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United States. [] In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens.
FRS: FRS channel 1: 462.5625 MHz (carrier squelch, no tone or sub-channel), channel 3: 462.6125 MHz [16] and channel 20: 462.6750 MHz (141.3 Hz CTCSS - channel 20, code 22 or channel 20-22). UHF CB (Australia): Emergency channels 5/35 (476.525/477.275 MHz). [17] Channel 5 is the designated simplex and repeater output emergency channel, while ...
Replaced. Emergency Broadcast System, Local Access Alert. The Emergency Alert System (EAS) is a national warning system in the United States designed to allow authorized officials to broadcast emergency alerts and warning messages to the public via cable, satellite and broadcast television and AM, FM and satellite radio.
Emergency Alert System. The 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 ...
REACT (Radio Emergency Associated Communication Teams) is a CB radio Emergency Channel 9 monitoring organizations across the United States, Canada and worldwide, established in 1962. The primary role of REACT volunteers was to stand and watch on CB Emergency Channel 9 to help motorists. Later, duties grew to include radio communications after ...
A distress signal, also known as a distress call, is an internationally recognized means for obtaining help. Distress signals are communicated by transmitting radio signals, displaying a visually observable item or illumination, or making a sound audible from a distance. A distress signal indicates that a person or group of people, watercraft ...
Mayday. Mayday is an emergency procedure word used internationally as a distress signal in voice-procedure radio communications. It is used to signal a life-threatening emergency primarily by aviators and mariners, but in some countries local organizations such as firefighters, police forces, and transportation organizations also use the term.
Specific Area Message Encoding (SAME) is a protocol used for framing and classification of broadcasting emergency warning messages. It was developed by the United States National Weather Service for use on its NOAA Weather Radio (NWR) network, and was later adopted by the Federal Communications Commission for the Emergency Alert System, then subsequently by Environment Canada for use on its ...