Kickstarter - Flutter - radio protocol for 1 mile (US only)

anyone familiar with this one?
or a similar protocol that may be used in Europe?

Kinda like these then?

Note, the range is listed at 1,000m, which is somewhat less than a mile (1610m, or 5,280 feet). I would imagine like in all radio devices, that is the best case, if you are in an open area with nobody else using the spectrum.