RARE Vintage/ NOS GE HEWLETT Packard 6L6GC Gm MATCHED PAIR Holy Grails

(Change 3 to TB 11-6625-274-12/1 and later military charts), Hickok/military data added or revised settings specifically for the 6L6GC to better reflect its higher-rated design NOS tubes fall within the Gm characteristic range of an average tube, as published in the RCA RECEIVING TUBE MANUAL, which states "Individual tubes, like any manufactured product, may have characteristics that range above or below the values given.

eBay