Fish finders play an important role in making work easier for fisherman, anglers and others who ply their trade in water. They provide the right information so that when anglers and fishermen get into the water. Reading the sonar images that appear on the fish finder’s screen is not a common skill. This is because sonar technology has only been allowed for the commercial use for a few years. It is therefore important to understand how to read the screen before buying and taking one to the water.
How Does a Fish Finder Work?
On the lower side of the fish finder is a transducer. This part of the finder is normally placed inside the water from which fish are to be sought. The transducer produces sonar waves which go into the water. After the waves explore the water, they return to the transducer. Once they return to the transducer, it gauges the speed with which the waves return. This is used to calculate the distance from which the waves return. The transducer also calculates the rate at which the waves return once they have been sent out.
The data returned from the transducer is then converted into lines and arches. The lines and arches are arranged at different levels. The position of the lines upon which fish appear in the image is an indication of how deep in water they are. For a great list of features and how fish finders work see this list of fish finder reviews for in depth comparison and detailed information about features you might need for your device.
Over and above the position of fish, the transducer shows the depth of the water beneath the boat. This information is important for fish finding because different types of fish live in different depths of water. information on the depth of water is usually on display at the top left hand side of the of the fish finder’s screen. They are usually displayed in meters.
Water temperature is also taken by the transducer. Water temperature is also indicated on the top left side of the screen below the depth reading. Water temperature is another way to know the type of fish that may be expected in that particular part. So, when the fish are found on the screen it is possible to tell whether the fish are worth the angler’s time or not.
Fish finders also shows the speed at which the boat is moving. This information helps the fisherman determine whether it is possible for them to catch fish. It also informs them of the distance from where they are at any given time and where they had found the fish.
Understanding the Color Code
The best fish finders are in color. Those that support grayscale may also give accurate information to those who know how to read the information. When the echo retuned from the sonar waves sent in the water is strong, the lines on the fish finder screen are darker when the finder is in greyscale. Where the finder is in color, the lines appear in a strong color.
The strength of the echo is determined by the hardness of the material that returns it. Thus, if the echo has been returned by soft soil, it is light. If, on the other hand, the echo returns from a hard surface, the line is thicker.
For information appearing on a fish finder screen to make sense, the reader must be knowledgeable about types of fish and their habitat. Some fish are likely to be found on water bodies with soft beds while others may be found on water bodies with hard beds. It is also noteworthy that the accuracy of readings such as depth and water temperature is dependent on the type of the fish finder in use.