Fellow Amps subscribers, I have a number of non-inductive Globar 50 ohm tubular resistors. Build a big dummy load. Specs are: Part #: 886SP500K Length: 5 X 3/4 Ohms : 50 Adv. power: 90 W Peak energy: 500 joules Peak volts: 4000V Series / parallel for high power. Please contact me off the reflector . Norm N8NH