CV1660 / GPO VT82 triode
 |
This valve measures 105x45mm overall and has a B4 base. (the GPO VT82 valve is bigger at 109x50mm) |
These are basically two constructions of the same valve but carrying different markings. These were specified for the GPO (UK General Post Office)
| Nom filament voltage | 4V |
| Filament current | 150mA |
| Max anode voltage | 150V |
| Amplification factor * | 12 |
| Anode impedance * | 5k ohms |
| Capacitances | |
| Cag max | 12pF |
| Cae max | 12pF |
| Cge max | 12pF |
*: At Va=130, Vg=-4.
| Pin | Function |
| 1 | Anode |
| 2 | Grid |
| 3 | Filament -ve |
| 4 | Filament +ve |
