What Angles Cover Dual Beam Fish Finder?

By Wade Johnson

What Angles Cover Dual Beam Fish FinderThe tool which transfigures fishing is the fishfinders. There are many types of fish finders, and all of them work on the same principle, but the working conditions and their application can vary from each other . Moreover the price range may vary too.

Fishfinders do not look specifically in all the directions but what they see in the conic pattern means their coverage area increases with the depth. The visibility of the fish finder depends very much on the angle of propagation. The tip is termed the sideway ability in which the fish finder can look.

Most fish finders have more than one frequency range, and these different beams have different angles. This article will discuss the angles that the dual-beam fishfinder covers.

What Is Beam Fish Finder

The fish finders have evolved much, and now they are mainly purpose-built. There are many kinds of fish finders, and each has its purpose. Fishfinder works by sending a wave of a particular frequency, and when it comes back after striking some object, it gets detected. The general rule is the same, but the sound waves’ frequency and wavelength also matter.

What Angles Cover Dual Beam Fish Finder?

Low-Frequency Waves

The low-frequency waves are good for scanning a large area as they can cover more distance than high-frequency waves. This makes them eligible to check the bottom of the lake, and they can also be used for large cross-sections. The low-frequency waves have high energy, and they can travel more distance before they disintegrate. This feature comes with a drawback. They are not accurate and are used for general scanning of the area. The wavelength of these waves is more than 1 inch, so only the fish with a cross-section of 1 inch or more can be caught by them. They are, however, great for finding the structures and the bottom.

High-Frequency Waves

The high-frequency waves usually have an operating frequency of 200 kHz, but they can be high to about 800 kHz, depending on the type of scan you are doing. They can only travel a few feet before their effect wears off and can identify the fishes less than quarter inches in size. This makes them suitable for pinpointing the location of the fish and the type and length also, but they can not travel much distance.


Dual Beam Fish Finder

Both the frequency ranges have their advantages and limitations. The dual-beam fishfinder employs both methods to get a broader and more accurate view of the underwater environment. The only limiting factor in that is the angle. The angle of the dual-beam fishfinder is essential because to find the exact position of the fish, understanding the tips is very important.

The angle of the 50 kHz beam can range from 35 to 35 degrees, but in some conditions, the user can adjust them to monitor the area at a 65-degree angle. They are great for comprehensive scanning and can go from 0.7 times of depth to twice the size compared to the deep. This depends on the tip of the low-frequency beam. In normal conditions, at that depth of 20 feet, you can observe the area of 20 feet in each boat’s direction.

The angle of high-frequency waves is not as high as that of low-frequency waves and can only go from 15 to 20 degrees. This means that they can only see one-third of the depth in each direction. When scanning the depth of 20 feet, you are just observing the 7 feet with high-frequency waves. The advantage is that you can tell the type and size of fish if you understand the sonar readings.

Final Verdict

The low-frequency and high-frequency waves have their advantages and limitations. The dual-beam fishfinder can cover a large area when it scans something in the vicinity. You can go near that part to further identify the signal with the high-frequency waves. With the help of a dual-beam fishfinder, fishing has become easier as you know where the tendency of finding the fish is maximum.

Wade Johnson
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