I've got an LM frequency meter coupled lightly into the IF of an RT-18/ARC-1, with just a wire from LM to vicinity of V-116 socket. ARC-1 crystalled for 144.250. LM beating with IF sig so that I can copy W3CCX/B on 144.283 out of Philadelphia, about 35 miles away. They run 10W. Running a 17-element yagi 20 feet above ground here. Rob K2WI