Tell us why we should unexpectedly come to love your hobby.
You can even play with broadcasting and/or receiving “secret” tv and radio stations - that is, they’re on alternate frequencies that regular TVs and radios don’t pick up.
Go on…
Amateur Television aka Ham TV. It’s not really secret TV of course. But, yeah, you can broadcast and receive video and audio. I haven’t tried it yet but it always seemed like it would be kinda neat. https://www.hamtv.com/