Application Of VHF Marine Radio
As a communication tool, two way radio has a long history. Maritime radio is the first representative of radio to enter the field of navigation. Radio was widely used in shipping industry, from the earliest radio telegraph to the radio station later, and now the more advanced maritime satellite communication system. Marine VHF radio is a kind of system intercom, which is widely used in the instant communication between ship and coast radio, ship and port radio station, ship and ship, and also becomes the most common communication tool for ships to listen to ship dynamic, weather warning and distress call for help.
According to the working frequency, the marine radio includes HF short wave radio and VHF marine radio. HF radio is mainly used for long-distance communication. In the era of satellite telephone not yet popular, ocean fishing boats mainly rely on short wave radio to establish communication with companies and bases, and even a telephone system based on short wave radio connection. VHF marine radio is mainly used in close distance direct communication, and it is the main tool for communication between ships and ports, docks and ships. In the aspect of maintaining the sea power to drive away illegal foreign ships and maintaining the navigation safety of domestic fishermen, in close proximity, in addition to using the loudspeaker of high pitched loudspeaker, communication with the other ship is mainly established through VHF marine radio channel, and the announcement and warning shall be broadcast.
As a professional marine radio, generally speaking, only channel is used instead of direct frequency of notification. Global professional marine VHF radio is to directly switch channel display channel, rather than amateur radio equipment, it is easier to hear the channel number of notification in actual operation (less number of notification). It's a little bit like we watched radio TV in the 1980s and 1990s, just remember the channel rather than the frequency.
The marine radio has high waterproof grade and reliability, and has good stability. Therefore, the price of professional marine VHF radio is higher than that of amateur radio and commercial radio. It is important to know that the only communication tool for ships drifting on the sea at many times is marine VHF radio, especially those without maritime satellite communication system. Therefore, it is recommended that friends who play yachts should assemble professional marine VHF radio.
