Emergency Position Indicating Radio Beacon
EPIRB 406 MHz2182 MHz
4431.8 kHz
8291.1 kHz
https://www.google.com.br/search?q=EPIRB&oq=EPIRB&aqs=chrome..69i57j69i60l3&sourceid=chrome&ie=UTF-8
https://cospas-sarsat.int/en
http://www.popa.com.br/docs/cronicas/epirb/