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The Right Sonar

Navigators use Sonar, as fish finders and depth finders to find locations for a good catch or to generally know what other objects lay between their vessel and the water bed. All sonar consists of a transmitter, transducer, receiver, and display. By sending electrical pulses using the transmitter, the transducer, a device capable of changing energy from one form to another, sends a sound wave through the water down to the sea floor (vertical configuration) or horizontally (forward looking configuration). The sound wave will eventually bounce back after hitting an object (depending on the distance) and the transducer will pick up this reflected sound wave and reverse the process. The time difference between the transmitted pulse and the reflected one can be used to calculate the distance, dimension, bearing etc.

Most of the humminbird transducers produced, and other depth finders of the same class will give you vertical images or a bird's eye view of the underwater; or a horizontal view which is a view of your position relative to the horizon; operational frequency is usually below 200 KHz. Lowrance fish finder, Humminbird fish finder, Garmin fishfinder all rely on the same principle, and depth finders in general all utilize echo location to measure characteristics of objects within the water and display an image of that result to you on screen. Lowrance is accredited for being the original makers of commercial sonar and tweaking their application for fishing and marine activities. You can get more information on the various types of hummingbird transducers, hummingbird fish finder, Garmin fishfinder, and lowrance fish finder and all the latest technology news for frequency radios at www.Sailradios.com.

The iScan V90 sonar is a depth finder and a fish finder combined, developed by Interphase. It is a complete navigational tool with a coupled transducer, used mostly on light commercial and recreational marine vessels. The iScan V90 has plenty of advanced features; It's display will can show you how deep the water level are, sand banks,  dangerous reefs, the structure of the seabed and other objects underwater such a schools of fish. It is portable and very easy to install because of its compact size; but don't let its size fool you as the iScan can measure accurately up to a depth of 600 feet below and has Hi powered forward range of up to 1200 feet of your boats bow.

It comes with a large 16 inch LCD that can be viewed in harsh sunlight for you convenience; it has one-touch capabilities for the user as well. The display constantly updates in real time, all the information you will need. This depth finder allows you to connect video input such as your camera, VCR or DVD players as well; and it gives you selectable color schemes to work with i.e. night, sun and normal. In addition to this feature rich depth finder, the V90 is fog and waterproof.