Not very different I think... on the air it's the same: they're using VARA, which has been introduced by a ham radio guy (https://rosmodem.wordpress.com/ https:

Not very different I think... on the air it's the same: they're using VARA, which has been introduced by a ham radio guy (https://rosmodem.wordpress.com/ https://rosmodem.wordpress.com/), and is widely used by ham radio operators. I'm a bit annoyed by the closed and Windows-only nature of VARA (see also discussion https://old.reddit.com/r/amateurradio/comments/12d2s3e/would_you_want_to_help_make_an_open_source_vara/ https://old.reddit.com/r/amateurradio/comments/12d2s3e/would...), but well, it works well as far as I've heard.