Tue Mar 28, 2017 8:41 pm #1527256
Crash one, I'm single seat so don't have an intercom, which may or may not make a difference. Sigtronics have a circuit diagram online for the FTA-550 but again it's working through an intercom. As mentioned before, it is the additional bits of electronics that were in my old Delcom PTT that makes me cautious about assuming a PTT is simply make/break. Maybe it is but I'd hate to fry a new radio if I got it wrong.