CV21 pentode
 |
The valve measures 105x32mm overall and has a Mazda Octal base |
The prototype of this valve is VP41.
| Heater voltage | 4V |
| Heater current | 0.65A |
| Anode voltage | 250V |
| Screen voltage | 250V |
| Control grid voltage | -2.7V |
| Anode current | 7.7mA |
| Screen current | 2mA |
| Mutual conductance | 2mA/V |
