2 X 13DE7 HALTRON TUBE. NEW OLD STOCK.

BRAND: HALTRON

GRAY PLATES, HALO GETTER, COPPER RODS, MATCHED PAIR.

TESTED IN HICKOK 539C TUBE TESTER:

TRIODES 1: MINIMUM GOOD EMISSION = 60% = 1260uHMOS

3800/3800uHMOS EMISSION (EM)

TRIODES 2: MINIMUM GOOD EMISSION = 60% = 3800uHMOS

7500/7500uHMOS EMISSION (EM)