After getting the unit back and using it for about a week, I find that the internal tuner no longer works on 15 meters. I tried testing it into a dummy load, as well. Apparently this is a NEW problem that has surfaced as others on the 746pro yahoo group are experiencing this, as well. :headbang. They have a temporary fix posted over there. I don't recall it having this problem when I sent it off, so I'm hoping they fix it on their dime. I guess I'll find out.