Also abbrev. for "Family Radio
Service," a band established by the FCC
in the 1990s for unlicensed civilian use in the United States
. The FRS band encompasses 14 channels between 462 and 467 MHz
. Maximum legal transmit power is 500 mW
FRS radios are widely available for between $20 and $100. Most claim a range of two miles, and have a reliable range somewhere slightly under one mile under normal urban usage.
The key to being satisfied with FRS radios is to think of them as expensive grown-up walkie-talkies, not like CB radios. They don't have the range to do CB-like things, but fit nicely in an inside pocket for coordination of tandem driving and suchlike.