| 3CX1200A7 air cooled Triode | Thoriated | Air | 3.6 | 0.7 | 1.5 | 3CX1200A7 |
| 3CX1200D7/YU-121 air cooled Triode | Thoriated | Air | 4 | 0.6 | 1.6 | 3CX1200D7/YU-121 |
| 3CX1200Z7/YU-181 air cooled Triode | Thoriated | Air | 4 | 0.6 | 1.6 | 3CX1200Z7/YU-181 |
| 3CX1500A7/8877 air cooled Triode | Oxide | Air | 3.5 | 1 | 2.1 | 3CX1500A7/8877 |
| 3CX1500C7/8938 air cooled Triode | Thoriated | Air | 3 | 1 | 1.6 | 3CX1500C7/8938 |
| 3CX1500D7 air cooled Triode | Thoriated | Air | 4 | 0.6 | 1.6 | 3CX1500D7 |
| 3CX400A7/8874 air cooled Triode | Oxide | Air | 2 | 0.3 | 0.3 | 3CX400A7/8874 |
| 3CX800A7 air cooled Triode | Oxide | Air | 2.2 | 0.5 | 0.8 | 3CX800A7 |
| 4CX1000A/8168 air cooled Tetrode | Oxide | Air | 3 | 0.9 | 1.6 | 4CX1000A/8168 |
| 4CX1500B/8660 air cooled Tetrode | Oxide | Air | 2.9 | 0.7 | 1.1 | 4CX1500B/8660 |
| 4CX250B/7203 air cooled Tetrode | Oxide | Air | 2 | 0.3 | 0.4 | 4CX250B/7203 |
| 8874/3CX400A7 air cooled Triode | Oxide | Air | 2 | 0.3 | 0.3 | 8874/3CX400A7 |
