CV2516 / 2C39A UHF triode
 |
This valve measures 70x32mm overall. |
| Heater voltage | 6.3V |
| Heater current | 1.05A |
| Max grid voltage | -150V |
| Max seal temperature | 175C |
| Cathode conditioning time | 60s |
| Oscillator or amplifier | |
| Max anode voltage | 1kV |
| Max cathode current | 125mA |
| Max anode dissipation | 100W |
| Max grid voltage | -150V |
| Max grid dissipation | 2W |
| Max grid current | 50mA |
| Anode modulated oscillator or amplifier | |
| Max peak anode voltage | 1.2kV |
| Max cathode current | 100mA |
| Max anode dissipation | 100W |
| Max grid dissipation | 2W |
| Max grid current | 50mA |
The transit time heating effect of the cathode must be compensated by a reduction in heater voltage after dynamic operation of the valve has started. The back heating is a function of frequency, grid current and grid bias. For satisfactory life the heater voltage must be adjusted to the value indicated below:
| MHz | Heater voltage |
| Up to 400 | 6.3 |
| 400 to 1000 | 6.0 |
| 1000 to 1500 | 5.5 |
| 1500 to 2000 | 5.0 |
| 2000 and above | 4.5 |
