try pilot or flying j. they tend to carry a bunch of CB stuff. or find a local CB shop to ask them.
Now i'm thinking about getting a handheld cb/scanner. Is this any better or worse than the typical cb?
Don't even ask us about hand-held CBs! They are toys, and nothing more. No good as a countermeasure. No good for emergencies. No good for nothing. Don't waste our time or your money.