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1 X ACH1 ULTRON TUBE. NEW OLD STOCK.
BRAND: ULTRON
TESTED IN FUNKE W20 TUBE TESTER:
TRIODE: MINIMUM GOOD EMISSION = 60% = 1.8 mA
5.0 mA EMISSION (EM)
HEXODE: MINIMUM GOOD EMISSION =60 = 4.8 mA
9.0 mA EMISSION (EM)