I hear you Don. Maybe Harris sells an RF ammeter with "+/- 3 db" specs <g> Mark Durenberger On the Road -----Original Message----- From: donroden at hiwaay.net > I cry "BS" on that one. 50kw is 50 kw. But 100 KW might not be 50 KW. It all depends on how you calibrate the meters. Don R