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2 X 5963 TUBE. USED, VERY GOOD CONDITION AND RESULT TEST. BALANCED TRIODES IN ALL TWO TUBES
BRAND: RCA. 1950s PRODUCTION.
BLACK PLATES, SQUARE GETTER (LEFT TUBE) / U-FOIL GETTER (RIGHT TUBE), MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
80/85% EMISSION (EM) 90/90% TRANSCONDUCTANCE (GM) 0.1/0.2mA GAS
91/91% EMISSION (EM) 107/100% TRANSCONDUCTANCE (GM) 0.4/0.2mA GAS
