Something that someone who didn't get filtered would be able to look up on their own.

I did look it up, but the way the OP was formed I thought that is some secret underground forum I just am not able to find.

Amateur radio, public (by law - unencrypted, anyone can listen) long-distance communications over certain bands where people are allowed to transmit after a certain barrier of entry of licensing and equipment.

A hobby some people pig up when they’re boar-ed and go hog-wild on spending for equipment.

/s

A place to talk about what radio you own.

Welp, you're out of the club now.