CV1221 transmitting pentode
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This valve measures 248x63mm overall and has a 4 pin T4 base |
Filament voltage | 10V |
Filament current | 2A |
Max anode voltage | 1500V |
Max screen voltage | 500V |
Max anode current * | 150mA |
Total cathode current * | 200mA |
Mutual conductance ** | 1.7mA/V |
Continuous anode dissipation | 75W |
Screen dissipation | 20W |
Capacitances |
Caf | 20pF |
Cgf | 26pF |
Cag | 0.05pF |
*: These values apply for use of the valve as an unmodulated Class C amplifier
at not less than 15 metres wavelength
**: At Va=1500, Vg2=400, Ia=60mA
Pins: base view, clockwise from the index pin: screen grid, filament, control grid, filament.
The base shell is the suppressor grid connection and the top cap the anode.
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