In the simplest form, an electrical impulse from a transmitter converted into a sound wave by the transducer and sent into the water. When this wave hits a object, it rebounds. This echo frames transducer, which converts it back into an electrical signal which is amplified by the receiver and sent to the screen. Since the speed of sound in water is constant (about 4800 meters per second), the time between the transmitted signal and the received echo to be measured and the distance to the particular object. This process repeats itself many times per second.
Display: 
The display shows a history of the received echoes. The user can make some adjustments to tailor the display to his or her preferences, such sensitivity, depth and speed chart. Displays use a variety of technologies, provide different resolutions and the number of grayscale or color. Each display is composed of a number of pixels, which are small square blocks forming images. The more pixels and grayscale or color in better resolution and picture quality.
Fish Goal:
Echoes from fish in the bar will be displayed on the screen by said pixels. What image appears on the screen depends on several factors: the sensitivity setting on the Fishfinder, cone angle of the transducer, speed of the boat, and the size, depth, velocity and direction of the fish. A fish swimming directly below the boat, it will create a consistent echo that will cause a continuous line to be displayed on the screen. A stationary fish caught in a narrow beam transducer appears as a single point on the screen as the boat passes over it, whereas under the same conditions for the fish looks like an arc, if a wide beam transducer is used.
You can read more about how fish finder work or choose a fish finder that right for you, please visit our website at: www.bystore.org. Almost everyone can now afford to own a device that will help you with a better fishing.
