Tag Archives :VHF

This paper introduces some basic functions of retevis RM40 maritime radio, which solves some use problems for some users who are not familiar with VHF marine radio. However, RM40 also has some special functions, which are also concerned. It is because of these special functions that it shows its uniqueness. Here is a brief introduction to these features.  ...

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.  ...

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.  ...

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.  ...

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  ...

How to broadcast a MAYDAY emergency call if a vessel or person is in grave and imminent danger and immediate assistance is required: Check that your VHF radio is on and high power setting is selected  Select Channel 16 (or 2182kHz for MF)   ...

There are many ways to communicate with others at sea. What makes the VHF DSC radio the best form of short range communication and why is it recommended?  ...

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.  ...

Now, if you want to use VHF marine radio, you must have relevant certificates. If you don't have relevant certificates, you will encounter some troubles. So how can we get the relevant documents and what are they? Now we have taken Australia as an example to introduce some documents.  ...