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448A Western Electric "tipped top" used/tests like new D getter halo 1965-1966 reboxed (1 Pair: 30ma and 31.8ma)
448A Western Electric "tipped top" used/tests like new D getter halo 1965-1966 reboxed (1 Pair: 30ma and 31.8ma)
$ 99.99
1 pair) 448A WE "tipped top" used/tests like new D getter halo 1965-1966 reboxed
1 tube) 30.0ma Gm=26,800 1965
1 tube) 31.8ma Gm=26.600 1966
Amplitrex Test Data:
Vplate=135V
Vscreen=135V
Vgrid=-2.5V
Good Ma range 18-25ma
Good Gm = 25,000
DIY pentode
See more: vacuum tube
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