CV73 output beam tetrode
 |
The valve measures 142x55mm overall and has a 7-pin base |
This valve has aligned grids
| Heater voltage | 4.2V |
| Heater current | 2.5A |
| Series modulator | |
| Max anode voltage | 3.5kV |
| Max screen dissipation | 0.9W |
| Break modulator | |
| Max peak anode voltage | 12.5kV |
| Max screen dissipation | 2W |
| Max anode dissipation | 10W |
| Max screen voltage | 700V |
| Max grid negative bias | 700V |
| Max grid to screen voltage | 1.2kV |
| Max peak cathode current (pulse of approx 10µs duration, 400:1 min off-on ratio) |
3.5A |
| Mutual conductance (Va=Vg2=200V; Ia=40mA) |
7.5mA/V |
| Pin | Function |
| 1 | n/c |
| 2 | Control grid |
| 3 | n/c |
| 4 | Heater |
| 5 | Heater |
| 6 | Cathode and beam plates |
| 7 | Screen grid |
| TC | Anode |
The number 15 is marked on a shield below the electrode structure, and NE68A marked on the pinch