Radiotelephone Calls

VHF Marine Radio Protocols

Radiotelephone Calls

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Boaters may make and receive radiotelephone calls to and from any number on the telephone network by using the services of public coast stations. Calls can be made — for a fee — between your radio and telephones on land, sea and in the air. See the Appendix for the public correspondence (marine operator) channels.

If you plan to use these services, consider registering with the operator of the public coast station that you plan to work through. These services can provide you with detailed information and procedures to follow.

NOTICE

You may disclose privileged information during a radiotelephone call. Keep in mind that your transmission is NOT private, as it is on a regular telephone. Both sides of the conversation are being broadcast and can be heard by anyone who has a radio and tunes to the channel you are using.

Emergency Messages and

Distress Procedure

VHF Marine Radio Protocols

Emergency Messages and Distress Procedure

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The ability to summon assistance in an emergency is the primary reason to have a VHF marine radio. The marine environment can be unforgiving, and what may initially be a minor problem can rapidly develop into a situation beyond your control.

The Coast Guard monitors Channel 16, responds to all distress calls,

and coordinates all search and rescue efforts. Depending on the availability of other capable vessels or commercial assistance operators in your vicinity, Coast Guard or Coast Guard Auxiliary craft may be dispatched.

In any event, communicate with the Coast Guard as soon as you experience difficulties and before your situation becomes an emergency. Use the emergency message procedures only after your situation has become grave or you are faced with a sudden danger threatening life or property and requiring immediate help. Use Channel 16 to communicate your emergency message. Make sure you transmit on high power. If you are merely out of gas, do not send an emergency message. Drop your anchor and call a friend or marina to bring the fuel you need or to give you a tow.

 

 

 

 

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Cobra Electronics MR HH475 owner manual Radiotelephone Calls, Emergency Messages Distress Procedure
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MR HH475 specifications

The Cobra Electronics MR HH475 is a robust and versatile marine handheld VHF radio designed for boating enthusiasts who prioritize safety and reliability on the water. This device is ideal for both recreational and professional mariners, featuring a wide range of functionalities that ensure seamless communication in challenging maritime environments.

One of the standout features of the MR HH475 is its impressive 6-watt transmission power. This allows for clear communication over long distances, making it essential for safety during unforeseen emergencies. Coupled with its robust range of channels, including all United States, Canadian, and international VHF marine channels, users can easily stay connected with other vessels and coastal services, ensuring reliable communication at all times.

The MR HH475 also showcases the latest technology with its Integrated GPS functionality. This feature provides accurate location tracking, which is invaluable during emergencies when a vessel’s position needs to be communicated quickly. The built-in GPS can transmit the vessel's coordinates over the radio, enhancing overall safety and response times in crisis situations.

Another notable characteristic is its Dual Watch feature. This function allows users to monitor two channels simultaneously, ensuring that they don't miss important communications while they are engaged in other conversations. The dual watch capability is especially useful in busy maritime areas where multiple channels are in use.

In terms of durability, the MR HH475 boasts a waterproof design, meeting the JIS7 standard. This means it can be submerged in water for a limited time without suffering damage, reassuring users that it can withstand the rigors of marine environments. The radio is also compact and lightweight, making it easy to carry or mount on a boat without taking up valuable space.

Additional features include a built-in flashlight for enhanced visibility during nighttime operations and easy-to-use controls with a backlit display for usability in low-light situations. The Cobra MR HH475 also supports NOAA weather channels, providing crucial updates on weather conditions, helping users make informed decisions while out on the water.

Overall, the Cobra Electronics MR HH475 is an excellent choice for those looking for a reliable marine VHF radio with advanced features like GPS and dual watch capabilities, marrying performance with the durability needed for life on the water. Whether for sailing, fishing, or emergency preparedness, this device stands out as a trusted companion on marine adventures.
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