The 406 MHz system uses a combination of dedicated search and rescue satellites as various orbits combined with cooperating satellite networks to make a world-wide network for the detection of beacons broadcasting a distress signal. The beacons operate on what frequency?

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Multiple Choice

The 406 MHz system uses a combination of dedicated search and rescue satellites as various orbits combined with cooperating satellite networks to make a world-wide network for the detection of beacons broadcasting a distress signal. The beacons operate on what frequency?

Beacons in this global search-and-rescue system transmit at 406 MHz. This frequency supports digital signaling that includes a unique beacon ID and, if the beacon has GPS, its location. Satellites in the Cospas-Sarsat network pick up these 406 MHz transmissions and relay the data to rescue authorities, forming a worldwide detection-and-response network. The other frequencies are used for different purposes: 121.5 MHz is an older analog homing channel, not the satellite-detected distress signal; 2182 kHz is a maritime voice distress frequency; and 2.4 GHz is not part of this SAR system. So the beacons operate on 406 MHz.

Beacons in this global search-and-rescue system transmit at 406 MHz. This frequency supports digital signaling that includes a unique beacon ID and, if the beacon has GPS, its location. Satellites in the Cospas-Sarsat network pick up these 406 MHz transmissions and relay the data to rescue authorities, forming a worldwide detection-and-response network. The other frequencies are used for different purposes: 121.5 MHz is an older analog homing channel, not the satellite-detected distress signal; 2182 kHz is a maritime voice distress frequency; and 2.4 GHz is not part of this SAR system. So the beacons operate on 406 MHz.

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