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CV1057 / VR57 / 10E/11403 octode frequency changer

Size This valve measures 100x30mm overall and has an octal base.


Heater voltage 6.3V
Heater current 200mA
Max anode voltage 300V
Max screen voltage 125V
Max anode dissipation 1W
Max screen dissipation 300mW
Max oscillator anode voltage 225V
Conversion conductance * 0.55mA/V
Anode impedance * 2M ohms

*: At Va=250, Vg3, 5=50, Vg2=200, Ia=1mA


Pin Function
1 Metallising
2 Heater
3 Anode
4 Screen grid (G3, G5)
5 Oscillator grid (G1)
6 Oscillator anode (G2)
7 Heater
8 Cathode and suppressor grid (G6)
TC Signal grid (G4)



VR57 VR57

This file was last modified 15:48:24, Tuesday September 02, 2014