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2 X 30 RCA TUBE. NEW OLD STOCK.
BRAND: RCA. 1950s PRODUCTION.
BLACK PLATES, SOLID GETTER, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
90% EMISSION (EM) 88% TRANSCONDUCTANCE (GM) 0.5mA GAS
100% EMISSION (EM) 100% TRANSCONDUCTANCE (GM) 0.5mA GAS