Keypad control: Master HELIX at the touch of a button.All HELIX 7 G4N models support Ethernet networking, Bluetooth(R), NMEA 2000(R), Wi-Fi and are compatible with the One-Boat Network(TM), which means you'll have total control of your fishing machine at your fingertips. An upgraded high-definition 7" display will give you the best view of the many pre-loaded split screen view options so that you'll never miss a fish. The rating determines how and where you will use the fishfinder.The HELIX 7 CHIRP MEGA DI GPS G4N fish finder features MEGA Down Imaging, Dual Spectrum CHIRP Sonar, AutoChart Live, Internal GPS and Humminbird Basemap built-in. Finally, a rating of 8 allows you to be underwater for extended periods of time. With a rating of 7, you can submerge the unit below 10 feet for 30 minutes. a JIS/IPX rating of five or six means that the fishfinder can withstand water jets from low to high pressure. These are more or less the same, but each determines the level of waterproofing of a given unit.Ī rating of four means that a given unit will not splash, so it will not run well in a kayak, for example. You should always check the JIS or IPX rating. Water resistance will be critical if you are going to mount your device on a smaller open container. Even if you can find fish, you may not be able to display them on the screen.įinally, there is a more important consideration. Many entry-level models have very small screens, no larger than a cell phone. This means better quality, accessibility to structure, digital readouts and easier to view and identify graph plotting. The larger the screen, the larger the viewing area. As a rule of thumb, choose the largest unit you can afford. As a backup plan, this is a good choice, but for your main unit, a larger unit is ideal. Usually, the lower end units are always smaller. Screen size is another aspect of your fish finder that you should consider. Sonar waves bounce off surfaces, fish and debris and return to the device. The transducer converts electrical pulses into sound waves, which are then transmitted to the water. The better the quality of the transducer, the more accurate the position of the fish will be. It is the most important part of the fish finder and determines the quality of the image your viewfinder will show. The transducer converts energy from one type to another. When choosing a fish finder, you need to ask yourself some key questions to determine the best choice for you. You can also view different images of the water in separate screens to ensure optimal clarity. You can access the AutoChart feature, which provides live images while you are in the water, and you can even get up to 8 hours of recording time.Īll functions are connected to buttons on the side, which means you don’t have to dive into tools or menus to find what you need. The mount can be quickly installed or released, so it’s easy to use and remove.Īnother nice feature is that the Helix 9 offers two different SD card slots so you can record large amounts of data, install updates or replace the card for more capacity. The plug-and-play nature of this fishfinder ensures that you can have it in standard configuration in minutes. Not only that, it’s also light enough to ensure you have no problems using it. The dimensions are 13.4W, 7.12H and 4.2D inches, which makes the unit easy to install and carry depending on your preference. Most 9-inch fishfinders are quite bulky and heavy.
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