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(!!) (Single) 71A Tungsol NOS and RCA like new 1940's in white boxes (23.6ma and 23.5ma) 1% matched
(!!) (Single) 71A Tungsol NOS and RCA like new 1940's in white boxes (23.6ma and 23.5ma) 1% matched
$ 98.88
1 pair) 71A TS and RCA 1940's same plates - different shape top mica - see photo
1 tube) 23.6ma Gm=1800 Tungsol
1 tube) 23.5ma Gm=1800 RCA Radiotron like new
Tested on Amplitrex
Vplate = 180V
Vgrid = -38V
Good Ma = 20ma
Good Gm = 1700
(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
See more: vacuum tube
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 (Single) 71A Tungsol NOS and RCA like new 1940's in white boxes (23.6ma and 23.5ma) 1% matched&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_a428dd35-0ee2-4826-a405-16f0ac38f092.jpg?v=1734144335){kind=link}
 (Single) 71A Tungsol NOS and RCA like new 1940's in white boxes (23.6ma and 23.5ma) 1% matched "Pin It")