Just to complicate matters a bit. These days what may appear to be FRS (Family Radio Service) radios, which don't require a license to operate, may actually be so-called hybrid radios that transmit on the GMRS (General Mobile Radio Service) frequencies. GMRS radios requires a license to operate.

If the radio has 14 channels, then it is a real FRS radio, but if it has 22 channels, then it is a hybrid.

Last I looked FRS radios were becoming very hard to find - Motorola doesn't make them anymore, and unfortunately lots of people are starting to use the GMRS radios illegally.