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2 X 717A TUNGSOL TUBE. BLACK PLATES. NOS MATCHED PAIR. NEW OLD STOCK IN INDUSTRIAL BOX.
TESTED IN AMPLITREX AT1000 TUBE TESTER
117% EMISSION (EM) 93% TRANSCONDUCTANCE (GM) 0.3 mA/V GAS
117% EMISSION (EM) 95% TRANSCONDUCTANCE (GM) 0.2mA/V GAS
CB402.A