Which frequency is associated with emergency location transmitters (ELTs)?

The frequency associated with emergency location transmitters (ELTs) is 121.5 MHz. This frequency is designated as the international distress frequency for aviation. ELTs are crucial safety devices used in aircraft that transmit signals to help locate downed aircraft or those in distress. When activated, they emit a signal on this specific frequency, enabling search and rescue teams to pinpoint their location quickly.

In addition to 121.5 MHz, ELTs are also being updated to transmit on 406 MHz, which provides more precise location data and is linked to satellite systems for improved global coverage. However, the original frequency for distress signals, especially for ELTs in the past, remains 121.5 MHz, making it essential for anyone working with or around aircraft to be familiar with this frequency for effective emergency response.

The other frequencies listed, while they may be used in aviation communication, do not serve as the designated emergency frequencies for ELTs.