mastodon.radio has been running for a little over four years now.
We also have a couple of "value add" services.
#xmpp - if you want instant messaging https://xmpp.mastodon.radio
#ntfy https://ntfy.fediverse.radio for push notifications without using corporate services
#webRing https://ring.fediverse.radio for finding the websites of other radio people on the fediverse
#fediHams Digital Voice network https://qrz.is/fedihams run by @michael and connects #DMR, #YSF, #EchoLink, #AllStar, and peanut