I have this same need and am preparing an evaluation of Meshtastic in the field this month.
I'm part of a volunteer EMS division within a paid fire department and we staff foot teams and medical carts at large events at our 90,888-capacity stadium (football, concerts, etc; well over 100k including tailgaters at our biggest game of the year) and music festivals with 10-40k attendees on the adjacent golf course.
While we have fancy Motorola APX 8000XE, our on-site dispatch wholly lacks visibility into unit locations and the abysmal cell service precludes software solutions leveraging mobile phones.
I'm part of a volunteer EMS division within a paid fire department and we staff foot teams and medical carts at large events at our 90,888-capacity stadium (football, concerts, etc; well over 100k including tailgaters at our biggest game of the year) and music festivals with 10-40k attendees on the adjacent golf course.
While we have fancy Motorola APX 8000XE, our on-site dispatch wholly lacks visibility into unit locations and the abysmal cell service precludes software solutions leveraging mobile phones.