EPIRB /EPIRB-AIS (Emergency Position-Indicating Radio Beacon) Vanligvis brukt for skip, ELT (Emergency Locator Transmitter) Vanligvis brukt for fly, PLB (Personal Locator Beacon) Vanligvis brukt for personer. VHF Nødpeilesender DSC kanal 70 for skip, SART/AIS-SART 3cm radar transponder for skip,