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(!!!!) (Recommended Pair) 71A and CX-71A Cunningham Balloon 1930 era used/test like (24.5ma and 28.8ma) (same Gm)
(!!!!) (Recommended Pair) 71A and CX-71A Cunningham Balloon 1930 era used/test like (24.5ma and 28.8ma) (same Gm)
$ 109.99
1 pair) 71A and CX-71A Cunningham Balloon 1930 era used/test like in white boxes
1 tube) 24.5ma Gm=1900
1 tube) 28.8ma Gm=1900 (CX-71A) slightly taller
Tested on Amplitrex
Vplate=180V
Vgrid=-38V
Good Ma = 20ma
Good Gm = 1600-1700
See more: vacuum tube
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 (Recommended Pair) 71A and CX-71A Cunningham Balloon 1930 era used/test like (24.5ma and 28.8ma) (same Gm)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_6083ae5e-83e4-44b3-bc42-0674118dcdc1.jpg?v=1751820427){kind=link}
 (Recommended Pair) 71A and CX-71A Cunningham Balloon 1930 era used/test like (24.5ma and 28.8ma) (same Gm) "Pin It")