September 11: A Day We Remember

Today is the 25th anniversary of the terrorist attack on the World Trade Center in New York City, and the Pentagon in Washington, DC.  The attack silenced four FM and nine TV stations in New York City.

Since three of the major television broadcast network owned-and-operated stations had their transmission towers atop the North Tower (One World Trade Center), coverage was limited after the collapse of the tower. The FM transmitter of National Public Radio station WNYC was also destroyed in the collapse of the North Tower and its offices evacuated. For an interim period, it continued broadcasting on its AM frequency and used NPR's New York offices to produce its programming.

The satellite feed of one television station, WPIX, froze on the last image received from the WTC mast; the image (a remote-camera shot of the burning towers), viewable across North America (as WPIX is available on cable TV in many areas), remained on the screen for much of the day until WPIX was able to set up alternate transmission facilities. It shows the WTC at the moment power cut off to the WPIX transmitter, prior to the towers' collapse.

During the September 11, 2001 attacks, WCBS-TV channel 2 and WXTV-TV channel 41 stayed on the air. Unlike most other major New York television stations, WCBS-TV maintained a full-powered backup transmitter at the Empire State Building after moving its main transmitter to the North Tower of the World Trade Center. The station was also simulcasted nationally on Viacom (which at the time owned CBS) cable network VH1 that day. In the immediate aftermath of the attacks, the station lent transmission time to the other stations who had lost their transmitters, until they found suitable backup equipment and locations.

Television coverage of the terrorist attacks on September 11, 2001, and their aftermath was the longest uninterrupted news event in the history of U.S. television.  The major U.S. broadcast and cable networks were on the air for days with uninterrupted coverage from the moment news first came that the first plane hit the World Trade Center.

Millions of shocked television viewers watching live pictures of the World Trade Center saw the second plane hit and both buildings come down. In order to keep up with the constant flood of information, at 10:49 a.m. EDT, Fox News Channel began running continuous updates in the form of a news ticker that crawled along the bottom of the screen. This was so well received by viewers that it became a permanent feature on the channel and was adopted by many other news channels.

Like television, almost all radio stations across the United States put a halt on all programs and commercials to simulcast affiliated news coverage of the attacks from ABC News Radio and CBS Radio News, or taking an audio simulcast of a television news operation, be it local or national, while national morning shows hosted by personalities such as Rick Dees or Howard Stern focused on providing both information about the attacks and call-in forums for listeners to express sympathies.

Local New York all-news radio operations WINS and WCBS, along with Washington's WTOP carried locally based coverage that was simulcast on those sister FM stations without operations destroyed at the World Trade Center as AM operations with transmitters on the outskirts of metropolitan areas were unaffected outside of security concerns for studio and transmitter facilities.

The Emergency Alert System was never activated in the terrorist attacks, as the extensive media coverage made it unnecessary.

XM Radio, a subscription-based satellite radio service headquartered in Washington, D.C., was scheduled to launch on September 12, 2001. As a direct result of the attacks, the launch was delayed until September 25 when the service debuted on a limited basis in San Diego and Dallas.