FT-840 CAT/PTT interface - eHam.net Home - Amateur Radio (Ham Radio) Community Site
eHam.net Article: FT-840 CAT/PTT interface - Control your radios' frequency and mode from your computer - eHam.net is a Web site dedicated to ham radio (amateur radio). ... RE: FT-840 CAT/PTT interface by NN1I on December 3, 2001...