Posted by Bob McGraw - K4TAX on Feb 25, 2018; 3:48am URL: http://elecraft.85.s1.nabble.com/KPA500-Faulting-on-high-SWR-on-power-rise-tp7638486p7638555.html
Yes and in years past AM legal limit PEP power was about 3KW. PL-259's were used on these transmitters and Johnson KW Matchbox type equipment.