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4 X EL90 TUBE. NEW OLD STOCK.
BRAND: BRIMAR. 1960s PRODUCTION
BLACK SMOKED GLASS, HALO GETTER
TESTED IN AMPLITREX AT1000 TUBE TESTER
83% EMISSION (EM) 96% TRANSCONDUCTANCE (GM) 2.0mA GAS
86% EMISSION (EM) 97% TRANSCONDUCTANCE (GM) 2.4mA GAS
105% EMISSION (EM) 99% TRANSCONDUCTANCE (GM) 2.4mA GAS
82% EMISSION (EM) 94% TRANSCONDUCTANCE (GM) 2.2mA GAS
