EF9 pentode
 |
This valve measures 85x28mm overall and has a P base |
This is a vari-µ pentode for use as an RF, IF or AF amplifier
| Heater voltage |
6.3V |
| Heater current |
200mA |
| Max anode voltage |
300V |
| Max screen voltage |
300V |
| Max cathode current |
10mA |
| Max anode dissipation |
2W |
| Max screen dissipation |
300mW |
| Pin |
Function |
| 1 |
Metallising |
| 2 |
Heater |
| 3 |
Heater |
| 4 |
Cathode |
| 5 |
Suppressor grid |
| 6 |
|
| 7 |
Screen grid |
| 8 |
Anode |
| TC |
Control grid |
|
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