Your saying that I could program in 30 sites and be able to monitor them at one time while driving around? I know however that I'm only going to pick up 3 or so in the area I live, but I'll still be monitoring 30 sites theoretically spealing. With my BC250D I could only monitor 10 sites because if 10 banks.
Yes, you could. The best way to do that would be to program the system as MultiSite STAT. This will have it check each active control channel during the scan cycle - unless you opt to tell it not to scan all CCs, in which case I think it'll scan what it can within the dwell time that you set.
You can have separate TSYS objects for each MARCS site, or if the control channels of the sites you want to monitor will fit into the 32-channel per TSYS object maximum, then you could monitor something between 16 and 32 MARCS sites with one TSYS object, depending on whether you have only the currently active control channels in or all the control channels programmed in that the system may use. The Multisite selection has different options - If you set it to STAT and you drove around day to day, it would scan each site whose control channel it would hear at any given time and skip over those sites whose control channels it could not hear. A very handy feature.
Remember, the more TSYS objects you have, the quicker you use up the available memory - and the more TGIDs you have programmed in, the quicker you use up your memory. THere are a lot of TGIDs in the MARCS system, and you likely will never hear more of them than a few dozen - so program in the most popular ones for the areas you will be in, add a wildcard talkgroup, and set up a single TSYS and run it Multisite STAT and you'll have plenty of room for all kinds of other things as well.
Mike