by Polaris RDF Admin | Dec 20, 2018 | Uncategorized
Why 121.5 MHz Will Always Be Needed The 121.5 MHz frequency for alerting to the Cospas-Sarsat satellites was phased out completely on the 1st of February in 2009. The decision to do this was approved in February 1999 with a 10-year phase-out period. Cospas-Sarsat...
