Originally Posted by tgduffy
It's my understanding that GMRS units require a license at $80/year.
You are tight for US. Most walky talky type radios are FRS/GRMS but you can only the FRS (family radio service ) channels can be used without a licence. Those channels are low power and good for 1-2 miles depending on terrain.
The GRMS channels have more power. One license covers family members (I assume that the license holder must be included in the communication and would be responsible for behavior of the users).
An FRS radio would be fine for backing or for around the campground, especially in a cell - free area, but when I'm backing I don't have an extra appendage to hold a radio. We also use cell phones although we have both FRS radios and hand - held ham radios (amateur license required).