Earlier quoted context omitted.
I'm curious about how this works - Do you personally own a stack of handheld radios that work with your radio operator rig? Does the sports event hire handheld radios and a base station that you operate? Presumably they need to be license-free if you're issuing them to unlicensed volunteers? How do you respond to reports distant stations aren't receiving messages?
We are all licensed amateur radio operators and just use our own gear. Not sure what you mean by a stack of radios - we all have our own radios in some form, and they are all interoperable by their nature (not much point in hams using radios that can't communicate with anybody else!). We normally have somebody free who can travel to any field station if they have equipment problems etc. Most events pay a small fee fo…
What I mean by "a stack of radios" is at the two races I've marshalled that had radios, they had half a dozen license-free walkie-talkies like [1] which they handed out. The "stack" was figurative, as they wouldn't have stacked up very well.
I assumed you'd be the only license holder and you'd somehow co-ordinate between the license-free radios. If you could get half a dozen license holders, obviously it's a different matter!
(The license-free radios didn't work at either race)
[1] https://www.radio-solutions.co.uk/motorola-walkie-talkie-xt1...