VHF Radiotelephony
VHF Radiotelephony refers to the use of very high frequency (VHF) radio waves for voice communication in the maritime context. It is a critical component of maritime communication systems, enabling ship-to-ship, ship-to-shore, and on-board communication. VHF Radiotelephony operates within the frequency range of 156 to 174 MHz, providing clear voice communication over short to medium distances, typically up to 60 nautical miles. It is used for a variety of purposes including distress signaling, navigation coordination, weather information exchange, and general communication. The system is characterized by its line-of-sight propagation, meaning the transmission range is largely dependent on the height of the antenna. VHF Radiotelephony is governed by international regulations under the International Maritime Organization (IMO) and the International Telecommunication Union (ITU) to ensure standardized usage and prevent interference between different communication systems.
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