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448A Western Electric tipped top used/good 1965 same date codes (1 Pair: 26ma and 27.5ma) (Matched on Amplitrex)

448A Western Electric tipped top used/good 1965 same date codes (1 Pair: 26ma and 27.5ma) (Matched on Amplitrex)

$ 129.99

1 pair) 448A Western Electric tipped top used/good 1965 same date codes

1 tube) 27.5ma Gm=26,700

1 tube) 26.0ma Gm=26,500

 

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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