Hi... many thanks for all of the responses to my FSK reverse xmit. I resolved it as was suggested. I went the menu item 6-1 on the MK V and changed it from normal to reverse and all is well. Apparently with AFSK that was not an issue but with FSK it is. Very much appreciate all the helpful ( and very quick !! ) responses. Tnx/73 Burt w1zs