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MMSI is Maritime Mobile Service Identity and a unique 9 digit number that is entered into DSC-marine radio equipment. The MMSI number contain you or your vessel information. When using this equipment to send a distress alert or to indicate some other emergency, the number is transferred into the coast guard’s database to assists the emergency services center to identify you or your vessel and react quickly.  ...

Radio travels as waves… similar to light, and like light, it can be reflected, reduced, or even stopped by other objects. A popular answer is 'line of sight’ which essentially means 'if you can see it, you can talk to it'. This is generally a good guide. You must remember that the radio signal comes from the radio aerial (not the radio itself) and therefore mounting the antenna higher allows the radio to 'see' further.  ...

Here are some basic pointers for VHF marine radio newbies. Even if you're a seasoned hand, it is worth pointing this out and passing it on to green hands aboard. Think of you're loved ones, friends, crew-mates, or passengers in your care completely helpless should you become incapacitated.  ...

For novices, we need to study carefully what the channels of maritime walkie-talkies mean and what functions they have. Below we will introduce the uses of some common channels.  ...

For good reasons, VHF maritime broadcasting is becoming more and more popular with rowers., They can save lives and are easy to use. In maritime communications, they are more effective than CB radios or mobile phones. VHF broadcasting has a more consistent reception than mobile phones. No license is required for use on leisure boats.  ...

Turn your VHF marine radio and pick a channel, set the squelch where you don’t hear any noise, and begin talking. Things to remember when you are on the radio: Monitor CH-16. It is an unwritten rule for marine radio users when you are not actively in conversation with someone else.  ...

DSC is one of the best deals in town. Setting up your VHF radio with digital selective calling is simple, and it could save your life. If you've bought a VHF radio in the last few years, chances are it has a red distress button on the front. Lift the flap, press and hold the button for five seconds, and details of your vessel, your position, and the fact that you require urgent  ...

DSC means that Digital selecting calling is a stand for transmitting pre-defined digital messages via the MF, HF, or VHF maritime radio systems to replace a voice call in older procedures, which is a core part of the GMDSS. DSC signal is stable and has no squelch, so the communication distance is longer than the analog signal. And the transmit speed of the DSC signal is also significantly faster.  ...

Sea fishing/offshore fishing is an exciting sport and popular loved by people. If you wanna do this, as part of your planning, you not only need fishing rods, baits, and other devices but more importantly, a marine handheld radio is a necessary equipment for handling trouble offshore and even saving your life. Marine handheld radio allows you to communicate with others on the sea that is a very important thing. You can request assistance at CH-16 or talk to other fishermen by other channels.  ...

As a world-renowned supplier of walkie talkies, Retevis provides people with the latest technology and quality services. Its retevis marine, as a professional marine radio supply platform, is committed to providing the latest lifesaving technology to more people at sea at an affordable price. Today announced the availability of the new Retevis Marine Floating Handheld marine VHF radio. In an emergency, you can directly contact the coast guard or other vessels to report your exact location.  ...