I forget what's actually there. Here's an look at earlier times for the antenna...
http://www.tech-notes.tv/History&Tri...les/ESB006.JPG
1967 Facilities
Today the Empire Slate Building occupies a unique position in the broadcast industry. It furnishes leased vertical space of 317 feet for the antennas of 22 stations. Between the 80th and 85th floors arc housed 35 separate broadcast transmitters with a combined total RF output power of over 400 KW. The Empire state Building Co. owns the master FM antenna and leases it to individual FM stations � perhaps the only such situation in the world. The company also has responsibility for general maintenance of the TV lower.
The tower is provided with a code beacon, and there is obstruction lighting at three lower levels. The mooring-mast section of the building is illuminated by flood-lights. FCC rules with respect to tower painting are waived in favor of tower lighting 24 hours per day.
The Future
Some time ago, a feasibility study was conducted by a consulting engineering firm for the Empire State Building Co. This study showed that the mooring mast could hold several more UHF antennas. Currently a CP is held by WTVE (ch. 41). licensed to Patterson, N. J., which proposes another antenna on the building. Another FM station is considering using the master FM antenna. Also, WABC-FM, WCBS-FM. and WNDT plan to install new antennas during the summer of 1967.
The world's most unusual antenna site may not exist much longer. Recently, the Port of New York Authority has been planning the construction of twin 110-story skyscrapers in Lower Manhattan. Independent studies by Alford Manufacturing Co, and Jansky and Bailey have shown that the proposed towers would cause ghosting to some viewers watching some of the TV stations presently on the Empire State Building. Several solutions to the program have been advanced, one being to relocate antennas from Empire State to the new, taller structures (to be known as the World Trade Center).
Whatever the future of the Empire State Building antenna site. it remains a monument to the ability of broadcast engineers and stations to cooperate for their mutual welfare and for the public benefit.