Garmin ECHOMAP UHD2 73cv U.S. Inland GN+ Review

Garmin ECHOMAP UHD2 73cv U.S. Inland GN+ with GT20-TM Transducer for Boats & Marine Engines

Introduction

The Garmin ECHOMAP UHD2 73cv U.S. Inland GN+ with GT20-TM Transducer is a powerful and reliable GPS fishfinder/chartplotter combination, designed for serious anglers and inland water navigators. With a bright, sunlight-readable 7” display, preloaded U.S. Inland Garmin Navionics+ charts, and ultra-high-definition ClearVü sonar, this device delivers all the tools necessary for successful trips on lakes, rivers, and other inland water bodies. Boasting a rugged build and seamless integration with other marine systems, the ECHOMAP UHD2 73cv offers unparalleled clarity, detail, and confidence on the water.

Overview / What Is Garmin ECHOMAP UHD2 73cv

The Garmin ECHOMAP UHD2 73cv is part of Garmin’s advanced UHD2 series that delivers superior sonar clarity and navigational functionality in a compact yet feature-rich design. This 7-inch touchscreen + keypad combo offers high-contrast imagery with precise sonar returns, thanks to the bundled GT20-TM transducer which supports both CHIRP traditional and ClearVü scanning sonar.

Preloaded with Garmin Navionics+ U.S. Inland charts, it provides exceptional detail on thousands of lakes and rivers across the United States. Its built-in Wi-Fi® connectivity allows for wireless updates, ActiveCaptain™ app sync, and more, making it a tech-forward choice for boaters and anglers alike.

Key Features of Garmin ECHOMAP UHD2 73cv

• Display: 7” touchscreen with keypad assist, sunlight-readable
• Sonar: GT20-TM Transducer with CHIRP and ClearVü sonar
• Charts: Preloaded Garmin Navionics+ U.S. Inland GN+ maps
• Networking: NMEA 2000 and NMEA 0183 compatible
• Wi-Fi: Built-in for quick updates and ActiveCaptain sync
• Quickdraw Contours: Create custom 1’ HD fishing maps

How to Install Garmin ECHOMAP UHD2 73cv Correctly

Installing the Garmin ECHOMAP UHD2 73cv U.S. Inland GN+ with GT20-TM Transducer is simple when you follow Garmin’s mounting and cabling procedures. Start by selecting a visible and glare-free location at the helm or console. Mount the display using the included bail mount or opt for flush mounting for a cleaner look. Run the power, transducer, and optional NMEA 2000 cables securely behind the dash.

The GT20-TM transducer should be mounted on the transom at a location free of cavitation, turbulence, and near the boat’s centerline. Once installed, power on the unit, follow the setup wizard, and calibrate sonar and map settings for your region. Ensure all cables are waterproofed using marine-grade grommets and sealants.

Advantages of Garmin Navionics+ U.S. Inland GN+ Mapping

One of the major selling points of the ECHOMAP UHD2 73cv is its inclusion of Garmin Navionics+ Inland GN+ charts. These maps cover over 18,000 U.S. lakes and rivers, providing detailed contours, depth ranges, Auto Guidance+ routing, and community edits from fellow users. This inland-centric focus ensures every boater or angler can rely on accurate, up-to-date map data.

Additionally, users can download daily chart updates, take advantage of depth shading, and explore uncharted waters with ease using the Quickdraw Contours feature. With this functionality, you can create your own custom maps on-the-fly, enabling better planning and fish targeting in areas without detailed charts.

How to Troubleshoot Garmin ECHOMAP UHD2 73cv Issues

Common issues with the Garmin ECHOMAP UHD2 73cv U.S. Inland GN+ with GT20-TM Transducer can include sonar loss, GPS lag, or power issues. Fortunately, most of these are easily resolved with simple diagnostics:

• Sonar Not Displaying: Ensure the GT20-TM transducer is clean, connected properly, and not obstructed by aerated water.
• GPS Delay: Check for software updates, or relocate the unit to a better satellite line-of-sight area.
• No Power: Inspect fuse connections, power cable integrity, and ensure sufficient battery voltage.

Using the ActiveCaptain app, you can access troubleshooting guides, firmware updates, and Garmin customer support all in one place.

Maintenance Tips

Maintaining your Garmin ECHOMAP UHD2 73cv ensures long-lasting reliability and consistent performance. Here are some essential care practices:

• Regular Cleaning: Wipe the screen with a damp microfiber cloth. Avoid using alcohol or ammonia-based cleaners.
• Update Frequently: Use Wi-Fi or Garmin Express to install the latest firmware and chart updates.
• Secure Cabling: Periodically check all cable connections for corrosion, wear, or loosening due to vibration.
• Transducer Care: Inspect the GT20-TM for marine growth or impact damage. Clean with fresh water after each trip.
• Offseason Storage: Detach and store the unit in a dry location. Use the screen cover to prevent UV damage.

Why Choose Garmin ECHOMAP UHD2 73cv Over Competitors?

Compared to similar models in the 7-inch class, the Garmin ECHOMAP UHD2 73cv stands out with its combination of sonar accuracy, inland charting capabilities, and ease of use. While other brands may offer similar features, few deliver Garmin’s level of mapping detail, software support, and community integration through ActiveCaptain.

Its built-in Wi-Fi, responsive interface, and transducer performance provide an edge in fish targeting and navigation, making it a favorite for both recreational anglers and pros. Combine this with the Garmin name and futureproofing via NMEA 2000 compatibility, and it’s clear why it’s a top-tier choice.

Expert Advice and Pro Recommendations

Anglers who frequently explore U.S. lakes and rivers will find the Garmin ECHOMAP UHD2 73cv U.S. Inland GN+ with GT20-TM Transducer invaluable. Its precise sonar capabilities allow you to locate fish, identify underwater structures, and safely navigate shallow or weedy areas.

We recommend connecting your unit to a NMEA 2000 network for engine monitoring, fuel tracking, and autopilot support. For optimal sonar clarity, install the transducer away from propeller turbulence and keep it clean. Use Quickdraw Contours to build a private fishing database over time.

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Detailed FAQ Section

What comes included with the Garmin ECHOMAP UHD2 73cv?

The package includes the ECHOMAP UHD2 73cv chartplotter, GT20-TM transducer, power/data cable, tilt/swivel bail mount, flush mount kit, hardware, and documentation. Everything needed for basic installation is included. Users looking to integrate with NMEA 2000 or external sensors may need to purchase additional cables or accessories. The included Garmin Navionics+ U.S. Inland GN+ charts provide immediate access to detailed freshwater navigation, so you’re ready to go right out of the box.

How do I update the software on my Garmin ECHOMAP UHD2 73cv?

You can update the unit using two primary methods: via Wi-Fi through the ActiveCaptain app or by connecting it to your computer using Garmin Express. The Wi-Fi method allows you to connect the unit to your smartphone and download updates wirelessly. For the USB method, install Garmin Express on your PC, connect the unit via USB, and follow the prompts. Regular updates ensure bug fixes, performance improvements, and access to the latest chart data and sonar enhancements.

What is the advantage of ClearVü sonar in the GT20-TM transducer?

ClearVü sonar offers a near-photographic view beneath your boat, making it easier to identify fish, structure, and bottom hardness. Unlike traditional sonar, ClearVü provides high-resolution imaging by using a narrow sonar beam and higher frequencies (455/800 kHz). This is especially helpful in distinguishing between vegetation, rocks, and baitfish. The GT20-TM’s integration of ClearVü and CHIRP sonar gives you a comprehensive view of what’s under your vessel, improving fishing success.

Is this chartplotter compatible with other Garmin devices?

Yes, the Garmin ECHOMAP UHD2 73cv supports networking with other Garmin chartplotters via NMEA 2000 and NMEA 0183. It also supports Panoptix™ LiveScope, enabling real-time live sonar views. If you’re expanding your marine system, this unit fits seamlessly with Garmin radar, sensors, and compatible Yamaha engines via NMEA 2000. For the best outboard engine pairing, visit Yamaha Outboards.

What is the cost and durability of the Garmin ECHOMAP UHD2 73cv?

The ECHOMAP UHD2 73cv offers exceptional value for its price, typically ranging between $700–$900 depending on promotions. Built with marine-grade materials, the unit is waterproof to IPX7 standards, meaning it can withstand splashes, rain, and brief submersion. The display is UV-resistant, and all buttons are weather-sealed. With proper maintenance and care, this device can last 5–7 years or more, making it a worthwhile investment for any serious boater or angler.

Conclusion

The Garmin ECHOMAP UHD2 73cv U.S. Inland GN+ with GT20-TM Transducer is an exceptional choice for freshwater anglers and inland boaters. Its detailed mapping, sharp sonar clarity, and intuitive interface make it a top-tier GPS fishfinder that balances power and simplicity. Whether you’re upgrading your system or starting fresh, this device ensures you’re ready to fish smarter and navigate safer.

With strong support from Garmin, future-ready networking options, and seamless integration with other devices and outboards like Yamaha Outboards, it’s built for success both now and years ahead.

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