One of my favorite hobbies of course is radio. I own a few.
I think the most interesting “radios” are RTL-SDR devices. The RTL stands for Realtek (which is the chipset) and SDR stands for Software Defined Radio.
They only cost a few bucks for a “generic” one and there are more sensitive and selective ones that cost bigger bucks.
Essentially if it is a radio signal of some kind, with a $20 USB Software Defined Radio you can listen to or decode a multitude of radio traffic/chatter. In fact it seems darn near illegal, and sometimes it is. I have other blog pages with this information but I’m just going to re-hash what I’ve been up to this week.