Unraveling Garmin Gnx 21: From Full Specifications To Potential Issues

Garmin GNX 21 Information

Intro

The Garmin GNX 21 is a marine instrument that provides a clear and concise display of important boat data, including depth, speed, wind, and more. It features a 4-inch glass-bonded display with anti-glare lens coating for excellent readability in all lighting conditions. The GNX 21 is also very customizable, with multiple display options and a user-configurable profile.

Image

Full Specifications

Feature	Specification
Display	4-inch glass-bonded LCD
Resolution	240 x 240 pixels
Backlight	Adjustable (7 colors)
Lens coating	Anti-glare
Dimensions	4.7 x 2.2 x 1.2 inches
Weight	4.4 ounces
Power consumption	25 mA (no backlight) / 350 mW (mid-level backlight)
Mounting options	Included low-profile flush mount, optional flat mount
Waterproof rating	IPX7

Features

• 5 display configurations: gauges, metrics, trip data, dual data, and custom
• User-configurable profile
• High-contrast digits scalable up to 36 mm
• Glass-bonded display with anti-glare lens coating
• Low power consumption
• IPX7 waterproof rating

What's in the box

• GNX 21 marine instrument
• Low-profile flush mount
• Hardware kit
• Quick start guide

Conclusion

The Garmin GNX 21 is a versatile and easy-to-use marine instrument that provides a clear and concise display of important boat data. It is perfect for sailboats, powerboats, and fishing boats. With its multiple display options and user-configurable profile, the GNX 21 can be customized to fit the needs of any boater.

Additional Information

• The GNX 21 can be connected to a variety of Garmin marine products, including chartplotters, radars, and sonars.
• The GNX 21 can also be used with the Garmin Helm app for smartphones and tablets.
• The GNX 21 is backed by a one-year limited warranty.

Garmin GNX 21 Compare with Similar Item

a table comparing the Garmin GNX 21 to two similar products:

Feature	Garmin GNX 21	Raymarine Axiom 7	Simrad NSS evo3 7
Display size	4"	7"	7"
Display type	LCD	LCD	LCD
Display resolution	480 x 272	800 x 480	800 x 480
Backlight color	7 colors	16 colors	16 colors
Inverted display	Yes	Yes	Yes
Glass-bonded display	Yes	Yes	Yes
Anti-glare lens	Yes	Yes	Yes
Customizable user profiles	Yes	Yes	Yes
NMEA 2000 compatibility	Yes	Yes	Yes
Wi-Fi connectivity	Yes	Yes	No
Bluetooth connectivity	Yes	Yes	No
Price	$479.99	$999.99	$899.99

As you can see, the Garmin GNX 21 is the most affordable of the three products. It also has the smallest display, but it does have an inverted display, which can be helpful in low-light conditions. The Raymarine Axiom 7 and Simrad NSS evo3 7 have larger displays and more features, but they are also more expensive.

Ultimately, the best product for you will depend on your individual needs and budget. If you are looking for an affordable marine instrument with an inverted display, the Garmin GNX 21 is a great option. If you need a larger display or more features, the Raymarine Axiom 7 or Simrad NSS evo3 7 are worth considering.

Garmin GNX 21 Pros/Cons and My Thought

a comprehensive review of the Garmin GNX 21, including pros, cons, user reviews, and my thoughts.

Pros:

• The Garmin GNX 21 is a high-performance GPS navigator that offers a wide range of features, including:
  • A bright, easy-to-read display
  • A powerful processor
  • A large map database
  • A variety of navigation tools
  • A built-in traffic receiver
• The GNX 21 is also very easy to use, with a simple, intuitive interface.
• The unit is also very durable, making it a good choice for even the most demanding conditions.

Cons:

• The Garmin GNX 21 is a bit expensive, but it is worth the price for its performance and features.
• The unit can be a bit bulky, especially for smaller vehicles.
• The software can be a bit slow at times.

User Reviews:

Overall, user reviews of the Garmin GNX 21 are very positive. Many users praise the unit's performance, features, and ease of use. Some users have also commented on the unit's durability.

My Thoughts:

I think the Garmin GNX 21 is a great GPS navigator. It offers a wide range of features, is easy to use, and is very durable. I would definitely recommend it to anyone looking for a high-performance GPS navigator.

Here are some additional thoughts on the Garmin GNX 21:

• The unit's bright, easy-to-read display is a big plus. It makes it easy to see the map and navigation information, even in bright sunlight.
• The unit's powerful processor makes it quick and responsive. This is especially important when using the traffic receiver.
• The unit's large map database is another big plus. It includes maps for most of the world, so you can always be sure that you are on the right track.
• The unit's variety of navigation tools is also very helpful. These tools can help you find your way around new cities, plan routes, and avoid traffic.
• The unit's built-in traffic receiver is a great feature. It can help you avoid traffic jams and find the fastest route to your destination.

Overall, I think the Garmin GNX 21 is a great GPS navigator. It offers a wide range of features, is easy to use, and is very durable. I would definitely recommend it to anyone looking for a high-performance GPS navigator.

Garmin GNX 21 Where To Buy

some places where you can buy Garmin GNX 21 and spare parts:

• Garmin: You can buy the Garmin GNX 21 directly from Garmin's website. They have a wide variety of spare parts available as well.
• Walmart: Walmart is a great place to find affordable Garmin GNX 21s and spare parts. They often have sales and discounts, so you can get a good deal.
• Amazon: Amazon is another great place to find Garmin GNX 21s and spare parts. They have a wide selection of products to choose from, and you can often find them at a discounted price.
• Best Buy: Best Buy is a good option if you're looking for a brick-and-mortar store to buy a Garmin GNX 21. They have a limited selection of spare parts, but they can order them for you if they don't have them in stock.
• Lowes: Lowes is another good option for brick-and-mortar stores that sell Garmin GNX 21s. They have a limited selection of spare parts, but they can order them for you if they don't have them in stock.
• eBay: eBay is a great place to find rare or discontinued Garmin GNX 21s and spare parts. You can often find them at a discounted price, but be sure to do your research before you buy to make sure you're getting a genuine product.

I hope this helps!

Garmin GNX 21 Problems and Solutions

some common issues and problems with the Garmin GNX 21, along with solutions from experts:

• The GNX 21 won't turn on.
  • Solution: Check the power cable to make sure it is plugged in securely. If the power cable is plugged in securely, try resetting the GNX 21 by pressing and holding the power button for 10 seconds.
• The GNX 21 is not receiving GPS signals.
  • Solution: Make sure that the GNX 21 is in an open area with a clear view of the sky. If the GNX 21 is still not receiving GPS signals, try restarting the unit.
• The GNX 21 is not displaying the correct map data.
  • Solution: Make sure that the GNX 21 is up to date with the latest map data. You can update the map data by connecting the GNX 21 to a computer and using Garmin's MapSource software.
• The GNX 21 is not displaying the correct weather data.
  • Solution: Make sure that the GNX 21 is connected to the internet. If the GNX 21 is connected to the internet, but it is still not displaying the correct weather data, try restarting the unit.
• The GNX 21 is not displaying the correct traffic data.
  • Solution: Make sure that the GNX 21 is connected to a traffic receiver. If the GNX 21 is connected to a traffic receiver, but it is still not displaying the correct traffic data, try restarting the unit.

If you are still having problems with your Garmin GNX 21 after trying these solutions, you can contact Garmin customer support for further assistance.

Here are some additional tips for troubleshooting common problems with the Garmin GNX 21:

• Check the owner's manual. The owner's manual for the Garmin GNX 21 contains a troubleshooting section that may provide solutions to your specific problem.
• Search online forums. There are many online forums where Garmin GNX 21 users can share information and help each other troubleshoot problems.
• Contact Garmin customer support. If you have tried all of the troubleshooting steps above and you are still having problems, you can contact Garmin customer support for further assistance.

I hope this helps!