To keep things simple... N7NMS-5 will run on 7105 (dial) USB from 8 am to 8 pm or 1200Z to 2400Z It will switch to 3589.5 (dial) USB at 2400Z untill 1200Z or 8pm till 8 am. 73de Mike Liller, N7NMS ARRL Maryland/DC Section, Assistant SEC