Amateur Radio (or "ham radio" as it's sometimes called) is one of my hobbies. I started shortwave listening as a toddler, and was earned my license at age 16 with several of my high school friends. A few of us are still at it some 45+ years later.
I prefer operating in the high frequency (1.8 - 30 MHz) part of the spectrum where communications between stations rely on ionospheric refraction and reflection. Other related interests include software controlled and software defined radios, digital communications software, and software for antenna and HF propagation modelling.
Black Box Radios Antenna Modeling Software HF Radio Propagation Conditions
Some photos and diagrams of my radio shacks (local and DX) over more than 40 years....
CW, PSK, JT-* Signals heard at my station (FN31) over the last hour