bkzsupreme,
The Suffolk County system for Police/Fire/EMS is a Motorola Type II SmartZone trunking system and the system information is found
here. The Suffolk County trunking system is specified
here and has talkgroups for Police, Sheriff, Fire, EMS and others. One or more sites for this trunking system have gone through the 800 MHz rebanding process. Reference this
Rebanding Wiki for information on which scanners will and will not work for this system.
For New York City, FDNY is also using a Motorola Type II SmartZone trunking system and the system information is found
here. The New York City DoITT (800 MHz) system is specified
here and has talkgroups for Sheriff, FDNY, EMS and others.
That is a lot of information so I'm sure you will have questions. Especially look over the
Rebanding Wiki since it has specific information on the type of scanner you will need for your scanning interests.
Finally,
Welcome to Radio Reference!
Cheers! Dave