No its not nation wide. Its a conventional Analog 800mhz frequency, they cannot use it unless they are very very close to one another, it only goes a very short distance. If they are very far away, you will here them say go to TAC 1. Because they arent close enough to talk on direct. But like I said, Direct is a simplex analog 800mhz freq, I think it begins with 867.???? I cant remember though.