Humminbird 409640-1 HELIX 5 SI Review

Fishing is undoubtedly one of the most relaxing outdoor activities. Make your fishing experience more interesting with Humminbird 409640-1 HELIX 5 SI Review.

Sometimes you have to spend hours and hours sitting in front of the water and end up with no catch at the end of the day. For people who are keen on such sport, to avoid these depressing situations, equipping yourself with a GPS locator will maximize your fishing experience and make things easier.

The Humminbird 409640-1 HELIX 5 SI Fish Finder can assure you some fish each time you decide to sail your boat. This fish finder GPS combo is probably the best below $500 equipment available right now.

Humminbird 409640-1 HELIX 5 SI

What are the best features of Humminbird 409640-1 HELIX 5 SI Finder?

Sonar and Transducer

There are three types of sonar offered by the Humminbird HELIX 5 SI GPS, which are Side Imaging, Down Imaging, and DualBeam Plus. The combination of the former two in a single product can provide more precise locations of the fish underwater.

Supporting these three types of sonar is the XNT 9 SI 180 transducer. It has a built-in temperature sensor which can track the temperature of the water. This transducer comes with 20 ft. (6 m) of cable and a transom mount.

Traditional sonar view is the best to use if you’re looking for fish. Most of the time, fish appear as arches and look distinct from other vegetation or objects. Moreover, this sonar has a depth capability is up to 1,500 ft. (457 m) with some other standard features, including Fish Alarm, Selective Fish ID, Bottom Lock, Real Time Sonar, SwitchFire, Circular Flasher for ice fishing, etc.

A nicely compact SI transducer is another wonderful segment of the Humminbird HELIX 5 SI fish finder. It works perfectly with different mapping cards and is adaptable to making auto chart with the help of the Pro self-mapping software.

Precision GPS

The Humminbird HELIX 5 SI GPS fish finder provides its users the precise location of fish underwater, making the most of their angling experience. With a joined GPS antenna inside, the device is able to give correct readings for accurate navigation based on the fishing hot spots.

Safety is the number one reason why the Humminbird HELIX 5 SI GPS has our absolute adoration. It sounds impossible to find your way back from out there in the middle of the vast waters. However, with HELIX 5 SI’s prevision GPS, you will be aware of your location, your direction and the things around, or beneath you. You will also know about the nearest shore, nearest docks, things like that and even more. And don’t forget that, compared to regular handheld GPS devices, the precision GPS is much more intuitive and visually clearer. Hence, using this is a real treat for you!

In addition to that, you can benefit more than what’s just been said: waypoints can be recorded. Indeed, you can save the coordinates of the locations alphabetically, which makes the searching much faster and easier. This helps you to keep track of danger spots, barren spots, and come back to your favorite fishing area anytime you want, etc.


This model features a 5-inch screen, which is quite sufficient given the price. For a small unit like this one, a color TFT display (grayscale color 256) and a pixel resolution of 800H x 480V really make it worth considering: they form sharp and clear images on the screen. A LED backlight is integrated into the display so you should have no problem looking at the screen at night or under direct sunlight. Technically, the screen is also resistant to rain and incidental water exposure because it is IPX7 waterproof.

Humminbird 409640-1 HELIX 5 SI display


Earlier we did mention this device storing some data, so you might be wondering how.

Well, The HELIX 5 SI isn’t afraid to go an extra mile to provide top-notch features. You will be able to save the sonar feed for future usage. This function helps you to avoid complications when you need to look back on specific spots without having to scan that certain area again. In order to do that, though, a data micro SD card is required. The SD card is inserted into the unit and do the storing job, not the unit’s memory itself.

Why you should buy Humminbird 409640-1 HELIX 5 SI

Briefly saying, the Humminbird HELIX 5 SI GPS is a fish finder and a chart plotter device, using Down Imaging, Side Imaging, DualBeam Plus Sonar, the UniMap charts and the GPS. It provides three types of sonar, all of which are supported by the XNT 9 SI 180 T transducer.

This device is a perfect match for lake fishing, and also off-shore if 2D sonar is okay for you. A wide array of fishing boats can count on it. Finally, despite costing roughly equal to the new HELIX 5 CHIRP SI GPS G2 unit, it still receives a lot of positive feedback from anglers around the USA.

Humminbird 409640-1 HELIX 5 SI Review

If the thought of sailing a boat to go fishing unnerves you, this device is exactly designed for you. Experienced anglers will surely benefit a lot from it.


  • Extremely sharp display screen
  • Excellent GPS navigator
  • Precision GPS with UniMap technology
  • Side-by-side viewing of GPS, sonar, Side Imaging and Down Imaging
  • Depth scanning capability of up to 1,500 ft.
  • Thorough customer service
  • Free software update without expiration date


  • Basic mapping of geography
  • No water depth charts
  • Compatible software for Marine maps: 2GB Navonics World (MSD/NAV+W) only


Fishing isn’t necessarily frustrating and complicated. What you need to turn fishing into a truly leisure activity is the Humminbird 409640-1 Helix 5 SI Fish Finder with GPS and Side Imaging. From the integrated GPS to the vivid display, it hardly lacks of any features, which makes it super user-friendly and incredibly precise. Yet, Humminbird 409640-1 HELIX 5 SI review appears to give you a through insights to make your best choice.  Furthermore, Humminbird never ceases to introduce more and more innovations in order extend anglers’ experience even further in the future.

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