GMDSS - GLOSSARY OF TERMS


Browse the glossary using this index

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U

UHF

Ultra High Frequency. (300 to 3 000 MHz)

UPS

Uninterruptible Power Supply.

USB

Upper Sideband mode of emission. A form of single sideband emission where only the upper sideband is transmitted.

UTC

Temps Universel Coordonné (French). Coordinated Universal time (replaces Greenwich Mean Time (GMT) for practical purposes).