If you setup meshtastic for the love of all that is holy reindex your channels so the public channel is 1 instead of 0. Range tests default to 0. The public channel in my area is regularly spammed with range test and is useless for any meaningful "community" communication. Instructions https://youtu.be/egAZP4KKHNo?t=419&si=s9_ML-GWEaP_bz-W

This seems like a horrible default setting or configuration. Why public channel isn't separated from a sort of control channel for those kind of station keeping messages is kind of mind boggling.