When activated, an emergency locator transmitter (ELT) transmits on which frequencies?

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Multiple Choice

When activated, an emergency locator transmitter (ELT) transmits on which frequencies?

Explanation:
An ELT’s purpose is to broadcast a distress signal so rescuers can locate you. The traditional distress beacons operate on two frequencies: 121.5 MHz in the civil VHF band and 243.0 MHz in the UHF band. These two frequencies are monitored by search-and-rescue resources and are used for homing, helping rescuers pinpoint the beacon’s location on the ground. Some newer ELTs also transmit on 406 MHz to reach the satellite-based COSPAS-SARSAT system, but the signals most directly used for local homing are 121.5 and 243.0, which is why this option is the best fit. The other frequencies listed aren’t the standard two-frequency distress beacon pair.

An ELT’s purpose is to broadcast a distress signal so rescuers can locate you. The traditional distress beacons operate on two frequencies: 121.5 MHz in the civil VHF band and 243.0 MHz in the UHF band. These two frequencies are monitored by search-and-rescue resources and are used for homing, helping rescuers pinpoint the beacon’s location on the ground. Some newer ELTs also transmit on 406 MHz to reach the satellite-based COSPAS-SARSAT system, but the signals most directly used for local homing are 121.5 and 243.0, which is why this option is the best fit. The other frequencies listed aren’t the standard two-frequency distress beacon pair.

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