Wikipedia
WHTZ
WHTZ (100.3 FM) – branded Z100 – is a commercial Top 40 (CHR) radio station licensed to Newark, New Jersey and serving the New York City metropolitan area. Owned by iHeartMedia, WHTZ serves as the flagship station for Elvis Duran and the Morning Show and the New York affiliate for On Air with Ryan Seacrest. The WHTZ studios are located in the AT&T Building in the TriBeCa neighborhood of New York City, while the station transmitter resides atop the Empire State Building.
Besides a standard analog transmission, WHTZ broadcasts over two HD Radio channels, and is available online via iHeartRadio. The station also simulcasts over channel 12 on SiriusXM satellite radio.