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(!!!!) (Best Pair #1) 448A Western Electric tipped top used/test like new 1965 (27.2ma and 27.3ma) 1-2% matched
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(!!!!) (Best Pair #1) 448A Western Electric tipped top used/test like new 1965 (27.2ma and 27.3ma) 1-2% matched
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(!!!!) (Best Pair #1) 448A Western Electric tipped top used/test like new 1965 (27.2ma and 27.3ma) 1-2% matched1 pair) 448A Western Electric "tipped top" used tests like new D getter halo in white boxes 1 tube) 27. 2ma Gm=26,400 (6552=1965) 1 tube) 27. 3ma Gm=26,600 (6539=1965) Amplitrex Test Data: Vplate=135V Vscreen=135V Vgrid= 2. 5V Good Ma range 18 25ma Good Gm = 25,000 DIY pentode
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1 pair) 448A Western Electric "tipped top" used/tests like new D getter halo in white boxes
1 tube) 27.2ma Gm=26,400 (6552=1965)
1 tube) 27.3ma Gm=26,600 (6539=1965)
Amplitrex Test Data:
Vplate=135V
Vscreen=135V
Vgrid=-2.5V
Good Ma range 18-25ma
Good Gm = 25,000
DIY pentode
(!!!!) (Best Pair #1) 448A Western Electric tipped top used/test like new 1965 (27.2ma and 27.3ma) 1-2% matched
Item no
:
35319490123
US$ 139.99
Pay in 4 interest-free payments of $35.00 Learn more
Min. order:
1piece
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jun 21 - Jun 26
US$40
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Exchange/Return Notes
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- Final sale items are not eligible for returns or exchanges.
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