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 |
|
