Tech Specs

In The Box
Power cable (15 m/49.21 ft)
Network cable (15 m/49.21 ft)
Voltage converter
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)
Voltage converter
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 1234/1236 xHD3 Open Array Radar and Pedestal (K10-00012-26)
The Garmin GMR 1234/1236 xHD3 Open Array Radar and Pedestal is engineered for serious offshore mariners seeking unparalleled performance and reliability. With advanced scanning capabilities and robust construction, this radar system is designed to enhance situational awareness, making it easier to navigate through busy waters while ensuring safety and efficiency. The high-definition imaging technology and powerful radar output ensure clarity in all conditions, allowing you to detect weather patterns, obstacles, and other vessels with impressive accuracy.
Key Features
- Power Output: Available in 4 kW, 12 kW, or 25 kW for optimal detection capabilities.
- Maximum Detection Range: Up to 96 nautical miles with the 25 kW version.
- Wind Rating: Commercial-grade rating up to 100 knots for durability in harsh conditions.
- True Echo Trails: Displays historical trails to reduce motion distortion.
- Dynamic Auto Gain: Automatically adjusts gain settings for enhanced performance.
- MARPA Target Tracking: Track up to 30 targets for improved situational awareness.
Data Insights
Performance statistics reveal that the Garmin GMR 1234/1236 xHD3 significantly reduces false targets, thanks to its Scan Averaging Technology, which filters out sea clutter effectively by up to 75%. This technology, combined with improved target-size processing, enables users to interpret object shapes with remarkable precision across various range scales.
Usage Instructions
For optimal results, install the radar unit at an appropriate height to ensure an unobstructed view. Regularly calibrate the settings for gain and filter to adapt to changing sea conditions, and utilize the split-screen dual-range display for effective monitoring of multiple targets simultaneously.
Design & Material
The design of the Garmin GMR 1234/1236 xHD3 features a sleek, modern appearance that seamlessly integrates with your vessel's aesthetics. Its robust build quality ensures longevity and reliability in marine environments.
- Material: Constructed from high-grade, marine-rated materials for resistance to corrosion.
- Antenna Design: Features a narrow horizontal beamwidth for precise target separation.
- Drive Motor: Equipped with a quiet open-array drive for minimal noise levels.
- Rotation Speed: High-performance antennas with 24 and 48 RPM rotation speeds.
- Dynamic Filters: Adaptive filters for optimal operation in various sea conditions.
- Customizable Display: Flexible display options to cater to individual navigation preferences.
Final Verdict
The Garmin GMR 1234/1236 xHD3 Open Array Radar and Pedestal is an essential tool for any serious mariner. With its cutting-edge technology, robust design, and exceptional performance, it provides the confidence needed for safe and efficient navigation. Elevate your boating experience—invest in the Garmin GMR today!
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