Vhf Radios

A marine VHF radio is a special worldwide system of two-way radio transceivers. These communication systems are common on watercraft and ships used for bidirectional audio communication from one water mobile to another (ship to ship) or ship to shore.

A VHF radio uses an FM channel in the Very High Frequency or VHF radio band. It is a special frequency range between 156 to 174 MHz. This special marine VHF radio equipment is installed on large ships and most seagoing small crafts. It is also used with slightly different regulations on lakes and rivers. These communication devices are used for a wide variety of purposes. They commonly include marine navigation, traffic control, communication harbours, bridges, locks, marines and summoning rescue services. However, with advancements in technology, there are several different variations on the product. Hence you need to know the product in detail before heading for a purchasing venture. Here we are going to share some basic information. But you might need more than that to buy a multipurpose item for use.

Everything you need to know about VHF marine radio

When we talk about communication on a marine VHF radio, we actually talk about a serious piece of safety equipment regulated by the FCC and the official coast guard services. It can provide a critical communication link to potential rescuers if an in-water emergency is properly used. So you can expect to use them to access NOAA weather forecasts, notices to marine, or navigation alerts. You can also use them to communicate with passing ships or invite the neighbouring boat crew in an anchorage over the sundowners etc. Such so many jobs to do, these devices come with many features that are important to get knowledge of before heading to buy a marine radio.

Basics about a VHF radio

The first thing you need to understand is that these radios are not toys. So when you have a handheld VHF radio, avoid talking like a trucker on a CB; make sure you are not clogging any important channel with useless chatter. Also, never make a false Mayday call. It can lead you to some severe charges besides that someone might lose the chance to get help for saving a life. Secondly, you must always monitor channel 16. So if you receive any distress call, record it as well as your position in the log and start preparing to render assistance if possible. Thirdly, always press a trigger when sending a message and speak while keeping the microphone closer to your mouth.

Understand knobs on a VHF radio

On standard VHF, you will find a power control and a squelch control set that points at which random noise on the channel does not activate the audio circuit, but a received signal does. You can set the setting by turning the knob clockwise. The channel selector is another knob on your VHF used to jump from one channel to another. You can also use this to confirm memory channel buttons. The 16/9 knob is a quick press button that recalls channel 16. But holding this button down can tune the radio channel to 9. Other important knobs include WX; PA/Fog; Scan/Mem; DX/IC; H/L; Menu/Call; ENT;  Clr; or distress.

Construction of the handset

It contains a PTT (push to talk) button that triggers the transmitter when the transceiver is in radio mode. It also contains a microphone that transmits any voice message after reducing background voices. You will also see an up and down arrow button that allows manual channel selection from the handset. The 16/9 key works the same as the 16/9 key on the radio and hails or communicates with other boats. For an accurate handling procedure, you should read the user manual that comes with the device you are about to water with you.

About making Mayday calls

As said earlier, you should only make a Mayday call when you are in a serious problem and entirely helpless. So if you find yourself in any imminent life-threatening situation, make sure your radio is tuned to channel 16. After that, you will need to make the following radio transmissions. Also, during the communication process tries not to panic and deliver your message clearly. Start by pressing the mic and say Mayday three times, following by the name of your boat. Wait for about 3 seconds and repeat the same. Now report your position as accurately as possible, and explain the nature of the emergency you have. Also, mention the type of assistance you want and provide details about board members and wait for a response.