Neat stuff Geek... was playing around at this site
http://69.27.184.62:8901/I like that they show full bands and a graphic of where radio transmissions are happening in a time lapse graph and so you can see what frequency has a transmission happening and click and go to it.
25 years ago I had a ham radio without a FCC license
and I just listened a lot and a couple times would get in on a conversation. Also had an old Norelco Short Wave Radio ( guessing a 1960s model which I remember said Made in Holland on the back of it )which was blue plastic body with white plastic knobs and the pressed paper fiber board back to it. It was an old tube radio that I picked up at a yard sale for $5 but it worked awesome for pulling in some far away signals with the antenna that I used which I would disconnect my ham radio and connect the old short-wave radio to this 20 foot antenna on roof of my house.
These days I have a modern hand held Radio Shack AM/FM/SW/Weather radio that takes 4 AA batteries and has a scan for picking up on signals, but its not as good as that old Norelco I had.
The closest thing I have seen to what you shared was a USB Stick that was sold about 10 years ago that was an Internet Radio Device, where the device basically when connected to a computer would launch a program that gave you access to streaming audio broadcasts all over the world so I wasnt stuck with just whatever my radio could pick up in New Hampshire USA because whatever radio stations around the world that had a streaming service that were added to this device I could connect to without a weak signal.
Saved this page for future use to listen in on different radio transmissions.