When in charge of a small boat or on the water for sport, a handheld VHF radio connects you with other vessels, marinas and in an emergency, service that could well save your life.
Handheld 2-way VHF radios, even those marketed as waterproof, are only as dependable as their protection. Exposure to spray, rain, or accidental immersion can quickly damage internal circuits or corrode contacts. A waterproof VHF case keeps a radio operational in all weather, ensuring you are contactable and can be contacted at all times.
In this guide, we look at all the attributes needed for a good waterproof VHF radio case. And those specific features of a case that could benefit the kind of water-based activities you intend to do.
A quick note before we continue. VHF radios in most territories, such as the UK and the USA, require an operator to be licensed. Please check the legislation in your country well before heading out onto the water.
What is a VHF Radio Case?
Modern handheld VHF radios are often built with some water resistance, but few are designed for prolonged immersion. For example, many marine radios are rated IPX7, meaning they can survive immersion up to 1 metre for 30 minutes in freshwater. In real marine conditions, where salt and movement are constant, that protection is often not enough.
A waterproof case provides a physical barrier between your radio and the environment. It keeps out not only water but also dust, sand, and fuel residue. It ensures that your radio continues to transmit and receive clearly, even during heavy weather or after a wave breaks over the deck.
Why Protection Matters at Sea
Saltwater is one of the most damaging environments for electronic equipment. When saltwater dries, it leaves behind conductive crystals that can short-circuit a radio’s internal components. Even occasional splashes can cause corrosion inside buttons and microphone ports.
VHF Radio Case Waterproof Ratings
All good VHF radio cases should be sold with an accompanying waterproof rating. This yardstick tells you how much to expect of the case.
Waterproof ratings follow the Ingress Protection (IP) standard, which measures resistance to water. Here are some common ratings.
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IPX6 protects against high-pressure water jets.
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IPX7 allows immersion in water up to 1 metre for 30 minutes.
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IPX8 covers continuous immersion at greater depths, depending on the manufacturer’s testing.
Aquapac waterproof VHF cases, for instance, are tested to IPX8 standards, meaning they keep radios dry in rough, wet conditions far beyond the limits of most built-in resistance.
When you place your VHF radio in a case rated IPX8, the chance of survival is extended significantly. The case maintains a waterproof seal even when submerged several metres below the surface.
For a more detailed look at IPX ratings, visit our about waterproofing page.
Key Features of Waterproof VHF Radio Case
When you compare waterproof VHF radio cases, here are some design features to look for.
Finding the Right Fit
The fit of the case affects both usability and protection. Too small, and it stresses the seams. Too large, and it may trap excess air or shift during use.
Measure your radio’s height, width, and depth, including the antenna and any knobs. Then compare these measurements with the case’s internal dimensions. To make things easier, we list exact measurements for each model to simplify this process.
As a general rule, a snug fit with a little air inside is ideal. The trapped air adds buoyancy and cushioning if the radio is dropped.
Aquapac Waterproof VHF radio cases are sold in three main sizes. The Mini Waterproof VHF Case, the Small Waterproof VHF Case and the Large Waterproof VHF Case.
Clear audio performance
A good case allows your voice to transmit clearly through the material and lets you hear responses without distortion. A quality TPU film (Thermoplastic Polyurethane, a versatile plastic and rubber-like material we use in the manufacturing of our cases) allows enough sound to pass through while maintaining a complete, waterproof seal.
Closure system
A well-designed case features a closure system that forms an even, continuous seal. Some use a clamp-style lock (most Aquapac VHF cases use this), while others depend on a roll-top or zip-style seal (the Aquapac Stormproof VHF radio case has a roll-top closure system).
Irrespective of the closure system, the objective is always the same: to ensure a secure, watertight barrier that prevents water from entering.
Antenna compatibility
Make sure the case fits your radio’s antenna length and connection point to the radio base. A good quality VHF case should provide a ‘good fit’ but also allow the antenna to stand upright to prevent stress on the connector and maintain signal quality.
Buoyancy and visibility
If you work near or on the water, a floating case can save your radio if dropped. High-visibility materials or reflective details make it easier to spot in rough seas or low light.
Ease of operation
You should be able to press buttons, read the screen, and access controls without removing the radio from the case. Transparent windows on both sides make this easier.
Attachment options
A case with a belt loop, neck cord, or clip keeps your radio secure and accessible. If you are working on deck, this can make a real difference during emergencies.
Some VHF radio case systems, including our Extreme Pro, can be fitted to an additional modular docking system. Using something like this means the VHF radio and case can be mounted on the strap of a backpack, a belt, a rail - pretty much anywhere you can think of, really!
Caring for a Waterproof VHF Radio Case
A waterproof case will protect your radio for years if you maintain it properly.
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Rinse the case after every trip to remove salt, sand, and grime
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Dry it completely before storing it in a cool, shaded place.
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Inspect the seal and clip regularly for stiffness, grit, or cracks.
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Test the case empty once a season to ensure the seal still holds.
VHF Radio Cases - Frequently asked questions
Can I transmit and receive clearly through the case?
Yes. The film allows radio waves and sound to pass through effectively. The clarity may vary slightly depending on radio power and antenna position, but most users report no noticeable loss.
Can I use the case underwater?
The case is designed for accidental immersion and wet environments, not for intentional underwater communication. It will, however, protect your radio if it falls into water and allow you to recover it safely.
Does the case float with the radio inside?
Most Aquapac VHF cases float with a standard handheld radio inside. If your radio is unusually heavy, test buoyancy in shallow water before use.
How long will a waterproof case last?
With proper care, a case can last several years. Factors such as UV exposure, frequent flexing, and salt buildup can shorten the lifespan, so inspect it regularly.
A VHF radio is your voice at sea or out on any large body of water. Keeping it dry ensures it will work when everything else fails. By choosing a waterproof case with the right IP rating, sound clarity, and fit, you protect your most important communication tool.
Whether you are a sailor, kayaker, or rescue professional, a reliable case adds a vital layer of security between your equipment and the water. Test it before each voyage, maintain it after every trip, and it will look after your radio for years to come.