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(1 set of 10 tubes) 448A Western Electric "SMOOTH TOP" used/test like new/85-95% output with "D" getter 1960-1971
(1 set of 10 tubes) 448A Western Electric "SMOOTH TOP" used/test like new/85-95% output with "D" getter 1960-1971
$ 399.99
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1 set of 10 tubes) 448A WE "SMOOTH TOP" used/test like new/85-95% output with "D" getter 1960-1971
$399.99 for 10 tubes
Tested on Amplitrex
1) 25ma Gm=25,500
1) 23ma Gm=25,600
1) 26ma Gm=24,000
1) 23.2ma Gm=23,500
1) 27ma Gm=24,600
1) 25.5ma Gm=23,600
1) 27ma Gm=24,600
1) 22.6 Gm=25,300
1) 26.2ma Gm=29,100
1) 25ma Gm=25,000
Vplate=135V
Vscreen=135V
Vgrid=-2
Good Ma range 20-30ma
Good Gm = 23,000 - 27,000
See more: vacuum tube
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 448A Western Electric "SMOOTH TOP" used/test like new/85-95% output with "D" getter 1960-1971&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/448adln.jpg?v=1571438872){kind=link}
 448A Western Electric "SMOOTH TOP" used/test like new/85-95% output with "D" getter 1960-1971 "Pin It")