I guess I can put some batteries in my FRS radio... but you should just get a Midland 75-822 and a magnetic antenna... "installs" in a minute (power from the cig lighter) and you can take it out later just as quick when you don't need a CB.

I was on a trail once with folks that had FRS, CB, or ham. Like to drove me nuts keeping track of which of the three radios to reply on.