2 X 6F6G TUBE. NEW OLD STOCK.

BRAND: KEN-RAD. 1950s PRODUCTION.

BLACK PLATES, FLAR GETTER, COPPER RODS, MATCHED PAIR.

TESTED IN AMPLITREX AT1000 TUBE TESTER:

105% EMISSION (EM) 104% TRANSCONDUCTANCE (GM) 2.0mA/V GAS

105% EMISSION (EM) 104% TRANSCONDUCTANCE (GM) 4.2mA/V GAS