I have a question on the MSP Commerical Vehicle units Ford Explorers that are used to stop and inpection truck in Maryland. Looking at this units on the side of the highway or cruise the Interstates looking for truck to inspect there is no Lowband antennas on the SUVs. Do they use a hidden antenna for this band or is Lowband radio not installed in these SUVs? I have never heard them on Lowband even during and before stops. I feel that they are using Nextels/cell phones. I do no that they must get the DMV and DOT inforamtion on the trucks from a data service from onboard computer, since they give a printout to driver at the end of the inspection.