It is probably also the most inexpensive. Mobile satellite telephones are becoming more common and more inexpensive. Please read our radio watchkeeping section for more information. Stay by the radio if possible. Even after the message has been received, the Coast Guard can find you more quickly if you can transmit a signal on which a rescue boat or aircraft can home.
If you hear a distress message from a vessel and it is not answered, then you must answer. If you are reasonably sure that the distressed vessel is not in your vicinity, you should wait a short time for others to acknowledge. Marine radiotelephone equipment normally operates between 2 - 26 MHz using single sideband emissions. See the High Frequency Radiotelephone Channels webpage.
HF radiotelephone channels are normally limited to operational, business, safety or public correspondence purposes. You may use channel 16 to call a ship or shore station, but if you do so, you must, must be brief!
We recommend this same procedure be used over channel 9, if channel 9 is used as a calling channel. Since hoaxes can lead to loss of life, the Coast Guard and Federal Communications Commission will work closely together, using when necessary FCC equipment capable of identifying the electronic signature of the offending radio. One of the most valuable safety features which has been available in fixed mounted VHF radios for a numbers of years, is the single-button distress call feature, called Digital Selective Calling DSC.
Unfortunately, though, based on random surveys taken during Coast Guard Auxiliary safety checks, it is suspected that fewer than half the boats with DSC equipped VHF radios are programmed to use this feature.
With the press of a single button, the DSC feature digitally sends a distress call to rescue personnel over the Global Maritime Distress Safety System. Learn how to program these important safety features in your VHF or hire a marine electronics technician to assist you. Recreational MMSI numbers typically stay with the radio. MMSI numbers issued for recreational craft in U. Some radios allow the original number to be deleted and a second number to be programmed into them.
Others require the radio manufacturer or authorized service technician to delete an MMSI number from a radio, allowing a new number to be programmed into it. Frequencies in the marine VHF sector are assigned channel numbers for ease of use and identification. The letter designation indicated only one of the two available frequencies is used for that channel. Basic Boat Electronics for Beginners. Start by turning on the VHF unit and adjusting the squelch. Turn the squelch knob until you hear static, and then turn the knob back just until the static stops.
Tune the radio to channel 16, which is the channel the Coast Guard constantly monitors. Keep your unit set to channel 16 so you can hear emergency calls or transmissions from the Coast Guard. Do not use channel 16 for a radio check. Read your manual for specific features of your model.
Newer DSC capable radios also allow non-emergency facilitated boat to boat communications. If you hear a distress message from a vessel and it is not answered, then you must answer. If you are reasonably sure that the distressed vessel is not in your vicinity, you should wait a short time for others to acknowledge. Connecticut Department of Energy and Environmental Protection. Do I need a license? If I have a radio do I have to listen to it all the time?
How do I operate it? Make sure you are on the correct channel. Adjust "Squelch" control as low as possible without hearing static or "white noise".
Push the button on the microphone to transmit send. Speak in a normal voice. Take your finger OFF the button to hear the other person.
Which channels should I use? Establish contact on this channel and move to a "working channel" as soon as possible. You may also hear an announcement on Channel 16 to switch to Channel 22A for important information. Also used to request bridge openings. Ships less than 65ft in length maintain a listening watch on this channel in US waters. This is a good channel to listen to in periods of poor visibility so that you can communicate with ferries, freighters, and other large vessels.
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