The LIttle hand held FRS/GMRS do not as a rule have a lot of range.
When they say "2 miles" they mean two boats on a very large lake or two hilltops with no trees.
When Ham Radio operators talk to each other over hundreds of miles. that is not the case.. One of the radio nets I check in to with my VHF radio the local repeater covers 3 counties and it's networked to the other side of the state over 200 miles away.. now you can't count on a linked system. but I've talked direct to folks many miles away as well as via repeaters and linked system. My own linked repeater (it's a micro device) chatted with Hong Kong one morning, about 3:15 am where I was PM in HK. Not bad for a hand held (but then it only needed to reach about 20 feet)