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  2. These Are the Best Emergency Radios to Keep You Updated ...

    www.aol.com/lifestyle/best-emergency-radios-keep...

    The best emergency weather radios are compact, portable, durable, and have backup power sources—via hand crank, batteries, or solar panels—so you’re never caught with a dead radio.

  3. Emergency position-indicating radiobeacon - Wikipedia

    en.wikipedia.org/wiki/Emergency_position...

    An emergency position-indicating radiobeacon (EPIRB) is a type of emergency locator beacon for commercial and recreational boats, a portable, battery-powered radio transmitter used in emergencies to locate boaters in distress and in need of immediate rescue. In the event of an emergency, such as a ship sinking or medical emergency onboard, the ...

  4. Automatic Packet Reporting System - Wikipedia

    en.wikipedia.org/wiki/Automatic_Packet_Reporting...

    APRS beacon transmitter with GPS receiver. Automatic Packet Reporting System (APRS) is an amateur radio -based system for real time digital communications of information of immediate value in the local area. [ 1 ] Data can include object Global Positioning System (GPS) coordinates, non-directional beacon, weather station telemetry, text ...

  5. Emergency communication system - Wikipedia

    en.wikipedia.org/wiki/Emergency_Communication_System

    An emergency communication system (ECS) is any system (typically computer-based) that is organized for the primary purpose of supporting one-way and two-way communication of emergency information between both individuals and groups of individuals. These systems are commonly designed to convey information over multiple types of devices, from ...

  6. Amateur radio emergency communications - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_emergency...

    Solar-powered Amateur Radio Station in tents. Note the portable VHF/UHF satellite and HF antennas in the background Rugged HF transceiver for voice communications. In times of crisis and natural disasters, amateur radio is often used as a means of emergency communication when wireline, cell phones and other conventional means of communications fail.

  7. Very high frequency - Wikipedia

    en.wikipedia.org/wiki/Very_high_frequency

    V. VI. v. t. e. Very high frequency (VHF) is the ITU designation [1] for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter. Frequencies immediately below VHF are denoted high frequency (HF), and the next higher frequencies are known as ultra ...