[Amps] Re RF Parts Tubes

[Edwin Karl]

I have used several RF Parts 3-500Z tubes with good results.
I found tha Amprex tubes deliver slightly less (100 w or so) output for
a given input power and drive.

Currently I have 2- LK-500Z amplifiers both with RF Parts bottles and 
am very pleased with the result. 

Have had 572's from RF Parts, one went west, sent both back for evaluation.
Received replacement within a week. They stand behind their stuff.

ed K0KL