[EricH]

Originally Posted by PneumaticMonkey

Ok, thanks. Wifi not always at competition, and hotspot illegal. Got it. Another question, though, is the hotspot illegal b/c it creates a wifi network or b/c it uses cellular data. I can't imagine it's the second one, but stil.

It's the wifi network. Robot radios operate over wifi.

If there's a public network available, it's fair game for use (under normal operating conditions for the venue). But, as noted, it may not be available. (Or it might simply be swamped.)