I am trying to get my Yaesu 857D running on 2m packet with a Kantronics KPC3+. I can connect with another station on the other end, but I do not show a connection on my end. Another station can connect to mine, but it does not show a connection on my end. So it seems that the KPC3+ is not decoding the transmission from the other station. My transmit and receive lights work on the KP3+. Occasionally, my TNC decodes text from another station, but it does not show a connection. I have switched out antennas, feed lines, computers, terminal programs, USB cables without success. A friend tested my TNC with my cable on his radio (not an FT-857), and it worked perfectly. I am using the rear panel jack and PKT mode and have menu 73 set to PKT1200. Does anyone have any suggestions?