page_title: Empire State Building
section_title: Broadcast stations
hierarchical_section_title: Empire State Building / Architecture / Features / Broadcast stations
caption_attribution_description: English: "The top of the Empire State Building with a sky view background"
context_page_description: The Empire State Building is a 102-story Art Deco skyscraper in Midtown Manhattan in New York City. It was designed by Shreve, Lamb & Harmon and built from 1930 to 1931. Its name is derived from "Empire State", the nickname of the state of New York. The building has a roof height of 1,250 feet and stands a total of 1,454 feet tall, including its antenna. The Empire State Building stood as the world's tallest building until the construction of the World Trade Center in 1970; following its collapse in the September 11, 2001 attacks, the Empire State Building was again the city's tallest skyscraper until 2012. As of 2020, the building is the seventh-tallest building in New York City, the ninth-tallest completed skyscraper in the United States, the 48th-tallest in the world, and the fifth-tallest freestanding structure in the Americas.
  The site of the Empire State Building, located in Midtown South on the west side of Fifth Avenue between West 33rd and 34th Streets, was originally part of an early 18th-century farm. It was developed in 1893 as the site of the Waldorf–Astoria Hotel. In 1929, Empire State Inc. acquired the site and devised plans for a skyscraper there.
context_section_description: Broadcasting began at the Empire State Building on December 22, 1931, when NBC and RCA began transmitting experimental television broadcasts from a small antenna erected atop the spire, with two separate transmitters for the visual and audio data. They leased the 85th floor and built a laboratory there. In 1934, RCA was joined by Edwin Howard Armstrong in a cooperative venture to test his FM system from the building's antenna. This setup, which entailed the installation of the world's first FM transmitter, continued only until October of the next year due to disputes between RCA and Armstrong. Specifically, NBC wanted to install more TV equipment in the room where Armstrong's transmitter was located.
  After some time, the 85th floor became home to RCA's New York television operations initially as experimental station W2XBS channel 1 then, from 1941, as commercial station WNBT channel 1 (now WNBC channel 4). NBC's FM station, W2XDG, began transmitting from the antenna in 1940. NBC retained exclusive use of the top of the building until 1950 when the Federal Communications Commission (FCC) ordered the exclusive deal be terminated. The FCC directive was based on consumer complaints that a common location was necessary for the seven extant New York-area television stations to transmit from so that receiving antennas would not have to be constantly adjusted. Other television broadcasters would later join RCA at the building on the 81st through 83rd floors, often along with sister FM stations. Construction of a dedicated broadcast tower began on July 27, 1950, with TV, and FM, transmissions starting in 1951. The broadcast tower was completed by 1953. From 1951, six broadcasters agreed to pay a combined $600,000 per year for the use of the antenna. In 1965, a separate set of FM antennae was constructed ringing the 103rd floor observation area to act as a master antenna.
  The placement of the stations in the Empire State Building became a major issue with the construction of the World Trade Center Twin Towers in the late 1960s, and early 1970s. The greater height of the Twin Towers would reflect radio waves broadcast from the Empire State Building, eventually resulting in some broadcasters relocating to the newer towers instead of suing the developer, the Port Authority of New York and New Jersey. Even though the nine stations who were broadcasting from the Empire State Building were leasing their broadcast space until 1984, most of these stations moved to the World Trade Center as soon as it was completed in 1971. The broadcasters obtained a court order stipulating that the Port Authority had to build a mast and transmission equipment in the North Tower, as well as pay the broadcasters' leases in the Empire State Building until 1984. Only a few broadcasters renewed their leases in the Empire State Building.
  The September 11 attacks in 2001 destroyed the World Trade Center and the broadcast centers atop it, leaving most of the city's stations without a station for ten days until a temporary tower was built in Alpine, New Jersey. By October 2001, nearly all of the city's commercial broadcast stations (both television and FM radio) were again transmitting from the top of the Empire State Building. In a report that Congress commissioned about the transition from analog television to digital television, it was stated that the placement of broadcast stations in the Empire State Building was considered "problematic" due to interference from other nearby towers. In comparison, the Congressional report stated that the former Twin Towers had very few buildings of comparable height nearby thus signals suffered little interference. In 2003, a few FM stations were relocated to the nearby Condé Nast Building to reduce the number of broadcast stations using the Empire State Building. Eleven television stations and twenty-two FM stations had signed 15-year leases in the building by May 2003. It was expected that a taller broadcast tower in Bayonne, New Jersey, or Governors Island, would be built in the meantime with the Empire State Building bei
caption: Antennae for broadcast stations are located at the top of the building
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