For example my 536 receives the New York City DoiTT
If you're talking about the DoiTT system for the FD's handi-talkies, fireboat operations, etc, that's a 400 system.
They just call it "the 800 radio" because they don't know any better. They use to be on the 800 system, but when they changed it, they just took the 800 radios out and put the 400 radios in, and didn't tell anyone that it was different.
It's probably the biggest misnomer in public service communications.
If you're talking about the original NYC 800 radio, I didn't think there was anything worthwhile to listen to on that anymore.
In any respect, I don't think with ANY of these new and newer radios, you're going to have consistent reception, especially in the NYC area. The "receive" end is so critical, and transmitters so geographically spread out, that there's got to be serious variations no matter how centrally located you are.
At least with the old VHF systems, the higher the antenna the better your signal, no matter where you were.