 |
| |||
| five-electrode tube; pentode tube; three-grid valve | |||
| pentode | |||
| three-grid tube | |||
|
Pentode : 13 do fraz, 2 tematyki |
| Anteny i falowody | 7 |
| Technika i technologia | 6 |
|
| |||
| five-electrode tube; pentode tube; three-grid valve | |||
| pentode | |||
| three-grid tube | |||
|
Pentode : 13 do fraz, 2 tematyki |
| Anteny i falowody | 7 |
| Technika i technologia | 6 |