid


Inside view