Got a used Radio Shack TRC-503 CB radio w/ 13' cable and magnetic antenna.
It currently is powered via a cigarette lighter plug-in with fuse, but could be easily converted to run off the battery.
Works good but might need to be tuned a bit with an SWR meter.
just google trc-503 to see what it looks like.
$35 for the whole setup.....cb, cable, antenna, handset.
Brian 860-460-0903