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CV281 triode hexode

Size This valve measures 112x36mm overall and has an octal base


Heater voltage 6.3V
Heater current 300mA
Max hexode anode voltage 250V
Max triode anode voltage 100V
Max screen voltage 100V
Optimum oscillator voltage (peak) 15V
Conversion conductance 620µA
Total cathode current 10mA
Hexode Cag (mean) 0.14pF
Hexode Cae 11.5pF
Hexode Cge 4.5pF
Triode Cge 8.0pF


Pin Function
1 Metallising
2 Heater
3 Hexode anode
4 Screen grid (G2, G4)
5 Triode control grid and hexode G3
6 Triode anode
7 Heater
8 Cathode
TC Hexode control grid