So the refs comms frequency is 860/873 MHz and has a range of 800 yards according to the manufacturers specs, they claim full encryption but I cannot believe that newspaper and other such organisations haven't tried to break that. The company is Vokkero they also claim that only six people can be on the system when active but any number can listen in but not talk, would love to hear some of those conversations!!! Oh yea the unit is 3000 dollars to buy .