Sylvania/ECG 5U4GB 5AS4A Rectifier Tube- Hickok 539B tests@ 116/123,Min:54/54
USD 36.95 USD
Specifications
| Country Of Origin | United States |
| Brand | PhilipsECG / Sylvania |
| Type | 5U4GB / 5AS4A |
| Model | 5U4GB / 5AS4A |
Hickok 539B tested. Hickok 539B is a mutual conductance (Gm) type tube tester. Tube features black smooth plates and a top-mounted 'Halo-Ring' getter construction. (Plate#1 / Plate#2). Test Results.
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SYLVANIA /6SN7 GTB / TUBE / TESTED / MADE IN UNITED STATES /