The thrill of any fishing adventure begins with finding the right place to wet your line.
Fishfinder allow anglers to quickly identify key targets and structure, as well as fish.

A Fish Finder is a subset of a group of instruments called sonars.

A Sonar consists of a transmitter, transducer, receiver and display.

In the simplest terms, an electrical impulse from  a transmitter is converted into a sound wave by the transducer
and sent into the water. When this wave strikes an object, it rebounds.

This echo strikes the transducer, which converts it back into an
electric signal, which is amplified by the receiver and sent to the
display.

Since the speed of sound in water is constant (approximately 4800
feet per second), the time lapse between the transmitted signal and the
received echo can be measured and the distance to the object
determined. This process repeats itself many times
per second.

DISPLAY:
The display shows a history of the received echoes.
The user can make a number of adjustments to tailor the display to his
or her preference, such as senitivity, the depth range and chart speed.
Displays use a variety of technologies,
provide different
resolutions and number of shades of gray or color. Each display is made
up of a number of pixels, which are little square blocks that make up
the images.

The more pixels and shades of gray or color the better resolution and image clarity.

Fish Targets:
Echoes from fish within the beam will be shown on the display by illuminated pixels.
What
image appears on the display depends on a number of factors: the
sensitivity setting on the fishfinder, the cone angle of the
transducer, the speed of the boat, and the size, depth, speed and
direction of the fish. A fish that is swimming directly
beneath
the boat, it will create a consistent echo that will cause a continuous
line to appear on the display. A stationary fish caught in a narrow
beam transducer appears as a single point on the screen as the boat
passes above it, whereas under the same
conditions the fish appears as an arch if a wide beam transducer is used.

To read moore of How Fish Finders Work, or select Fish Finder that right for you, please visit our site at: http://www.bystore.org
Almost anyone can now afford to own a unit that will assist in a better fishing.

Andrei Loskoutov