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3 X 6CG7 / 6FQ7 TUBE. USED.
BRAND: GENERAL ELECTRIC. 1960s PRODUCTION.
GREY PLATES, HALO GETTER, COPPER RODS.
ALL THREE TUBES HAVE LOW EMISSION.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
80/68% EMISSION (EM) 100/92% TRANSCONDUCTANCE (GM) 0.4/0.4mA/V GAS
68/86% EMISSION (EM) 92/100% TRANSCONDUCTANCE (GM) 0.6/0.8mA/V GAS
66/66% EMISSION (EM) 92/92% TRANSCONDUCTANCE (GM) 0.2/0.3mA/V GAS
CH165U1