# TNC2C serial — copy to /etc/max25/tnc2c-serial.env # Example: onboard UART /dev/ttyS4 TNC2C_DEV=/dev/ttyS4 TNC2C_BAUD=19200 TNC2C_LINE=8n1 TNC2C_RADIO_BAUD=2400 TNC2C_MODEM=tcm3105 HYBBX_SERIAL_LINE=8n1