Tech Specs

In The Box
Power cable (15 m/49.21 ft)
Network cable (15 m/49.21 ft)
Mounting hardware kit and template
Installation instructions
Manual & Warranty
Do you have an old GPS unit lying around? The GPS Nation Trade In and Up program is a great way to trade in your old and used GPS for credit towards a new GPS. The choice is entirely yours! We’ve made the process simple and streamlined. Follow these simple steps, and you will be on your way to receiving credit towards your brand new GPS!
1. Get a quote
To get your free quote, provide your GPS type, manufacturer, model, and condition. Within 24 hours, you will receive a quote for the trade-in value of your current product. The GPS trade-in/trade-up form is at the bottom of this page.
2. Ship your product(s) for trade
After accepting our offer, pack your product(s) safely and ship them to us using the pre-paid shipping label provided to you. We will provide a confirmation email when your trade-in arrives at our warehouse. You have 30 days from the date you complete your on-line trade to ship the product to GPS Nation.
3. Make your purchase
Once we receive your product at our warehouse and we validate the stated condition, we will send you a confirmation email. If you elect to receive credit towards a new GPS at gpsnation.com, your store credit will be issued, and you are free to make your purchase.
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Tech Specs

In The Box
Power cable (15 m/49.21 ft)
Network cable (15 m/49.21 ft)
Mounting hardware kit and template
Installation instructions
Manual & Warranty
Trade-In
Do you have an old GPS unit lying around? The GPS Nation Trade In and Up program is a great way to trade in your old and used GPS for credit towards a new GPS. The choice is entirely yours! We’ve made the process simple and streamlined. Follow these simple steps, and you will be on your way to receiving credit towards your brand new GPS!
1. Get a quote
To get your free quote, provide your GPS type, manufacturer, model, and condition. Within 24 hours, you will receive a quote for the trade-in value of your current product. The GPS trade-in/trade-up form is at the bottom of this page.
2. Ship your product(s) for trade
After accepting our offer, pack your product(s) safely and ship them to us using the pre-paid shipping label provided to you. We will provide a confirmation email when your trade-in arrives at our warehouse. You have 30 days from the date you complete your on-line trade to ship the product to GPS Nation.
3. Make your purchase
Once we receive your product at our warehouse and we validate the stated condition, we will send you a confirmation email. If you elect to receive credit towards a new GPS at gpsnation.com, your store credit will be issued, and you are free to make your purchase.
Overview
Garmin GMR 18 HD3 (010-02843-00) - High-Definition Magnetron Radar
The Garmin GMR 18 HD3 (010-02843-00) is a compact yet powerful 18” dome radar designed to significantly enhance your situational awareness on the water. With its high-definition scanning capabilities and intuitive operation, this radar is your reliable companion for confident navigation. Featuring advanced target tracking and a high-resolution display, the GMR 18 HD3 ensures that you are always informed of your surroundings, enhancing safety and boosting your confidence during your maritime adventures.
Key Features
- 4kW Power Output: Provides clear echo definition at all ranges, with a maximum range of 36 nautical miles.
- Compact Design: Space-saving 18” dome, perfect for smaller vessels.
- MARPA Target Tracking: Effectively track selected vessels to avoid potential collisions (additional sensors required).
- Dynamic Auto Gain: Automatically adjusts gain levels for optimal visibility in various conditions.
- Dynamic Sea Filter: Tailors performance for calm, medium, or rough sea conditions to minimize clutter.
- Dual-Radar Support: Offers redundancy and allows multiple displays to gather data from different radar sources.
Data Insights
The Garmin GMR 18 HD3 boasts a maximum range of 36 nautical miles, making it a top performer in detecting vessels and obstacles. The high-resolution 8-bit true color radar ensures outstanding target separation while reducing screen clutter, allowing for a more efficient and safer navigation experience. With low-noise scanning technology, this radar operates quietly at a fixed speed of 24 rpm, conserving power while maintaining peak performance.
Usage Instructions
For optimal results, ensure that the Garmin GMR 18 HD3 is installed correctly on your vessel. Utilize the intuitive user interface to configure settings according to your navigation needs. Regularly update software and calibrate the radar for enhanced accuracy and performance.
Design & Material
The Garmin GMR 18 HD3 features a sleek, low-profile design that seamlessly integrates into your vessel. Crafted from high-quality materials, this radar is engineered for durability and reliable performance in varying marine environments.
- Durable Housing: Constructed from robust materials to withstand harsh sea conditions.
- Compact and Lightweight: Easy to mount while saving valuable space on your boat.
- Low-Noise Operation: Designed to function quietly, enhancing user experience.
- Easy Installation: Quick and straightforward setup without complex user settings.
- Modern Aesthetic: Harmonizes with various marine instruments and environments.
- Weather-Resistant: Built to endure rain, salt spray, and extreme temperatures.
Final Verdict
In conclusion, the Garmin GMR 18 HD3 (010-02843-00) is an indispensable tool for any serious mariner. With its advanced features and reliable performance, this compact radar solution will enhance your safety and navigation confidence on the water. Don't miss out on the opportunity to elevate your boating experience—get your Garmin GMR 18 HD3 today!