But until now, there have been NO forums dedicated to people who
are both electrical engineers AND ham radio operators.

What, you think that hams are non-engineers?

And then break it up to African-Americans, European-Americans, etc. etc. ?

Stay away from Yahooooo groups, don't sell your soul (email) to spamers and
marketeers.
I don't think this would serve any purpose.

Good luck!

Yuri