1 Penta Labs 4D21 aka 4-125A Vacuum Tube 125-Watt Tetrode with URANIUM GLASS
USD 50.00 USD
Specifications
| Brand | Penta Labs |
| Status | Transmitter Tested |
| Model | 4D21 aka 4-125A |
| MPN | 4D21 aka 4-125A |
| Application | Radio Transmitters |
| Country Of Origin | United States |
1 Penta Labs 4D21 aka 4-125A Vacuum Tube. The 4-125A (aka 4D21) is a transmitting VHF beam tetrode tube. 125 -Watt Transmitting Tetrode. There is Uranium glass where the pins exit the tube - top and bottom - see photos.
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