Re: Re: Re: measuring downrigger ball depth / pearl DB
The fishfinder only tells you how far the fish is from the transducer. The transducer has a cone of operation, it looks down and down and out to the side of the cone. What you see for depth of the response is true but, it maybe to the side.
Read this article for more information and graphics. A picture is worth a thousand words.
Then how deep is the fish??? (page 9)
http://www.hightechfishing.com/other/Lowrance_Tutorial.pdf
