864=VT-24 Hytron USA NOS 1940”s (3.4ma)

VT-24=864 Hytron NOS in white box 1940”s

3.4ma

Gm=500

NOS Ma = 3 – 3.5ma

NOS Gm = 500

(864=low microphonic, rebased and improved WD-11)

– RCA Radiola III-A 1924