Andromeda - UK based company doing this already!!!
Our company of ex-police officers uses Andromeda AD100-GPS, which uses 3G/4G, and are hugely impressed in comparison to Airwaves which always let us down in our policing roles. Sure, there are some signal areas which aren't quite there yet, but MUCH better than the constant blackspots of Airwave use. And they are extremely cost effective even when compared to closed network radios. Highly recommended and definitely the technology of the future!
Biting the hand that feeds IT
