| K 11 | Reflexklystron |
| K 12 | Reflexklystron |
| K 20 | Reflexklystron |
| K 26 R | Reflexklystron |
| K 27 | Reflexklystron |
| K 27A | Reflexklystron |
| K 300 | Reflexklystron |
| K 3033 | Reflexklystron |
| K 3077 | Reflexklystron |
| K 352 | Reflexklystron |
| K 369 | Reflexklystron |
| K 51 A |
Rauschdiode
|
| K 700 | Reflexklystron |
| K 75E | Reflexklystron |
| K 806 | Reflexklystron |
| K 81 A |
Rauschdiode
|
| K-31 | HV Gleichrichter |
| KATL 08-01 | Funkenstrecke |
| KB 2 |
Duodiode
|
| KBC 1 |
Duodiode, Triode
|
| KC 1 |
Triode
|
| KC 1 euro | Triode |
| KC 3 |
Triode
|
| KCH 1 | Triode, Heptode |
| KDD 1 |
Doppelleistungstriode
|
| KF 3 |
Pentode
|
| KF 4 |
Pentode
|
| KF 7 | Pentode |
| KK 2 |
Oktode
|
| KL 1 |
Leistungspentode
|
| KL 2 |
Leistungspentode
|
| KL 4 |
Leistungspentode
|
| KN 2 A |
Krytron
|
| KN 22 |
Krytron
|
| KN 6B | Krytron |
| KR 85 | Triggerröhre |
| KZ 12573 | Schwingquarz |