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CV2240 RF pentode
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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 current | 25mA |
| Max screen current | 1.5mA |
| Max anode dissipation | 3W |
| Max screen dissipation | 1.1W |
| Mutual conductance (Va=200, Vg2=150, Vg1=-25) | 1.85mA/V |
| Max operating frequency | 100MHz |
| Capacitances (with metal shield) |
| Cag1 max | 0.16pF |
| Cin nom | 4.5pF |
| Cout nom | 7.5pF |
| Pin | Function |
| 1 | Screen grid |
| 2 | Filament centre tap, suppressor grid and internal shield |
| 3 | Control grid |
| 4 | Filament -ve |
| 5 | Filament +ve |
| 6 | Filament centre tap, suppressor grid and internal shield |
| 7 | Anode |
Note that for parallel filament connection pins 2 and 6 are
negative and pins 4 and 5 are positive
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