2 X E180F TESLA PROTOTYPE TUBE. NEW OLD STOCK.
BRAND: TESLA
GREY PLATES, HALO GETTER, YELLOW LOGO, GOLD PIN, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTED:
96% EMISSION (EM) 105% TRANSCONDUCTANCE (GM) 0.8mA/V GAS
92% EMISSION (EM) 102% TRANSCONDUCTANCE (GM) 1.6mA/V GAS