406 MHz Frequency

The 406 MHz frequency is a radio frequency used in aviation for emergency locator transmitters (ELTs) and personal locator beacons (PLBs). These devices are used to transmit distress signals in the event of an emergency, such as a crash or other incident. The 406 MHz frequency is used because it is monitored by search and rescue organizations worldwide, and provides a more accurate location of the distress signal than previous frequencies. In addition, the 406 MHz frequency allows for digital data transmission, which can include information about the aircraft or individual in distress, further aiding in search and rescue efforts.
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