BPSK Audio Modem Flow Graph (both transmitter and receiver are in the same flow graph).
- Set up a simple client to listen to port 9989. I do this with my mac by opening up a new Terminal window and using the nc (or ncat) utility:
1 nc -l 9989
Execute the flow graph in GNU Radio Companion.
(Quickly) Set up a simple server to connect to 127.0.0.1 port 1234 I do this with my mac by opening up another Terminal window and using the nc utility:
1 nc 127.0.0.1 1234
- If everything works (sometimes you need to try the above methods a few times before it works - not sure why), you should be able to send text message from the server terminal to the client terminal by sound. Here is a demo: