(!!) (Best Pair) 6KM6 Sylvania NOS (148ma and 147ma)

1 pair) 6KM6 Sylvania NOS

1 tube) 147ma Gm=13,200

1 tube) 148ma Gm=13,000

Tested on Amplitrex

Vplate=200V

Vscree=140V

Vgrid=-20V

Good Ma= 80-100ma

same pinout as a 6LQ6

smaller top cap diameter than a 6LQ6