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Introduction to Sonar at Cabela's

Introduction to Sonar

Author: Lowrance

Every person fishing has had the same problem - finding fish and getting them to bite. Sonar can’t make the fish bite, but it can solve the problem of finding fish.

You canít catch fish if you canít find them!
People have been fishing for thousands of years. Every person fishing has had the same problem - finding fish and getting them to bite. Although sonar can’t make the fish bite, it can solve the problem of finding fish. You can’t catch them if you’re not fishing where they are - and the Lowrance sonar will prove it.

In the late 1950’s, Carl Lowrance and his sons Arlen and Darrell began scuba diving to observe fish and their habits. This research, substantiated by local and federal government studies, found that about 90 percent of the fish congregated in 10 percent of the water on inland lakes.
As environmental conditions changed, the fish would move to more favorable areas. Their dives confirmed that most species of fish are affected by underwater structure (such as trees, weeds, rocks, and drop-offs), temperature, current, sunlight, and wind. These and other factors also influence the location of food (baitfish, algae, and plankton). Together, these factors create conditions that cause frequent relocation of fish populations.

During this time, a few people were using large, cumbersome sonar units on fishing boats. Working at low frequencies, these units used vacuum tubes which required car batteries to keep them running. Although they would show a satisfactory bottom signal and large schools of fish, they couldn’t show individual fish. Carl and his sons began to conceptualize a compact, battery operated sonar that could detect individual fish. After years of research, development, struggle, and simple hard work, a sonar was produced that changed the fishing world forever.
The Little Green Box
Out of this simple beginning, a new industry was formed in 1957 with the sale of the first transistorized sportfishing sonar. In 1959, Lowrance introduced "The Little Green Box" which became the most popular sonar instrument in the world. All transistorized, it was the first successful sportfishing sonar unit. More than a million were made until 1984 when it was discontinued due to high production costs.
Welcome to the 21st century!
We’ve come a long way since 1957. From "little green boxes" to the latest in sonar and GPS technology, Lowrance continues to lead in the world of sportfishing sonar.