I use Paul Hanson for any Icom problems and he is highly recommended by users of the list. Avvid Electronics is also highly regarded. Paul Hanson & Associates 2411 Robert Nash Court Tucker, GA 30084-3325 770-939-9379 AVVid 2101 E. Shady Grove Rd. Irving, TX 75060 800-214-5779 Good luck! Bill WZ4GW Clearwater, FL