Tag Archives :HF

Retevis RM40 is a professional compact marine water-proof VHF radio, which is suitable for marine operations, such as fishing at sea, oil production at sea, ship extradition at port, channel distress alarm, etc.  ...

Retevis RA27 is a powerful VHF / DSC marine VHF radio, with AIS receiver and NMEA connection functions. The RA27’s front face is so compact that it matches the size of a modern smartphone. However, despite its small size, it has all the hallmarks of design, ease of use and performance.  ...

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  ...

When building a radio communication system on board, multiple antennas, such as satellite receiving antenna, GPS positioning antenna and VHF marine radio antenna are needed. Most of these antennas are all omnidirectional FRP antennas. Why to use them and what characteristics they have, I will talk to you today about this omnidirectional FRP antenna.  ...

In recent years, with the vigorous development of water industry, water traffic is more and more developed, communication safety is more and more important, and the use of maritime walkie talkie is more common. Summarize some of the most common faults and solutions in daily use for users' reference.  ...

The communication distance of maritime radio is generally far, because the environment is relatively open, reducing the loss of radio waves. But relying on the environment alone can not make the maritime VHF radio have a good communication signal. Here are some methods to improve the signal intensity of marine radio.  ...

VHF radio lets boaters have two-way contact with other vessels, rescue services, and anyone else using VHF radios. While they used to be a one-size-fits-all product, these days they have a range of extra features that may better suit your requirements. Here are the features you can choose from at your next marine radio installation.  ...

If you have a DSC-equipped radio, flip up the cover on the DSC button and press the button for 3 to 5 seconds. Some radios will allow you to choose your problem from a list (Fire/Explosion, Flooding, Collision, Grounding, Capsizing, Sinking, Adrift, Abandoning Ship, Piracy, Man Overboard) so that vessels receiving your transmission will automatically know what happened.  ...

The Coast Guard must respond to about 60,000 emergency calls each year (while saving nearly 5,000 lives annually) using limited resources. According to Coast Guard say, “Of the roughly 100 digital selective calling distress alerts we are now receiving each month, approximately nine out of 10 do not have position information (i.e., do not have a GPS navigation receiver interconnected to their DSC-equipped VHF radio), and approximately six out of 10 have not registered their MMS  ...

The ability to call for help or signal for assistance is imperative. With a VHF or DSC radio you can transmit a Mayday call to the Coastguard and other vessels and a distress or emergency beacon will transmit your location to the search and rescue services  ...