Guide of VHF Marine Radio
This guide goes someway to explain suitable radio products used to communicate at sea.
VHF Marine Radio
The most popular way of communicating at sea is via a marine VHF (Very High Frequency) set. These are combined transmitter/receivers that operate on allocated frequencies known as ‘channels’. Marine VHF radios are used for a variety of purposes including; contacting harbours, marinas, locks, summoning the rescue services and ship-to-shore or ship-to-ship communication. To prevent maritime transmissions creating interference with other radio users, a section of the radio spectrum has been allocated specifically for marine communications.
Fixed or panel-mount VHF Marine radio
Retevis fixed mount radio has DSC calling capability, allowing you to alert other boats, ships and shore stations with the single press of a button. These DSC capabilities include; position polling, a variety of group calling options and the ability to connect to a remote microphone and act as an inter-ship intercom system. Fixed radios do require installation, including connection to a power source, VHF antenna and GPS antenna. When siting your radio, you should think about how it will be used. You will probably need it whilst navigating and at the helm when entering or leaving port. Think carefully before installing.
Handheld VHF Marine Radio
Handheld VHF Radio work in exactly the same way as their fixed equivalents. Many of the features are shared to help users who use both types. As with any tool there are advantages and disadvantages. Handheld advantages include small size and portability, usefulness in an emergency, should a vessels electrical power fail, independence from the vessel's power and antenna, and value. Disadvantages are related to the power output and battery life, which affects range and how long the handheld can be used.
To summaries, compact size makes handhelds more suitable for small vessels without their own battery source; or as emergency back-up for fixed radios or as additional radios for crew and use in tenders etc.
