| STC CV2189 / V240C/2K Heil
tube
 |
This valve measures 65x17mm
glass, and 30mm across the disk. It has a B7G base. |
| Heater voltage |
6.3V |
| Heater current |
0.26A |
| Tuning range |
3950 to 4050MHz |
| Control grid voltage |
-40V |
| Resonator voltage |
255 +/- 15V |
Screen grid voltage
(adjusted to give a constant anode current of 35mA) |
400V max |
| Anode voltage |
300V max |
| Cathode current |
65mA max |
| Screen grid dissipation |
1.5W max |
| Power output |
350mW min |
| Mean power input |
18W max |
| Magnetic field |
1200H |
The total thermal drift from
cold to the final operating frequency is between 7 and 10MHz and is completed
in about 5 minutes. The frequency change with ambient temperature is about
50kHz per degree C.
| Pin |
Function |
| 1 |
Control grid |
| 2 |
Cathode |
| 3 |
Heater |
| 4 |
Heater |
| 5 |
Anode |
| 6 |
Resonator |
| 7 |
Screen grid |
|
