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CV2240 RF pentode

This valve measures 51x17mm overall and has a B7G base

Filament voltage (parallel)1.25V
Filament voltage (series)2.5V
Filament current (parallel)330mA
Filament current (series)165mA
Max anode voltage (Ia=0)150V
Max screen voltage (Ig2=0)135V
Max anode current25mA
Max screen current1.5mA
Max anode dissipation3W
Max screen dissipation1.1W
Mutual conductance (Va=200, Vg2=150, Vg1=-25)1.85mA/V
Max operating frequency100MHz
Capacitances (with metal shield)
Cag1 max0.16pF
Cin nom4.5pF
Cout nom7.5pF

1Screen grid
2Filament centre tap, suppressor grid and internal shield
3Control grid
4Filament -ve
5Filament +ve
6Filament centre tap, suppressor grid and internal shield

Note that for parallel filament connection pins 2 and 6 are negative and pins 4 and 5 are positive


This file was last modified23:10:21, Wednesday February 23, 2022