The FZ-064A is a 60 watt beam pentode made by the Matsuda Company for the Japanese military in WWII. It was based on the RCA 807 or 1625 with a 6 pin base and lacking an anode cap.
Length = 4.13" Diameter = 1.62"
Max voltage = 600
Max current = 100 ma
Fil voltage = 12.6
Fil current = .45 amps GOTO INDEX