Emergency Broadcast SystemThe Emergency Broadcast System (EBS), sometimes called the Emergency Action Notification System (EANS), was an emergency warning system used in the United States. It was the most commonly used, along with the Emergency Override system. It replaced the previous CONELRAD system and was used from 1963 to 1997, at which point it was replaced by the Emergency Alert System.
Integrated Public Alert and Warning SystemThe Integrated Public Alert and Warning System (IPAWS) is the primary public warning system of the United States, implemented as a platform that unifies the Emergency Alert System, National Warning System, Wireless Emergency Alerts, and NOAA Weather Radio under a single architecture. IPAWS was designed to modernize these systems by enabling alerts to be aggregated over a network and distributed to the appropriate system for public dissemination concurrently.
Wireless Emergency AlertsWireless Emergency Alerts (WEA), formerly known as the Commercial Mobile Alert System (CMAS) and, prior to that, as the Personal Localized Alerting Network (PLAN), is an alerting network in the United States designed to disseminate emergency alerts to cell phones using Cell Broadcast technology, similar to the radio and television counterpart, the Emergency Alert System.
Emergency population warningProblems playing this file? See .Problems playing this file? See .An emergency population warning or public warning system is a method whereby local, regional, or national authorities can contact or notify members of the public to warn them of an impending emergency.
Emergency override systemAn emergency override system (also known as cable override or emergency alert system, among other terms) is a system designed to warn subscribers of cable television broadcast feeds of threats such as severe weather and other civil emergencies. HistoryOne of the earliest alerting systems developed specifically for cable television was implemented in the city of Alexandria, Louisiana in 1962 by Alpine Cable TV Co., a Louisiana-based cable television company.
AM broadcastingAM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions, and is still used worldwide, primarily for medium wave (also known as "AM band") transmissions, but also on the longwave and shortwave radio bands.
Terrestrial televisionTerrestrial television, or over-the-air television (OTA), is a type of television broadcasting in which the content is transmitted via radio waves from the terrestrial (Earth-based) transmitter of a TV station to a TV receiver having an antenna.
Satellite radioSatellite radio is defined by the International Telecommunication Union (ITU)'s ITU Radio Regulations (RR) as a broadcasting-satellite service. The satellite's signals are broadcast across a much wider geographical area than terrestrial radio stations, and the service is primarily intended for the occupants of motor vehicles.
Satellite televisionSatellite television is a service that delivers television programming to viewers by relaying it from a communications satellite orbiting the Earth directly to the viewer's location. The signals are received via an outdoor parabolic antenna commonly referred to as a satellite dish and a low-noise block downconverter. A satellite receiver decodes the desired television program for viewing on a television set.
Cable televisionCable television is a system for delivering broadcast programming to viewers by radio frequency (RF) signals transmitted through coaxial cable and through fibre-optic cable.
Federal Communications CommissionThe Federal Communications Commission (FCC) is an independent agency of the United States federal government that regulates communications by radio, television, wire, internet, Wi-Fi, satellite, and cable across the United States. The FCC maintains jurisdiction over the areas of broadband access, fair competition, radio frequency use, media responsibility, public safety, and homeland security.
FM broadcastingFM broadcasting is a radio broadcasting method that uses frequency modulation (FM) transmissions. In November 1919, Hans Idzerda began broadcasts, using narrow-band FM, over station PCGG, located at The Hague in the Netherlands. However, most early broadcasting stations instead employed Amplitude Modulation (AM) transmissions. In 1933, American engineer Edwin Armstrong began development of wide-band FM.*As an Amazon Associate I earn from qualifying purchases.