Tubes / semiconductors by category - Manufacturer
Selected: Johnson Company, E.F.; Waseca, MN
| Name | Maker | Year | User | Usage | Type | Base |  |
 |
 |
 |
 |
 |
 |
 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 550 | Johnson Co | Transmitte | Universal | Transmit | TRANSMI | – | – | – | – | – | – | – | ||
| 560_johnson | Johnson Co | Transmitte | Universal | Transmit | TRANSMI | – | – | – | – | – | – | – | ||
| 570 | Johnson Co | Transmitte | Universal | Transmit | Wires | – | – | – | – | – | – | – | ||
3 tubes or semiconductors found.