Configuring Serial TNC Ports

Terminal-Node Controllers (TNC) or radios containing built-in TNCs are connected through a computer serial port using the KISS protocol.

To add a new TNC port, click the Add button on the Configure Ports tab. The port editing dialog will appear. Set the port type to Serial_TNC.

screenshot of serial TNC configure panel

The other parameters you will need to specify for the TNC are:

The "Test Port" button provides a means of verifying that you have connected to the correct place; it opens a terminal window connected to the configured serial port so that you can manually test the TNC for the desired operation. To complete testing, close the terminal window.

Once you have the settings the way you want them, click OK. Ensure that the TNC is connected to the port before you click OK. At that time, the port will issue commands to the TNC to put it in KISS mode, and then wait for AX.25 packets to arrive.