(!!!) (Good Pair) 71A Sylvania branded Raytheon NOS 1940”s (25.8ma and 26.2ma)

1 pair) 71A Sylvania branded Raytheon NOS 1940”s

1 tube) 25.8ma Gm=1800

1 tube) 26.2ma Gm=2000

(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)