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2 X 6463 TUBE. NEW OLD STOCK IN ORIGINAL BOX.
BRAND: UNITED ELECTRON. 1979 PRODUCTION.
GREY PLATES, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
126/121% EMISSION (EM) 123/119% TRANSCONDUCTANCE (GM)2.2/2.4mA GAS
125/129% EMISSION (EM) 115/123% TRANSCONDUCTANCE (GM) 4.2/3.8mA GAS