Tuesday, 25 January 2022, 5:31 AM
Site: eGMDSS E-learning system
Course: Tečaj za Long Range Certificate (LRC-SI)
Glossary: Slovar

HF

High frequency - same mean as long wave (LW). Frequency bands from 3 to 30 MHz. For distress calls in sea areas A3 and A4 HF frequencies should be used.

HRU

Hydrostatic Release Unit - It is a device that will automatically release the EPIRB once a depth of approximately 4-5 m is reached.