The RK-18 is a 40 watt triode with a mu of 18 and a maximum usable frequency of 60 MHz for full output. The RK-18 appears to be Raytheon's first transmitting tube and was first put on the market in 1933.
Length = 8.50" Diameter = 2.00"
Max voltage = 1250
Max current = 100 ma
Fil voltage = 7.5
Fil current = 3 amps GOTO INDEX