LimeSDR Mini – An open, full-duplex, USB stick radio for femtocells and more
I get to recommend one of my favorite sites again.http://websdr.ewi.utwente.nl:8901/You can also just go to http://websdr.org and select from a bunch of other servers.Basically, the site is an SDR with a web interface. You're able to go there and listen to the radio. It is, obviously, RX only. Still, you can go there and listen to the ham radio enthusiasts across the world.I should warn you, it is quite a time sink. Not everything is in morse code. You can stumble across some interesting stuff and it is fun just playing with the buttons.If you've wondered what ham is all about and haven't bothered to get your license, this is a great way to experience the monitoring aspect of being a radio operator. If you're anything like me, it will eat up more time than you'd care to admit.Still, it is an SDR that you can actually play with to see if you're interested in learning more about it.