The RK-25 is a 10 watt dissipation pentode with full ratings to 30 MHz made by Raytheon. This tube is supposed to be a RK-25B as the base is bakelite and not isolanite.
Length = 5.37" Diameter = 2.13"
Max voltage = 500
Max current = 60 ma
Fil voltage = 6.3
Fil current = .9 amp GOTO INDEX