(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.5ma and 1.5ma)
$139.99
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1 pair) JAN-CW-231D WE NOS yellow printed bases original boxes 323=1953 1 tube) 1.5ma Gm=400 (323=1953) 1 tube) 1.5ma Gm=400 (323=1953) Tested on Amplitrex Vplate=90V Vgrid=-3V Good Ma = 1.5-2.1ma Good Gm = 400-500 General Information 3V Filament @ 60ma, Vplate=90V, Iplate=2.1ma, Mu=8.4, Gm=510, Rp=16Kohms, Pout=4.5mW Similar to UV-199 and 864
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