The KPC-9612+MX TNC comes with the ability to monitor two analog signals. For a recent APRS install, we needed the ability to monitor a total of four values. This project shows the steps required to modify the TNC.
OCARC Standard APRS TNC ProgrammingThis page documents our club's standardized TNC settings conforming to Bob Bruninga's new N paradigm for APRS digipeaters.