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(!) 448A Western Electric tipped top used/like new 1965-1966 (1 pair: 32.6ma and 31.8ma) (matched on Amplitrex)

(!) 448A Western Electric tipped top used/like new 1965-1966 (1 pair: 32.6ma and 31.8ma) (matched on Amplitrex)

$ 139.99

1 pair) 448A WE "tipped top" used/tests like new D getter halo 1965-1966 reboxed

1 tube) 32.6ma Gm=28,700

1 tube) 31.8ma Gm=28,100

 

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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