I wish there were a way to broadcast "I am a in " and generate a decentralized forum (i.e. phpbb 15 years ago). Growing up, all online friends lived hundreds of miles away; as an adult, all my friends have wildly different interests. Nowadays Discord is The Answer but it's not nearly as intimate as a good message board. Maybe that's a function of growing up, but I can't help but feel disillusioned that $someone hasn'…
eg. a quick search found a Ham radio group in SD: https://www.facebook.com/groups/856599821517281.
More Ham radio groups in San Diego (you can do a similar search for retro computing): https://www.facebook.com/search/groups?q=ham%20radio&filters...
Meetup also has some retro computing groups, though I don't see one in San Diego (why not start one?): https://www.meetup.com/topics/retro-computers/
(Caveat: I work on FB Groups)