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2 X EF800 TELEFUNKEN TUBE. NEW OLD STOCK.
BRAND: TELEFUNKEN. PHILIPS PRODUCTION.
MESH PLATE, HALO GETTER, MATCHED PAIR.
TESTED IN HICKOK 539C TUBE TESTER:
MINIMUM GOOD EMISSION = 60% = 4500uMHOS
6750 uMHOS EMISSION (EM)
6750 uMHOS EMISSION (EM)