> A few months ago when there was a lot of emergency services activity in my area and I didn't know why, I was reminded that no-one in my region is contributing a feed to Broadcastify.

Maybe instead of emergency services activity, it could be other types of activities (hazards, local events, nextdoor alerts, local business/SIGs rss feeds, etc), it is all just local info and knowledge aggregation endpoints and archives that have over-the-air and terrestrial distribution channels.