This 8974 or X2159 is a 1,500,000 watt water cooled tetrode made by Eimac with a maximum frequency of 30 MHz for full output. Output power is over 2 megawatts. Reputed to be the worlds most powerful tube it appeared in many Eimac adds like this baby photo. From the add photo, it appears that the lifting eye and the water connections had changed. The first photo shows the test amplifier built by Continental to test the X-2159 tubes.

Length = 23.75" Diameter = 17.03"
Max voltage = 22,500
Max current = 125 amps
Fil voltage = 16.3
Fil current = 600 amps
Weight = 175 lbs             GOTO INDEX