CV1056 / VR56 pentode
 |
The valve measures 98x28mm overall and has an octal base. G1 is the top cap. |
| Heater voltage | 6.3V | |
| Heater current | 200mA | |
| Max anode voltage | 300V | |
| Max screen voltage | 125V | |
| Max anode dissipation | 1W | |
| Max screen dissipation | 0.3W | |
| Mutual conductance |
Va=250V, Vg2=100V, Vg1=-2V, Ia=3mA |
1.8mA/V |
| Anode impedance | 2.5 M ohms | |
| Amplification factor | 4500 | |
| Max operating frequency | 125MHz | |
| Capacitances | ||
| Cae | 8.2pF | |
| Cge | 5.5pF | |
| Cg1-g2 | 2.25pF | |
| Cag (max) | 0.003pF | |
| Pin | Function |
| 1 | Metallising |
| 2 | Heater |
| 3 | Anode |
| 4 | Screen grid |
| 5 | Suppressor grid |
| 6 | n/c |
| 7 | Heater |
| 8 | Cathode |
| TC | Control grid |
