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1 X 13DE7 SYLVANIA TUBE. NEW OLD STOCK.
BRAND: SYLVANIA
BLACK PLATES, HALO GETTER, COPPER RODS.
TESTED IN HICKOK 539C TUBE TESTER:
TRIODE 1: MINIMUM GOOD EMISSION = 60% = 1260uHMOS
3000 uHMOS EMISSION (EM)
TRIODE 2: MINIMUM GOOD EMISSION = 60% = 3800uHMOS
7500uHMOS EMISSION (EM)