It looks like your sheriff and possibly a lot of your other local public safety agencies use this radio system:
NYCOMCO (EDACS) Trunking System, Various, New York - Scanner Frequencies
The BC780XLT should be able to track that EDACS trunked system OK. Most of the talkgroups are shown as being analog, which is good because that is not a digital scanner.
I see from that page that there are three transmitter sites for that system in your county. IIRC with the 780 you would have to devote a different bank to each site in order to scan all three of them. But I would start with just the Schunnemunk Mountain Site first as that has the most frequencies and is therefore likely to be the primary site for Orange County. It may well carry all the county traffic, with the other two being fill-in sites. Add the others later if that one doesn't seem to carry everything, or even if it does it might be good to know what can be heard on the other two sites. You will have to program this as an EDACS system. See the manual ofd8001 sent for detailed instructions on how to do that. You will add the talkgroups that are of interest from that page to your scan lists. Note that that is a big system and has a lot of stuff listed for other counties, so try to pick and choose only what is in your area and of interest to you.
The 780 was one of the best scanners of its time. It's a very good radio, especially for VHF and UHF conventional. I still use mine quite a bit. The country is slowly migrating to digital communications, which the 780 can not decode, but for areas like yours that still have some analog that radio can serve well once you know how to use it. Hope that helps.
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