I do understand !!! But if your NOT in line of sight you can pretty much forget any distance with the 110. Not even half the advertised distance. I can yell further than they could transmit. I use a Motorola 6300 FRS, has much better range. Look at the output wattage.
The GPS function worked good. I wouldnt pay the extra for the radio if your not going to use it. I like having unlimited mapping, storage of waypoints and routes on the SD card. Both will get you there.