Vintage EIMAC 4D21 4-125A Radial Beam Power Tetrode VACUUM TUBE
USD 35.00 USD
Specifications
| Brand | Eimac |
| Type | Vacuum Tube |
| Model | EIMAC 4D21 4-125A |
| Country Of Origin | United States |
I don’t know if it’s any good. Filament good. No shorts from grids to filament. Looks new but not sure.
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