6LU8 GE NOS 1979 (2.3/51ma)

6LU8 GE NOS 1979 (FN) – triode section slightly low Gm

2.3ma Gm=2800

51ma Gm=8500

Tested on Amplitrex

section 1 triode) Good Ma=2ma, Good Gm=3000-3500

section 2 pentode) Good Ma=50-55 Good Gm=8000-9000