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3 X 6188 TUBE. NEW OLD STOCK.
BRAND: SYLVANIA. 1970s PRODUCTION.
BLACK PLATES, HALO GETTER, MATCHED PAIR + A SINGLE TUBE.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
113/117% EMISSION (EM) 100/106% TRANSCONDUCTANCE (GM) 0.6/0.5mA/V GAS
108/113% EMISSION (EM) 88/100% TRANSCONDUCTANCE (GM) 2.3/3.0mA/V GAS
143/130% EMISSION (EM) 95/96% TRANSCONDUCTANCE (GM) 3.3/3.3mA/V GAS
CH165U1
