Does it have to be audio? A meshtastic radio like what you get from https://www.lilygo.cc/collections/lora-or-gps will pair to a smartphone app (or browser app) and let you text with people who also have a meshtastic radio nearby. If you’re in a reasonably dense area there may be several people chatting.
I got canned from my last job and thr way I found out was my work Gmail was locked out, fuckin class acts them.
Getting fired from my current gig would be a relief tbh.