Beacons operating on 121.5 MHz and 243.0 MHz only simply transmit an anonymous siren tone, thus carry no position or identity information to SAR agencies. Such beacons now rely solely on the terrestrial or aeronautical monitoring of the frequency.
beacons operating on 1215 mhz and 2430 mhz only simply transmit an anonymous siren tone thus carry no position or identity information to sar agencies such beacons now rely solely on the terrestrial or aeronautical monitoring of the frequency