Rugged Handheld Marine Radio with GPS & Bluetooth

The Uniden MHS338BT handheld marine radio stands out from other handheld marine radios because it combines advanced communication technology, GPS precision, and rugged reliability in one compact unit. Boaters who value safety and reliable performance offshore will appreciate this model when navigating, fishing, or cruising extended routes.

One of its biggest advantages is its integrated GPS and DSC (Digital Selective Calling). Many standard handheld marine radios require external GPS input, but the MHS338BT includes GPS built directly into the unit. This feature allows you to instantly transmit your coordinates in an emergency with one-touch DSC distress calling. As a result, rescue teams or nearby vessels can locate you faster — a vital safety feature that separates it from most budget models.

Integrated GPS + Bluetooth: A Smarter Safety Combo

Another key differentiator is Bluetooth connectivity. With Bluetooth, you can pair your mobile phone in order to take and make calls directly through the radio. This hands-free integration reduces distractions, especially when you’re navigating or handling gear. Most competing handhelds lack this level of convenience.

Durability is another reason it stands apart. The MHS338BT is JIS8/IPX8 submersible and floats if dropped in water, so it’s ready for harsh saltwater environments. Uniden’s build quality ensures long-term reliability even after exposure to spray, rain, or accidental drops — conditions that often damage cheaper radios.

The radio’s 6-watt transmission power provides extended communication range, while selectable 1- and 2.5-watt options help conserve battery life when full power isn’t necessary. Its large, daylight-readable LCD display and intuitive keypad design make it easy to operate, even in bright sun or while wearing gloves.

Because it’s GPS-enabled, you can also use the unit for basic navigation assistance or position sharing between vessels. For example, anglers and cruisers often use the coordinate readout to confirm drift, mark spots, or relay positions to other boats.

According to the FCC Maritime Mobile Services division, properly configured handheld VHF radios are one of the most effective safety tools aboard any vessel — and the MHS338BT is designed precisely for that role.

A handheld marine radio with GPS offers several major advantages that enhance safety, convenience, and navigation for boaters, anglers, and coastal professionals. It combines two of the most important marine tools — communication and positioning — into one compact device in order to make your time on the water safer and more efficient.

• Instant Emergency Positioning: When distress calls are made through DSC (Digital Selective Calling), the GPS feature automatically sends your vessel’s exact coordinates to nearby boats and rescue services. This can dramatically reduce response time in emergencies, giving rescuers precise information about your location.
• Accurate Navigation Awareness: Built-in GPS allows you to:
  • See your real-time position on the display
  • Track movement or drift while fishing or anchoring
  • Share coordinates with other vessels for rendezvous points
  • Use waypoints or lat/long data to stay oriented during poor visibility
  • These functions reduce the need for a separate handheld GPS, keeping navigation simple and integrated.

Why GPS Makes Marine Radios Safer

• Greater Independence from Other Electronics: With a GPS-equipped radio, you can communicate and navigate even if your main chartplotter or electrical system fails. This redundancy gives peace of mind during long trips or power outages.
• Enhanced Communication Clarity: Marine VHF with GPS ensures that your location data is accurate when transmitting to Coast Guard or other mariners. Paired with features like Uniden’s Bluetooth calling and noise-canceling microphones, you maintain clear, dependable contact no matter the conditions.
• Portability and Flexibility: Unlike fixed-mount radios, handheld models give you freedom to move around your vessel or take them ashore. Many, like the Uniden MHS338BT, float and feature long battery life, waterproof protection, and multiple power settings in order to extend range or preserve energy.
• Compliance and Safety Confidence: A handheld marine radio with GPS meets or exceeds modern safety expectations set by the FCC’s Maritime Services and U.S. Coast Guard guidance. Having one aboard ensures compliance while providing a vital backup if primary systems fail.
• Cost-Effective Multi-Tool: You save space and money by combining navigation and communication functions in one reliable handheld unit. For smaller boats, kayaks, or tenders, this all-in-one setup makes more sense than carrying two separate devices.

Choose a handheld marine radio with GPS in order to stay safer, more connected, and better prepared on every voyage.

Yes — the Uniden MHS338BT handheld marine radio includes built-in GPS navigation that provides your exact position directly on the radio’s display. This integrated GPS makes it much more than a basic communication device — it becomes a compact navigation and safety tool you can rely on even if your main electronics go offline.

Built-In GPS for Safer Marine Navigation

Here’s what that means in practical terms:

• Real-Time Position Tracking: The MHS338BT continuously receives GPS data so you always know your latitude and longitude. This helps you confirm your location at a glance, whether you’re cruising offshore or drifting near shorelines.
• Automatic Position Transmission: Because the GPS and DSC (Digital Selective Calling) systems work together, the radio can instantly broadcast your precise coordinates in an emergency. Pressing the one-touch DSC distress button instantly transmits your position to nearby vessels and rescue teams.
• Waypoint & Coordinate Use: You can view and share your current position to mark fishing spots, rendezvous points, or safe return locations. Even though it’s not a full chartplotter, this function offers essential navigation awareness when visibility drops or electronics fail.
• Independent Navigation Backup: Since the GPS is built directly into the unit, it doesn’t rely on any connection to your boat’s chartplotter or network. If your onboard systems lose power, the MHS338BT continues to display your coordinates and transmit your position.
• Peace of Mind in Emergencies: Combined with its floating, waterproof (JIS8/IPX8) design, the integrated GPS ensures that even if you’re separated from your vessel, you can transmit accurate location data to rescuers.

The GPS accuracy and response time of the MHS338BT make it ideal for coastal cruising, fishing trips, or offshore excursions where safety and location awareness are critical. According to the FCC’s Maritime Mobile guidelines, modern handheld VHF units with GPS enhance emergency readiness and meet the latest maritime safety standards.

Rely on the Uniden MHS338BT’s built-in GPS in order to navigate confidently and stay visible when it matters most.

Bluetooth connectivity is one of the standout features that makes the Uniden MHS338BT handheld marine radio more versatile and user-friendly than most traditional handheld radios. By integrating Bluetooth technology, Uniden gives boaters a safer and more convenient way to stay connected — without juggling multiple devices while underway.

Here’s how Bluetooth enhances your experience:

• Hands-Free Calling: You can pair your smartphone with the radio in order to make and receive phone calls directly through the MHS338BT. This allows you to keep your hands on the wheel or your gear, improving safety while you navigate, fish, or dock.
• Reduced Clutter and Distraction: Instead of fumbling with your phone in wet or unstable conditions, Bluetooth keeps communication centralized. Calls and messages route through your radio, reducing the need to handle fragile electronics in rough water.
• Seamless Audio Integration: The built-in Bluetooth microphone and speaker system ensure clear audio quality, even in windy or noisy environments. This makes it easier to hear both phone and radio communications, so you never miss important information.

Stay Connected Without Touching Your Phone

• Dual-Channel Awareness: With Bluetooth connected, you can listen to VHF channels while remaining available for incoming cellular calls. This dual-awareness feature means you’re never completely offline — ideal for coordinating with your crew or communicating with marinas and contacts onshore.
• Enhanced Safety Communication: In emergencies, Bluetooth can serve as an additional communication bridge if your cell network is available. You can call for help while still monitoring VHF distress channels, which adds a valuable layer of redundancy.
• Simplified System Management:The Bluetooth pairing process is quick and reliable, so you can easily switch between devices or disconnect when others use the radio on the same vessel.

Compared with standard handheld marine radios, the MHS338BT’s Bluetooth capability gives you smartphone-level convenience in a rugged, waterproof tool. 

Bluetooth also complements the radio’s built-in GPS and DSC safety systems. For example, if your primary navigation or phone fails, you still retain direct radio contact and position-transmitting ability. This blend of wireless convenience and maritime safety is what makes the MHS338BT unique among handheld marine radios.

Pair your phone in order to enjoy clear, hands-free communication and safer control with the Uniden MHS338BT handheld marine radio.

Yes — the Uniden MHS338BT handheld marine radio is fully waterproof and designed to float, making it exceptionally reliable for marine environments. It carries a JIS8/IPX8 rating, which is among the highest waterproof standards for portable electronics. With this rating, the radio continues working even after 30 minutes underwater at depths of up to 1.5 meters (about 5 feet).

Here’s what makes its waterproof and floating design stand out:

• IPX8 Waterproof Certification:The MHS338BT meets the IPX8 standard for continuous immersion. That means it isn’t just splash-proof — it’s built to survive complete submersion. Whether you’re caught in heavy rain or drop it overboard, it will continue operating normally once recovered.
• Floats on Water: Thanks to its carefully balanced internal construction, the radio floats when dropped into water. This helps you retrieve it quickly and prevents costly loss at sea. Uniden even added a bright orange panel around the display, so it’s easier to spot if it falls into the water.

Built to Survive: Fully Waterproof and Floating Design

• Saltwater-Resistant Materials: The exterior casing and seals are engineered to resist corrosion and damage caused by saltwater exposure. This ensures the unit remains durable and reliable for years, even with regular offshore use.
• Submersible Speaker Design: The speaker grille is specially treated to repel water and clear itself automatically once removed from the sea or lake. You get clear, strong audio after it dries — an essential feature when every word matters during communication.
• Proven Durability for Real Conditions: From feedback on boating forums like The Hull Truth and BoatUS, users confirm that the MHS338BT continues to function after real-world drops, splashes, and immersion. Its floating design also gives peace of mind during rough weather or when working around the deck.

When compared with competing models from Cobra or Icom, the Uniden MHS338BT delivers the same top-tier waterproof protection while adding Bluetooth, GPS, and advanced DSC safety features — all in one handheld unit. This combination makes it a trusted choice for coastal cruisers, anglers, and emergency responders who need a communication tool that can handle tough marine conditions.

Trust the Uniden MHS338BT in order to stay connected — even if it goes overboard — with floating, waterproof protection built for real marine life.

Yes — the Uniden MHS338BT handheld marine radio includes NOAA Weather Alerts and dedicated emergency channels, giving you critical information and immediate access to help during severe conditions. These features make it an essential communication and safety tool for any boater who wants to stay informed and protected on the water.

Here’s how these functions work together:

• Built-In NOAA Weather Channels: The MHS338BT can tune into all 10 NOAA weather channels, allowing you to monitor real-time forecasts, storm updates, and marine warnings directly from your radio. This is especially valuable for offshore boaters who may lose cellular service but still need access to weather alerts.
• Automatic NOAA Weather Alerts: You can enable the Weather Alert Watch mode in order to have the radio automatically scan for NOAA alerts. When the National Weather Service issues a watch or warning (such as small craft advisories or severe storms), the radio will sound an audible alarm and display the alert. This lets you react quickly and make safety decisions even if you’re not actively monitoring the weather channel.
• Access to Emergency and Distress Channels: The MHS338BT includes all standard U.S., Canadian, and International marine VHF channels, including Channel 16 (156.8 MHz) — the universal distress, safety, and calling frequency monitored by the U.S. Coast Guard. You can switch to this channel instantly using the “16/9” quick-select button in order to call for assistance or respond to other vessels in need.

Stay Ahead of Storms with Built-In NOAA Alerts

• Digital Selective Calling (DSC) Integration: When combined with its built-in GPS, the DSC feature allows you to send a one-touch distress call that automatically transmits your vessel’s identity and coordinates to the Coast Guard or nearby DSC-equipped vessels. This is a crucial enhancement beyond traditional voice calling because it saves time and reduces errors during emergencies.
• Continuous Weather Monitoring: Even while you’re tuned to other marine channels, the MHS338BT can maintain standby scanning of weather frequencies in order to notify you if a new alert is issued. This background safety net ensures you never miss critical updates.

The Uniden MHS338BT also includes the NOAA and the National Weather Service's emergency channel operations under “Weather Alert Watch Mode”.

Stay alert and prepared — trust the Uniden MHS338BT in order to keep you informed with NOAA weather warnings and instant access to emergency channels.

The Uniden MHS338BT handheld marine radio includes several convenient charging options in order to keep you powered up on and off the water. Uniden designed this model with flexibility in mind so you can recharge it from your boat, vehicle, or home — ensuring your radio is always ready for use in an emergency.

Here’s what’s included and how each option works:

• Drop-In Desktop Charging Cradle: Every MHS338BT comes with a drop-in charging cradle that securely holds the radio for easy charging. Simply place the radio into the cradle — no need to remove the battery. This cradle connects to power through either an AC or DC adapter, so you can recharge from shore power or your boat’s electrical system. 
• 120V AC Power Adapter: The included AC adapter allows you to plug the charging cradle into any standard household outlet. This option is perfect for recharging at home, in a marina office, or anywhere with access to regular electrical service.
• 12V DC Vehicle/Battery Adapter: The box also includes a 12V DC adapter designed for boat or vehicle use. It connects directly to your vessel’s 12-volt outlet (or car socket), making it easy to recharge the radio while underway. This option is especially useful for long trips when AC power isn’t available.

Flexible Power: AC, DC, and Onboard Charging Options

• Rechargeable Lithium-Ion Battery Pack: The MHS338BT uses a high-capacity lithium-ion battery engineered for long runtime and low self-discharge. It provides hours of continuous operation, even when using GPS and Bluetooth simultaneously. Because it’s removable, you can keep a spare battery charged for backup in order to ensure uninterrupted communication.
• Battery-Level Display & Power-Saving Modes: The radio’s LCD screen shows remaining battery life, and the power-saving function automatically reduces power when idle to extend operation time. These features make it easier to manage energy during long days on the water.

Compared to many handheld marine radios, the Uniden MHS338BT gives you multiple ways to recharge and stay ready. Eliminating the worry of running out of power while boating. Whether you’re docked, trailering, or offshore, you have dependable charging flexibility that matches your environment.

For detailed charging instructions, refer to the Uniden MHS338BT Owner’s Manual. The manual will provide diagrams of the AC and DC connections, estimated charge times, and safety precautions.

Power your adventures confidently — the Uniden MHS338BT keeps you charged whether you’re on shore, underway, or at anchor.

Yes — you can pair the Uniden MHS338BT handheld marine radio with your smartphone via Bluetooth in order to make and receive calls directly through the radio. This feature turns your MHS338BT into a hands-free communication hub that’s safer and more practical when you’re navigating, fishing, or managing your vessel.

Here’s how Bluetooth pairing enhances smartphone use on the water:

• Simple Bluetooth Pairing Process: Pairing your smartphone is straightforward. Once Bluetooth is activated on both devices, the MHS338BT will appear on your phone’s device list. Select it, confirm the connection, and the radio will remember the pairing for future use. You only need to set it up once.
• Hands-Free Calling: When paired, you can answer or place phone calls through the radio without ever touching your phone. This helps you stay focused on safe operation — ideal when your hands are busy handling lines, steering, or navigating.
• Clear Audio Quality: The MHS338BT’s built-in speaker and microphone deliver crisp, clear sound, even in windy or noisy conditions. You can hear callers over engine noise or weather, and your voice remains intelligible on the other end.
• Convenient Controls: The radio’s buttons let you manage key phone functions, including answering, ending, or rejecting calls. This keeps your smartphone protected from water and within dry storage.

Stay Hands-Free with Bluetooth Calling

• Dual Functionality: You can monitor VHF channels while simultaneously staying available for cellular calls. This feature means you won’t miss important communications from your crew, marina, or family while maintaining marine radio monitoring.
• Added Safety Layer: In areas where cell coverage is still available, Bluetooth pairing allows for quick access to phone-based emergency calls or navigation apps. Meanwhile, the radio’s VHF and DSC features ensure you can communicate even when the cellular signal drops.
• Improved Organization and Mobility: Because the MHS338BT replaces the need to handle your phone on deck, it helps prevent dropped or damaged phones — a common issue in marine environments.

The combination of Bluetooth, GPS, and DSC makes the MHS338BT one of the most complete handheld radios on the market. According to the Uniden MHS338BT Owner’s Manual, Bluetooth pairing works with most modern smartphones that support standard Bluetooth call profiles.

Pair your smartphone with the Uniden MHS338BT in order to enjoy clear, hands-free Bluetooth calling wherever your adventures take you.

Extending the battery life of your handheld marine radio, such as the Uniden MHS338BT, ensures you stay connected longer. This is especially true during extended trips or emergency situations. While the radio already includes a high-capacity lithium-ion battery, a few smart habits can significantly increase runtime and preserve long-term battery health.

Here are the most effective ways to extend battery life:

• Use the Correct Power Level: The MHS338BT allows you to select between 1 W, 2.5 W, and 6 W transmit power. Use the lowest power setting that still maintains clear communication. High-power (6 W) transmissions consume far more energy and should be reserved for long-range calls.
• Activate Power-Save Mode: Enable the Power Save (Battery Saver) feature found in the radio’s menu. When no signal is detected, the receiver periodically sleeps in order to reduce energy consumption without affecting your ability to receive important calls.
• Dim the Backlight: Uniden excludes warranty coverage for damage caused by misuse, unauthorized repairs, or accidents like crushing, fire, or immersion deeper than the IPX8 rating.
• Disable Bluetooth When Idle: Bluetooth adds convenience, but it also draws additional power. Turn it off when you don’t need to connect your smartphone in order to maximize battery life for VHF and GPS functions.

Use Smart Handheld Marine Radio Power Settings in order to Save Power on the Water

• Limit GPS Tracking Frequency: The built-in GPS updates continuously, which can drain power over time. Adjusting update intervals (when possible) or turning GPS off during stationary periods will extend runtime.
• Scan and Dual Watch Wisely: Continuous channel scanning or dual-watch modes use more power because the receiver is active across multiple frequencies. Use these modes only when necessary, or reduce the number of channels being scanned.
• Keep Batteries Cool and Dry: Extreme heat or direct sunlight shortens lithium-ion battery lifespan. Store your radio in a cool, shaded place and avoid leaving it plugged in after a full charge.
• Carry a Spare Battery: For long trips, consider purchasing an extra Uniden lithium-ion battery pack. Rotate between them periodically in order to ensure both remain healthy and hold full capacity.

Following these steps helps maintain strong battery performance and reliability, ensuring your radio is ready whenever you need it. You can find additional power-management details in the Uniden MHS338BT Owner’s Manual.

For general battery-care practices, see the U.S. Department of Energy’s battery safety tips.

Use smart power settings in order to keep your Uniden MHS338BT charged, reliable, and ready for every voyage.

Yes — the Uniden MHS338BT handheld marine radio supports the use of headsets and external microphones, giving you greater flexibility and clearer communication in noisy or demanding marine environments. Whether you’re at the helm, handling lines, or wearing protective gear, an external audio accessory can make communication safer and more comfortable.

Here’s how headset and mic compatibility works with the MHS338BT:

• Wired Accessory Port: The radio includes a standard 2.5 mm/3.5 mm dual audio jack, allowing you to connect a wired speaker-microphone or headset. This is particularly useful if you want to clip the radio to your belt or mount it nearby while using a handheld mic for convenience.
• Bluetooth Wireless Headset Support: Because the MHS338BT features built-in Bluetooth, it can pair with many Bluetooth headsets or earpieces designed for hands-free communication. This allows you to talk and listen without holding the radio — ideal when steering, fishing, or performing maintenance on deck.
• Noise Reduction for Clear Audio: Both wired and wireless options benefit from the radio’s noise-cancellation technology, which reduces wind and engine noise. This ensures your voice remains clear even in rough weather or high-traffic channels.
• PTT (Push-to-Talk) Functionality: External speaker-mics usually include a PTT button, letting you transmit instantly without reaching for the radio itself. This is especially useful if you wear gloves or need fast access during docking or emergencies.
• Secure Fit and Marine Durability: Uniden’s optional accessories are built with marine-grade materials to resist corrosion and splashing. They lock firmly into the radio’s side connector to prevent accidental disconnection.

Safety and Mobility Benefits

Using a headset helps maintain awareness and balance by freeing your hands. It also keeps communications private, preventing loud transmissions from startling passengers or crew.

If you plan to use a third-party Bluetooth headset, check the compatibility notes in the Uniden MHS338BT Owner’s Manual. The manual lists pairing steps and tips for best performance. For professional-grade setups, Uniden also offers branded waterproof speaker-microphones and earpiece options through its accessories line.

Compared to radios without Bluetooth, the MHS338BT gives you a modern, flexible communication system that adapts to how you operate your vessel — wired or wireless, hands-on or hands-free.

The Uniden MHS338BT handheld marine radio is backed by a three-year limited warranty, demonstrating Uniden’s confidence in its durability and performance under real marine conditions. This coverage provides peace of mind by protecting your investment against defects in materials and workmanship during normal use.

Here’s a breakdown of what that warranty includes and how it works:

• Length of Coverage: The MHS338BT is covered by a three-year limited warranty from the original date of retail purchase. This warranty applies only to the original owner and cannot be transferred to another party.
• What’s Covered: Uniden will repair or replace, at its discretion, any part found to be defective due to faulty materials or workmanship during the warranty period. This includes internal components, the radio housing, and any factory-installed features such as Bluetooth and GPS systems.
• What’s Not Covered: The warranty excludes damage that results from misuse, unauthorized repairs, or accidents such as crushing, fire, or prolonged submersion beyond the IPX8 standard. It also excludes cosmetic wear, battery degradation from age, or accessories like charging cradles and cables.

How to Access Warranty Service or Support

• How to Obtain Service: If you experience a warranty issue, you can contact Uniden Customer Service for troubleshooting or return instructions. Proof of purchase is required for service authorization. Uniden may repair or replace the unit depending on availability and evaluation results.
• Where to Send Repairs: Uniden’s authorized service centers handle marine product warranties. Contacting support first ensures your product is routed correctly for the fastest turnaround.
• Additional Protection Through Authorized Dealers: Purchasing your MHS338BT from an authorized retailer or directly from Uniden's website ensures that the warranty remains valid. Products sold through unauthorized sellers or gray-market listings may not qualify for service.
• Support Resources: The Uniden Warranty Information page outlines the general terms and procedures for product service. You can also find warranty details and return instructions in the MHS338BT Owner’s Manual.

Compared with many competing handheld marine radios, Uniden’s three-year coverage is among the most generous in its class. This reflects our confidence in the product’s reliability, waterproofing, and rugged design.

Yes — water damage is covered under the Uniden MHS338BT warranty as long as the radio is used within its rated waterproof specifications (JIS8/IPX8). If water enters the unit under normal marine conditions that meet Uniden’s published standards, the company will repair or replace it under warranty.

Here’s how that protection works in practice:

• IPX8 / JIS8 Waterproof Rating: The MHS338BT is certified to meet IPX8 (JIS8) standards, meaning it can withstand submersion in up to 1.5 meters (5 feet) of water for 30 minutes without damage. This rating applies to both freshwater and saltwater exposure when the radio’s covers and seals are properly closed.
• Warranty Coverage for Water Damage: If water enters the unit despite following those usage guidelines, it’s considered a manufacturing defect and is covered by the three-year limited warranty. Uniden will inspect the radio to confirm that the seals and housing failed due to workmanship or material defects — not misuse.

Waterproof Protection That’s Backed by Warranty

• When Water Damage Is Not Covered: The warranty does not apply if:
  • The radio’s battery or accessory port covers were left open during use or immersion.
  • The unit was exposed to depths or durations beyond the IPX8 rating.
  • Damage resulted from corrosion due to long-term neglect, improper cleaning, or chemical exposure.
  • Only an authorized Uniden service center should perform repairs or modifications.
• Proper Care After Water Exposure: Even though it’s submersible, the MHS338BT should be rinsed with freshwater after saltwater use and dried thoroughly before charging. This helps preserve gasket seals and ensures continued waterproof integrity.
• Service Process for Water Issues: If you believe your radio experienced valid water intrusion, contact Uniden Customer Service for evaluation. You’ll need to provide a proof of purchase and a brief description of how the issue occurred. If the radio passes inspection as a valid warranty case, Uniden will repair or replace it at no charge.

For official warranty details, see the MHS338BT Owner’s Manual. These documents outline how waterproof claims are handled and list specific care instructions for maintaining IPX8 performance.

Compared with many competing handheld marine radios, Uniden’s warranty and rugged design provide exceptional confidence for real-world marine environments.