On Sun, Apr 30, 2017 at 9:21 PM, Jake via chirp_users <chirp_users at intrepid.danplanet.com> wrote: > I can receive his transmissions but he cannot receive my transmissions. You must either get you friend to disable receive CTCSS on his radio your you must program your radio to transmit the matching CTCSS tone. http://www.miklor.com/COM/UV_CTCSS.php Jim KC9HI