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(!!) (Good Value Pair) CX-71A and 71A RCA/Cunningham Balloon used/good 1930 era (21ma and 18.5ma) (same Gm)
(!!) (Good Value Pair) CX-71A and 71A RCA/Cunningham Balloon used/good 1930 era (21ma and 18.5ma) (same Gm)
$ 89.99
1 pair) UX-CX-71A and 71A RCA/Cunningham Balloon used/good 1930 era in white boxes
1 tube) 21.0mA Gm=1700 (71A RCA)
1 tube) 18.5mA Gm=1700 (CX-71A Cunningham)
(71A=5V @ .25A Filament)
(Typical Characteristics:Vplate=135V, Vgrid=-27, Iplate=17.5ma, Rplate=1.82Kohms
Gm=1650, Mu=3, Rload=3Kohms, Pout=0.4watts)
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 (Good Value Pair) CX-71A and 71A RCA/Cunningham Balloon used/good 1930 era (21ma and 18.5ma) (same Gm)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_053ef0e0-37ae-49fc-9366-0da3b283c288.jpg?v=1751919178){kind=link}
 (Good Value Pair) CX-71A and 71A RCA/Cunningham Balloon used/good 1930 era (21ma and 18.5ma) (same Gm) "Pin It")