CV3789 triode
 |
This valve measures 41x19mm overall and has a B9A base with gold plated pins. |
The prototype of this valve is 5842 or 417A (not the klystron!)
| Heater voltage | 6.3V |
| Heater current | 300mA |
| Max anode voltage | 200V |
| Max negative grid voltage | -20V |
| Max anode dissipation | 4.5W |
| Max cathode current | 38mA |
| Max heater cathode voltage | 55V |
| Max bulb temperature | 160C |
| Mutual conductance * | 25mA/V |
| Noise factor at 45MHz * | 2db |
| Noise factor at 400MHz * | 8db |
*: At Va=150, Vg=-1.5, Rk=60 ohms, Ia=25mA
| Pin | Function |
| 1 | Anode |
| 2 | i/c |
| 3 | Heater |
| 4 | Grid |
| 5 | Grid |
| 6 | Cathode |
| 7 | Grid |
| 8 | Grid |
| 9 | Heater |
