PHILIPS-MINIWATT EF39 – 4 PCS
GRADE: GOLD SERIES | LABORATORY VERIFIED
Top Cap PentodeBlack Base
Made in Great Britain
Amplitrex AT1000 Tested
Offered here is an exceptional matched quad lot of 4 vintage PHILIPS-MINIWATT EF39 RF/IF pentode valves, production dated to the golden 1940s era. Made in Great Britain, these iconic classic tubes feature their distinctive original Red Coated Glass, a Top Cap Pentode layout, and a durable Black Base.
This complete batch has been professionally tested and verified on the Amplitrex AT1000 digital tester, Following the standard grid layout verified in image’s , the percentage calculations below show how each tube performs against standard 100% factory specifications ( Ia = 6.0 mA / MA/V = 2.2).
| Serial No. | Test Triode | Parameter Ia mA | Result Ia mA | % Ia | Parameter MA/V | Result MA/V | % MA/V |
|---|---|---|---|---|---|---|---|
| 2763001 | Triode | 6.0 | 6.6 | 110% | 2.2 | 2.7 | 123% |
| 2763002 | Triode | 6.0 | 6.2 | 103% | 2.2 | 2.6 | 118% |
| 2763003 | Triode | 6.0 | 6.0 | 100% | 2.2 | 2.4 | 109% |
| 2763004 | Triode | 6.0 | 7.1 | 118% | 2.2 | 2.6 | 118% |
Note: Custom duties and taxes are the responsibility of the buyer in their country.
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