Tag Archives :VHF

So what is an antenna exactly? It is a device that takes an oscillating electric current and radiates that energy in the form of electromagnetic radiation and vice versa; depending on whether you are receiving or transmitting. More simply, it converts electric power into radio waves or radio waves into electric power. Understanding the important characteristics of the marine VHF antenna will allow you select the right antenna to best fit your vessel and your specific needs.  ...

The low cost VHF Marine Radios, whether they are fixed or handheld, provides you with basic functionality. This means, that they will provide basic communications well, but will not likely to have additional features. The performance of the radio will be quite adequate and help keep you safe while on the water.  ...

The reach of a two-way radio is largely dependent on the output power of the radio. This is measured in watts. As an example, a typical fixed mount radio outputs at 25 watts and is good for a range of in excess of 50 km unobstructed. Handheld radios typically transmit at 5 to 6 watts and are therefore good for a range of 12 to 18 kms.  This is only a rough measure as other aspects affect the effective range of a VHF radio. The antenna type, design and length will have an effect on range.  ...

There are many ways to communicate with others at sea ranging from signal flags to satellite phones. While it is not a legal requirement in most countries, leisure sailors are strongly encouraged to use a VHF DSC (Digital Selective Calling) Radio as their primary means of communication, since this is used by the rescue authorities and commercial shipping.   ...

Nowadays, people pay more and more attention to communication efficiency. We can see two way radios in many industries, such as hotels, shopping malls, restaurants, etc. of course, we also use two way radio on board. This also shows the importance of two way radios in these occasions. Today, let's talk about the importance of marine VHF radio.  ...

What do you do when you are trapped fishing on the island? What happens when your ship suddenly runs out of oil? At this time, if you don't bring any communication equipment, you can only listen to fate. If you bring it, Congratulations, you can get help. Of course, if you use a mobile phone at this time, pray that it has a signal, otherwise it can only be a toy. If you have a marine VHF radio in your hand, you can be happy.  ...

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  ...

In a few weeks, various sailing competitions will be held one after another. Many people began to prepare various equipment, and many enthusiasts participated in the training. The coaches in the training center will do their best. Therefore, almost every coach must have a VHF marine radio.  ...

Look at why you need a VHF marine radio and ask yourself “ what is best for me?” If you want to move onto venturing further out to sea, a small budget fixed radio providing the extra range may be worth considering. A large yacht sailing further offshore will need greater range so a fixed mount radio will be a better solution. And all boat and yacht should consider AIS function.  ...

Retevis powerful VHF RA27 marine radios have been designed for both OEM and aftermarket applications. Featuring an updated industrial design and sleek aesthetics. The RA27 is Retevis’s entry-level radio, offering 25W of transmit power and Class D Digital Selective Calling (DSC) compatibility via NMEA 2000.  ...