September 2014- Five-and-a-half years ago, Search and Rescue Satellite (SARSAT) monitoring of the 121.5 MHz and 243 MHz emergency frequencies ceased. Citing statistics that indicated many more false alarms than actual emergencies, the international consortium that administers the global network of search and rescue programs called for mandatory conversion to a new system operating on 406 MHz beginning Feb. 1, 2009.
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