Welp, this took just under a decade. To access APRS data, which is handy for tracking things like planes. To access data use telnet rotate.aprs.net When the sessions opens, type in your user name and -1 as a password to listen only: user <your_callsign> pass -1 And that's it. You'll get a feed that I won't bother you with the details of, because I don't know them yet : ) Here's the reference . Notice it mentions port 23. That's telnet! Reference for logging files from Microsoft Telnet .