Basics of Using A Fish Finder : An Useful Quick Overview

Fish finder is becoming popular day by day. It’s a very useful device for anglers because determining the depth of water is safe to do fishing with fish finder and Fishing in the icy water is very tough without using the fish finder. Fathometers are active instruments that are used for navigation and this device is derived from these. Let’s learn the basics of using a fish finder in the later part.

First of all, we’ve to understand what is a fish finder.

What is a fish finder?

A fish finder is an instrument that detects reflected pulses of sound energy. So that it is used to locate fish which lives in underwater. In Australia, people call it sonar. The Marine Rader, the compass and the GPS navigation systems these three integrate and makes a high degree fish finder system.

Fish Finder Basics

Sonar is required to operate all types of fish finder. It produces a sound wave and sent it through the water and after reflecting from fish it returns back to the receiver. There are some basics of using a fish finder and to operate it properly.


Beam means a cone that forms by spreading the sound wave. When something within this beam is encountered by sound wave, it returns to the fish finder. This small amount of time is calculated for finding fishes through the fish finder.

Cone Angles:

Angular measurement of the sonar beam is called the cone angle. It is represented in degrees. Fish finder model and manufacturer are a variable for cone angle.

Fish Targets:

The unprocessed sonar return that is called an "arch", or as a Fish ID symbol helps to display the fish targets.

Water Clarity:

Integrity of the signal is greatly affected by water’s clarity. Strong winds or currents can create bubbles in the water and it will create disperse the signal.

Thermo clines:

Thermo clines are called the "fronts" .It means where warmer waters intersect with cooler waters. It has a great impact because fish normally prefer a certain temperature to live and it will help to figure out the exact position of fish.


The electrical signal is taken from a transmitter via transdeucer. It then turns it into sonar. It will then send it out. All returning echoes are captured from it and then it converts them into electrical signals.

Transom Mount:

The transom-mount transducer is the easiest to install. A plastic transducer is appropriate for aluminum or steel-hulled boats, because it helps to avoid potential electrolysis problems.

Trolling Motor Mount:

Trolling Motor Mount has two slots for a hose clamp.PD-W transducer is designed for mounting on trolling motor.

The LCD Display Screen:

The LCD displays the sonar information and the displays are measured in "pixels". Pixels are the little square blocks on the screen and It will make up the image.

Advantages of using a fish finder

  • Depth finder.
  • Chart your course.
  • Save locations.
  • Water temperature.

Disadvantages of using a fish finder

  • Expensive
  • Hard to operate.
  • Need a lot of practice.

You Should Learn These Basics of Using A Fish Finder

You have to follow some steps for using a fish finder. Steps are given below:

Learn before buy:

Fish finder is a kind of expensive device. Before using it, you have to install it, know all the tiniest information’s about this. If you don't know how to interpret the reading from the fish finder device, It will be very tough for anybody to use this properly without knowing how to use. For this vary reason even the most expensive devices will not come in handy for you. For that, you need to learn things the way it should be done.

Take knowledge from manuals:

After buying a fish finder, it’s a must that you read the manual though reading manual is one of the most boring things in the earth. But in order to know details about thinks like depth, temperature, speed sensors and all other technical issues, it’s a compulsory work to read the manuals.

Installing fish finder:

You have to install this device as per the instruction. Overall, you have to mount it. You must adjust sensitivity, fish id settings, suppressor settings etc. You should also learn to operate it the device in manual mode also. And all these you can do by following instructions given in manual.

Final Word

So, it’s evident that a fish finder is a useful material for people who loves fishing. Especially professional fishermen and sporty people love to use it. So, Whoever want to start fishing with these devices these are the basics of using a fish finder and we hope this article come in handy for people who wants to use a fish finder.


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