What is a portable VHF radio used for in navigation?
A portable VHF radio is a radio transceiver designed for maritime communications. It allows you to establish contact with other vessels, ports, CROSS (regional operational centers for surveillance and rescue) and receive specific weather reports.
Its main advantage is its portability. Unlike a fixed VHF, it runs on batteries, can be used anywhere on board, including from a dinghy, and does not depend on the vessel's electrical system. It is therefore a valuable backup solution in the event of damage, evacuation, or solo sailing.
It also plays a supporting role in internal communications on board, coordination at anchor, or sports use (SUP, jet ski, etc.).
The portable VHF is designed to remain tuned to channel 16, the international distress and safety channel, making it an essential permanent monitoring tool as soon as you move away from the shore.
The different types of portable VHF radios
The portable VHF radios available on the market differ mainly in terms of their built-in technology, ergonomics, and resistance to marine conditions. Several features deserve special attention.
With or without DSC
DSC (Digital Selective Calling) technology allows you to send a pre-programmed digital distress message. When coupled with an integrated GPS, it automatically transmits the vessel's position to the authorities and other vessels in the vicinity.
This device significantly speeds up the rescue process, provided you have an MMSI (Maritime Mobile Service Identity) number. A VHF without DSC remains fully functional for everyday use, particularly for coastal navigation.
Built-in GPS
An integrated GPS allows the VHF to accurately geolocate your position. This system can be used alone to view your location or in combination with DSC to automate distress calls.
Buoyancy and waterproofing
Most current models are waterproof, but protection levels vary according to the IP standard. The most common are:
- IPX5: resistant to water jets
- IPX7: resistant to temporary immersion (up to 1 m, 30 minutes)
- IPX8: submersible beyond 1 m according to manufacturer's specifications
Some models are buoyant, making them easier to retrieve if they fall into the water.
They can also incorporate an automatic light signal system (flashing on the surface).
Battery life and battery
The battery life of a portable VHF radio depends mainly on the battery capacity, transmission power, and activated functions. Battery life ranges from 7 to 20 hours under normal use. Lithium-ion or lithium-polymer batteries are the most common today.
How to choose a portable VHF radio suited to your boating needs
The choice of a portable VHF should be based on your navigation program, your battery life requirements, frequency of use, and desired level of safety.
Here are the main criteria to consider:
| Criterion | What to check |
| Power | Up to 6W in portable mode, with adjustable settings (1W/6W). Direct impact on signal range. |
| Battery life | From 7 to 20 hours depending on battery capacity and active functions. |
| Water resistance | IPX7 minimum recommended for exposed marine use. |
| Buoyancy | Highly recommended for open boats or dinghies. |
| Ergonomics | Easy-to-read display, backlit keys, direct access button for channel 16. |
| Advanced features | GPS, ASN, triple watch, DOT matrix display, favorite channel. |
| Included accessories | AC or USB charger, wrist strap, base station, belt clip, waterproof case. |
A simple model will suffice for occasional use close to the coast. Conversely, a portable VHF equipped with DSC and GPS is recommended for regular use or semi-offshore navigation.
What do the regulations say?
French regulations distinguish between two main cases depending on the power and functionality of the VHF radio used.
VHF without DSC (≤6W)
A portable VHF radio with a maximum power of 6 watts, without DSC, can be used without a license or certificate. It is therefore accessible to everyone, including paddleboarders, kayakers, and dinghy sailors.
VHF with DSC
The use of a portable VHF with DSC requires:
- Either a recreational boating license (coastal or inland waters option)
- Or a CRR (Restricted Radiotelephony Certificate), issued by the ANFR
This regulation also applies to international navigation or navigation outside French territorial waters.
To activate DSC, you must obtain a unique MMSI number associated with your boat. This can be done free of charge at the ANFR.
Navigation areas concerned
VHF is mandatory more than 300 m from the shore for non-motorized boats (SUP, kayak, etc.), and essential for offshore navigation (more than 60 miles from shelter), where a portable VHF must complement a fixed model.
Examples of reliable portable VHF radios
Here are three models that are particularly suited to the needs of sailors of all levels:
- HX210: IPX7 waterproof 6W VHF, floating, battery life up to 12 hours, backlit screen. A versatile model for active navigation.
- Navicom RT411: Compact, simple, durable VHF radio with direct access to channel 16. Ideal for day trips.
- Navicom RT411 Pack: Same model as above with accessories included (mains charger, wrist strap, belt clip).
Summary
| Type of navigation | Recommended model | Main advantages |
| Daytime coastal navigation | Navicom RT411 | Simplicity, compact size, robustness |
| Family navigation with children | Navicom RT411 | Accessory pack included, good value for money |
| Semi-offshore or regular navigation | HX210 | Buoyancy, 6W power, enhanced battery life |
Choosing a portable VHF radio is not just a simple purchase of electronics: it is an investment in safety, for you and for other users at sea. A model suited to your needs will guarantee efficiency, peace of mind, and responsiveness in the event of the unexpected.
FAQ – Frequently asked questions about portable VHF radios
Is a portable VHF radio mandatory?
Yes, if your boat is more than 300 m from shelter, even without an engine. For offshore sailing, it is essential in addition to a fixed VHF radio.
Can I use a portable VHF radio on land?
No, regulations limit the use of VHF to maritime contexts. Its use on land is only authorized in the event of an emergency involving a CROSS (Coastal Rescue Coordination Center).
Do I need to register my portable VHF radio?
Only if it has an ASN. In this case, it must be associated with an MMSI number and registered with the ANFR.
What is the actual range of a portable VHF radio?
The range varies depending on the power, antenna height, and weather conditions. It is generally between 3 and 8 nautical miles.
Does a floating VHF have less autonomy?
Yes. To enable buoyancy, the battery is often lighter, which limits the battery life to around 8–10 hours depending on the model.