Marine VHF radios are now installed on all large boats and yachts and are considered as an important safety item on all marine fairing craft. These radios operate in the VHF (very large frequency) range of 156 to 174 MHz.
Frequency modulation with vertical polarization is used by all transmitting sets. As a result, the flying must be mounted vertically to achieve a very spectacular reception. To get more information about marine VHF radio you can visit https://kampetorpmarin.se/marin/instrument-navigation/vhf/vhf-radio.html.
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Transmission power is generally between one and twenty-five watts for adjusted radios one and three watts for handheld sets. More expensive handsets are available that have an increased maximum output of six watts.
The selection of a twenty-five-volt transmission in the sea is approximately 60 nautical miles, presuming that the aerial is mounted on a tall boat or mast. If the aerial is mounted at sea level the range would drop to roughly 5 nautical miles (9 km).
Marine VHF radios have a lot of purposes, the most important being to signal for assistance when a boat is in trouble, but also for communication with ports, bridge management channels and marinas.
All modern fixed mount radios should possess some DSC (Digital Selective Calling) capability. DSC is also an important part of the Global Maritime Distress Safety System (GMDSS). It helps the user to send a distress signal at the touch of a button.
The sign is a preformatted material that comprises the vessel identification, and when attached to a GPS device, the place. This makes the marine VHF radio act more like a telephone. Groups of vessels can also be called using a group identity, this is often used for yacht races.