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2 X 6463 TUBE. NEW OLD STOCK IN ORIGINAL BOX.
BRAND: UNITED ELECTRON. 1977 PRODUCTION.
GREY PLATES, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
143/128% EMISSION (EM) 119/115% TRANSCONDUCTANCE (GM)2.4/3.4mA GAS
140/146% EMISSION (EM) 130/130% TRANSCONDUCTANCE (GM) 2.6/3.4mA GAS