Suffolk County Comms is also known as Long Island Radio, but they have repeaters/sites at several locations on and off Long island as do many private carrier radio companies
Popular sites are usually the North shore towers building in queens, a big commercial radio tower in Plainview near the 495 and some mountain in New jersey
Those locations have good elevation so putting repeaters there makes for decent coverage in the tri state
The activity on the system is mainly school buses, tow trucks and oil trucks so far
I too have been getting 462.5375 here in Nassau ny coming up as "Site 4" which is not confirmed yet
462.5375 is licensed at most of the sites in both NY and NJ so im wondering if its actually a simulcast site...