Mystery solved TDR mode on my AIM 4170 revealed problems with the coax that I did not know were there. All working good now, thanks everyone for the help! Mark Lunday, WD4ELG Greensboro, NC FM06be wd4elg at arrl.net http://wd4elg.blogspot.com SKCC #16439 FISTS #17972 QRP ARCI #16497