How to read sonar fish finder

A good presentation on the technology. You demonstrated clearly how 2D clearly identifies fish and you made a point of confirming the dots as fish in 2D. When learning how to read a fish finder youll notice that fish appear as arches in traditional sonar imaging. Best of all this type of fish finder also displays vegetation rocks and schools of fish. The display will only show two colors typically black and yelloworange. The information then gradually moves to the left as its replaced with fresher data.

6052020 Arch length doesnt correlate with fish size it simply indicates that a particular fish spent a.

So your screen is effectively showing you a slice of the water column over a period of time. Fish will appear similar to a 2D sonar but will be easier to distinguish from nearby structures. 3112018 The arches on your fishfinder can either be full or half arches. Reading down imaging sonar is similar to reading traditional 2D sonar. The frequencies used vary ranging from very low infrasonic to very high ultrasonic. They work by sending out sound pulses and waiting for an echo. The information that these devices produce are products of sonar technology. 21062020 As a general rule of thumb for traditional sonar when using the lower frequency 50 kHz or 83 kHz the width diameter of the sonar cone of the area of the bottom you are scanning is roughly equal to the depth. The display will only show two colors typically black and yelloworange. How to Read a Humminbird Fish Finder Fishfinders can show you exactly whats below your boat by using sonar technology. 2D being old school sonar.