How about citing the "worthy" LPFM stations that each of us know.
I'll be honest, the only one I have first-ear knowledge of being local and community focused has been WQJJ-LP, the station at the heart of this thread. But that's mostly because of where I live (the deep south) and the lack of LPFMs of any variety beyond "religious repeater" in this area. The University of South Alabama has recently put an LPFM on the air that's supposedly student run, WJGR-LP (they're the Jaguars) but it's over in Mobile and far too distant for me to even DX on tropo days. I think schools using these little stations as training labs is probably a nice use case. I believe the Chilton County schools (about halfway between Birmingham and Montgomery) are doing the same thing with their WSMX-LP, although I think they have some musical help from someone outside the school administration, too. Ditto the Bessemer City Schools with a station that has to share their frequency with something like three other local translator or LPFM signals.
I seem to recall a station that did lots of community talk-oriented programming as well as filling in a niche music format (standards) was WLEZ-LP in Jackson. They seemed to focus on the part of Jackson that their signal reached best, the sort-of urban residential area just north of downtown. I don't know if the station is still so focused, as I understand they've gone through some changes since I lived in that state years ago.
There are some other stations I know in the AL/MS area with the potential to be real community gems, but I haven't heard them myself. The Calhoun County (AL) 911 district operates two comically low powered LPFMs that are supposed to only be sending emergency information to area residents. No idea what they do during the other 99.999% of the time.
Sankofa Youth Assocation's website sounds like their station could be a real laboratory for minority participation in broadcasting, but their station in Center Point (AL) so far has only played hip hop and reggae with no legal IDs since it came on the air, from what I've been told. A county youth organization runs a station or two up in the Tennessee Valley around Huntsville. That might be fun to do play-by-play for the wee kiddies playing baseball, soccer, football and wrestling. But again, who knows what they do during their down time.
Down here on the coast, the Mobile Arts Council has a permit to build a station and there seems to be some good potential for marketing the city to tourists and discussing arts and music that's local to the city, but nothing's come of it yet. I bet it expires unbuilt. The Hancock County (MS) Amateur Radio Society has two active LPFMs on the MS gulf coast but I don't know what they do or play. I just have their formats listed as "variety, local" for lack of more knowledge.
And finally, an honorable mention to WAIP-LP which is licensed to the Gulfport Islamic Center mosque; it's religious but probably the only Islamic LPFM in the south, if not the entire US
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