Understanding Your VHF

A VHF radio is a valuable piece of safety equipment for boaties. This two-way communication device allows you to call for help in emergencies, communicate with other vessels and receive safety information. The Coastguard is one of the best resources for understanding how VHF works, its limitations, and its requirements for use.

Your VHF system is primarily a safety system - and not for general communication. You're required to have a VHF licence to use it for general communications unless it's an emergency. You can get certified by completing a Coastguard Boating Education course. This course will explain channels and use of the VHF. It's important to understand there isn't a lot of chatter going on, unless you're listening to the weather report or Coastguard channels.

What is my MMSI?

Boats using a VHF radio also require a Callsign and MMSI. The MMSI is a unique code for your boat, and it needs to be set up before use.  Some of our VHF radio units allow you to load the code into your radio and broadcast it when sending an SOS or other signals.

Basic Troubleshooting

Many of the issues people have with their handheld radios are due to operator error - generally a misunderstanding of how the VHF channels work. Here are some things to check to ensure your radio isn't faulty:

1.  Read the manual. Seriously, many people don't. VHF radios aren't toys. They're communication devices that require some understanding and study before use.

2. Ensure you're using the International Setting. If your radio has switchable channels, your radio might be using the US Setting.

3. Check if you're communicating on a simplex channel. If not, you might be able to hear messages, not transmit, or transmit but not hear.