I'm a little confused as far as how many different systems I can put on the PRO-106. I'm a truck driver that runs the same route every week across five different states. I have the local system programmed in, but was wondering if I can also have up to four more systems from other states on the scanner at the same time? To be run separately as I go across these other states. Is this something I would load into the V-Scanner to pull up as needed? I'm very new to this digital scanning, and this scanner also, and tha manual is somewhat confusing about some things too. Thanks for any info.