I want to be able to change my simplex node frequency via DTMF. I am going to use one of those chinese radio modules with the UART interface to a raspberry pi.

I can't write a command for every single 440MHz or 144MHz frequency. I notice in the asterisk CLI, there is console output of DTMF duration and digits.

Can I parse this output to a bash script? With RAW DTMF data, I could then create commands not using the star symbol, making it entirely different from the rpt.conf.

Skyler KD0WHB