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(!!!) (Best Pair #2) 448A Western Electric tipped top used/test like new 1965 (34ma and 35ma)

(!!!) (Best Pair #2) 448A Western Electric tipped top used/test like new 1965 (34ma and 35ma)

$ 139.99

1 pair) 448A WE "tipped top" used/tests like new D getter halo 1965 reboxed

1 tube) 35ma Gm=26,000

1 tube) 34ma Gm=28,000 slightly taller bottle

 

Amplitrex Test Data:

Vplate=135V

Vscreen=135V

Vgrid=-2

Good Ma range 20-30ma

Good Gm = 23,000 - 27,000

 

DIY pentode

See more: vacuum tube
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