Greetings, BingleUK, and welcome. Check out the list of forums on RR, there are probably a few that you will be interested in.
There are many members like you. I'm 74 and started listening to various bands when I was around ten yeas old. My first radio was a floor model tri-band: AM broadcast, FM broadcast, and shortwave (probably 30 ~ 40 meters). From there my interest kind of exploded to all bands and services, but I still enjoy tuning around on every band to see what I can find. I'm currently chasing nighttime signals on AM broadcast, and searching VHF low band for 'skip' signals.
Those old radios are fun, but it's hard to nail down exactly what frequency you're hearing unless there's a way to ID the station.
Good luck.