Some older EPIRB's used the aircraft distress frequencies of 121.5 and 243 MHz, but required an over-flying aircraft before detection. Some personal EPIRB's transmit only on the aircraft and regional mode SARSAT/COSPAS frequency 121.5 MHz. EPIRB's require little maintenance, except to check their operation by use of the ’test’ function, and to
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EPIRBs are designed specifically for maritime applications. They quickly alert authorities as to the whereabouts of distressed vessels and their crews, while PLBs (as their name suggests) alert authorised as to the whereabouts of individuals. PLBs are suitable for use in a range of applications, including bush walking, 4×4 driving and remote work.
Remember, a SART is not an alternative to an EPIRB, they are designed to fulfill two completely different functions. All things being equal, the ideal situation of course is to have both. If you are just beginning the fitting out of your boat, the question may arise whether the purchase of an EPIRB or a SART is in your best interest.
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how to use epirb and sart
