What is a Fishfinder and How Does it Work?

A fish finder is a device boatmen use to locate fish in the water. Fishfinders work on the SONAR (Sound Navigation and Ranging) technology. A fish finder is an essential device in today’s fishing sector and for those looking forward to fishing as a leisure activity.

A fishfinder displays the location of a fish on a digital screen that can be either an LCD or a CRT type. The fishfinder technology was first used in the 90s and has been constantly upgraded. In today’s times, the fishfinders’ technology is developed to include systems like GPS, electronic compasses and radar, making the device even more reliable than ever.

Working & Display of Fishfinder

There is a transmitter located on the ship, which sends signals in the waves. The SONAR system uses the aspect of echoes to reflect the waves to the transmitter. The reflected waves are recorded, and a signal is sent to the screen.

To make sure the signals received are not false, the waves coming after getting reflected from fish are displayed differently than those coming from stones, corals or other obstructions. Thus, echoes differ in size and form when fishes are in the water, unlike when the water is clear of fishes. Things other than fishes are displayed with different symbols.

The display screen shows the presence of a fish in the water with the help of a symbol in the form of a fish. This display sometimes changes to arches on the screen when the boat is cruising over that part of the water where the fish are located. However, the display of the fish is unique so that the person monitoring the digital screen will not have any confusion regarding the presence of fish and other underwater plants and stray weeds.

Fishfinders Available in the Market

There are different types or brands of fishfinders that are available. The most popular ones are the Humminbird Piranhamax and Humminbird solix fishfinder, the Lowrance fishfinder, the Eagle fishfinder, the Garmin echomap UHD fishfinder, and the Furuno fishfinder. Each of these types is unique as they offer different depths to which the technology can penetrate the water and display the presence of fish. The Lowrance fishfinder models are very important because these models help to locate fish, especially in cold and icy areas. The price of a fishfinder starts at a modest price of US $ 100. The prices vary according to the different models of fish finders.

All these models have many features and run on rechargeable batteries.

LINKS: Ezinearticles, Britannica, Fishfinder

Frequently Asked Questions

1. What is the easiest fishfinder to use?

The HOOK² 7 SplitShot is the easiest to use and features an autotuning sonar, High CHIRP and DownScan Imaging. It is pretty affordable as well.

2. How to choose the perfect fish finder for yourself?

To pick the perfect fishfinder, one should consider the unit, whether it includes the GPS and is a part of the boat-wide network, the size of the fishfinder’s footprint, the resolution of the display, the amount of transmitting power needed, and what kind of frequencies would work best in the region ( inland, coastal or deepwater) where you fish.

3. What is the difference between a fish finder and a depth finder?

A depth finder gives all information about the water depth. However, a fish finder provides data on fish and other underwater structures, depth and much more.

4. What is the best size of a fish finder?

If someone is excellent at reading a fish finder, then one can manage with a 4-inch display, but a seven or 10-inch display would be convenient, especially if it has a split screen mode.

5. Do you need mapping on your fish finder?

Accurate fishing maps are essential for identifying offshore humps, midlands, flats, channels or other places where fish are abundant. Digital GPS maps help people know about crucial fishing zones or areas for a quality fishing experience.

 

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2 Comments

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