How to Use a Fish Finder? |How to Master Using a Fish Finder

One day, an experienced angler called Kiyotaka Kayak discussed his desire to understand and know what was going on under his fishing ship with his brother.

Here is when he got the inspiration to use a fish finder to see through the body of water to find fish.

Kayak defined that inspiration from seeing an air bubble rising to the surface, which indicated that a fish of schools is moving below the boat.

That conversation inspired him to invent what is well known as a fish finder. A fish finder helps the fisherman to view a detailed description of exactly what is happening underneath his boat.

In this handy guide, I’ll tell you more about the fishfinder and how to make the most of modern fish finders.

What is a fishfinder?

A fish finder is an electrical device that utilizes ultrasonic waves originated from the waves converter to view the underwater conditions and deep water temperature on a fish finder screen.

It mostly shows an individual fish or schools of fish for catching more fish. The images were printed on a piece of paper. However, at the beginning of 1980, they generated CRT fish finder display screens and were elevated to LCD screens in the late 1980s.

The echo sounders define the distance between the underwater conditions like schools of fish or the bottom of the sea, and the result is declared on the display screen.

An ultrasonic signal is transferred through the sea movement, which measures a consistent speed at approximately 4800 feet per second.

When a sound signal hits an underwater obstacle like a fish or seabed, a part of the signal is transferred backward to reach the source.

By determining the difference between the transfer of the sound signal and the receiving of the returning signal, you can calculate the object’s depth.

Then the echo color sounder will show this reflection by employing a single coloration of 16 choices. Or by monochrome sounder showing numerous gray scaling levels, which is determined by the power of the reflected wave.


What are the two prime parts of the fish finder?

A fish finder is constructed from two parts, and the prime part is that with a display panel and the transducer.

The fish finder display panel must be positioned in a reachable place where you can easily access it in the ship cabin’s wheelhouse.

The transducer should be located through the ship’s underside or in the ship’s construction. keeping in mind that the finder’s overall performance can be hugely affected by installing it properly on the ship’s bottom.

Since the failure of detecting returned signals or serious damages can result from the improper installation of the transducer.

to prevent such obstacles, it is recommended to refer with a professional technique on the proper techniques of installing it before the actual installation.

What are the basics of the fish finder?

Commonly, most fish finders are purchased as a finder combo, which means they are sold, including the prime finder component, transducer, GPS, panoptic, Bluetooth, and more innovative 360 imaging sounder accessories.

This guide will include only the basics found to use fish finders available on the market.

Transducer of a fish finder

After the prime component, this is considered your system’s brains, employed to play the role as if it is your eyes and ears underneath the shallow water or deep water.

It is responsible for the real work in showing what surrounds your fishing ship. It starts transferring the raw data to the head component.

And the system begins to display the sensitivity information reading as a picture onto the panel. They are produced in a wide range of sizes and shapes.

Still, they carry out the same primary functions. They include some ceramic factors within the frequencies pulses, producing signals and sounds into the water column.

The reflected frequency known as ping is the power and time of the reflected waves, converted into an electrical echo for the main unit to process the time and strength of the sound navigation and ranging shown on the sounder.

The broadband sonar is referred to as Chirp factors that work in a broad range of signals, a basic 2D sounder that employs a round-shaped factor during imaging.

The depth conditions, which usually have a rectangular shape to produce higher thin signals required for imaging sonar, are likely produced in a broad range of sizes and shapes that rely on the frequencies required.

GPS and Chart plotters of a fish finder

A fish finder with a GPS feature will enable you to monitor your position and follow it on the top of your map.

Nowadays, many fish finders include an internal sensitivity reading. An external receiver can be utilized to catch your ship’s position and the direction you are heading to, even when employing a very low speed.

 An efficient GPS and fishing area map is an essential tool for a successful fishing experience. It is exceptional for navigating and discovering any fishing areas.

The GPS and the chart plotter offer you the advantage to read and locate a wonderful fishing spot.

Where many schools of fish are located and keeping records so you can return to the same spot again without getting lost.

Screens on a fish finder

They are produced in a numerous range of sizes ranging from 3.5 inches up to 16 inches. Typically, choosing the highest screen that you can afford is the best choice.

Suppose they provide the sounder characteristics you desire. The bigger the panel, the extra depth information you can read at once.

However, it will not be easy to view both the sounder screen and the chart plotter together with a 5-inch screen.

Yet you will have the best view with a 9 inch or a bigger screen. The next factor you need to consider when selecting the screen’s size is the pixel density.

Many screen units ranging in sizes between 5, 7, and 9 inches will have the same resolution.

Nowadays, most of the highest producers offer display units that provide images using 800×480 pixels in the sizes mentioned above.

Learn that every increase in the screen’s size decreases the images’ pixel density and quality.

Which results in producing images that are slightly less crisp. When viewing the screen units side by side, you can make the right decision when deciding which screen size to purchase.

Networking of a fish finder

Experienced anglers will mostly own several fish finders on their ship, typically one or two on the steering wheel.

Another one at the ship duck, where they usually cast their rods after locating a fish group by networking their fish id.

Structure scan on a fish finder

Employs a full converter that produces three different dimensional pictures of the conditions below the ship.

That explains the underwater structure, where the fish are located, and help show you find where they might be hiding.

With deploying various waves of sounder sound technology to receive an outstanding 180 degrees illustration of what is going underneath the ship.

Switch fire of a fish finder.

Switch fire is utilized to clear out any noises from the sounder’s images to offer cleaner viewing of the fish, conditions, or the bottom of the lake.

It enables you to add to remove any extra details from an image to calculate the depth, temperature, and turbulence below.

It enables a better viewing in tough conditions of fishing.

Dual-beam of a fish finder

Dual-beam employs two alternatives of sounder waves to combine huge data and cover large areas.

This technology mix high and low rate signal beams to show greater raw data for wide, medium, and low rate signals for providing fewer data and information about a wider area frequency.

You can select two alternatives of beams to obtain information from both at one time.

Chirp on a fish finder

Chirp alleviated the compression of a high intense radar pulse, enabling the sounder to penetrate the deep beneath the ship with excellent efficiency.

The chirp is different than the traditional sounder, where it provides multiple waves with different rate signals to help the angler to get more accurate and detailed images.

What is the best fish finder frequency?

We must understand the fundamentals of the alternative frequencies function before we talk about the chirp’s capabilities and the different types of imaging.

Employing torrents of multiple frequencies, and main units with chirps technologies compensate the inefficiencies in multiple objects and materials return to the sounder pulse, by utilizing different frequencies, the objects will show better or worse.

That is why CHIRP devices can get details for more images. while offering you the clarity to visualize the individual fish id in a school or differentiate between a small size school of a big size of big fish.

How to use a fish finder?

The transducer is positioned underneath the water and produces high frequencies of ultrasonic waves downwards.

When they are heading down, they face obstacles like branches, arch, clutter, or even a school of fish. When the wave hits that obstacle, they return a signal received by them.

The sonar’s software turns these reflected signals into an image and shows it on the screen. Depending on the reflected signals, the software then concludes whether it is a fish or a solid obstacle.

How to install your fish finder properly?

Suppose you installed your finder in the wrong mode. In that case, you will not be able to get efficient.

And clean images from your sounder, and you often find that the fishfinder is operating against what you desire and limit your visuality of the fish.

Many anglers install their sounder on their own or depend on other people to carry this job for them. By doing so, you will not fully understand its importance and how to carry that properly.

To ensure that the finder technology is installed properly and adjust for a successful fishing experience. To catch more fish with lighter bait and have the best overall performance, please follow the available tips below.

1-Sign up your fish finder

Before you proceed with doing anything, directly after taking your sonar out of the box, enter the manufacturer’s website, and enroll the product’s model.

 And ensure that they feature a valid email address to reach you, activate your guarantee, and provide them with a method to provide you with any new updates or important alerts.

2-Update the software

Nowadays, the technology utilized in manufacturing fish finders is superior to a motorized unit, like other computerized gadgets such as computers, electronics, and smartphones.

These are constantly changing and need to be updated more frequently to enhance overall performance and be compatible with other products.

Consider it like a smartphone or a computer that needs frequent updating for the included software and applications.

Aquatic integrated technology functions in the same model, and they are gadgets that are not regularly connected to the internet to provide you with reminders to perform these essential updates.

So, you can employ the reminders on these electronics to carry out the update at the specified time.

You need to check that the software and ensure that the software is updated with any other electronics. that you will install before you begin with your fish finder’s installation steps.

And most likely, any new product of finders will require updating to ensure the gadget’s longevity. The procedure for updating the software is effortless. It downloads the software update to an SD card.

Inserts the card into the main unit, and turns it on, which automatically starts the installation. Before this step, you ought to restore the unit to its default setting provided by the factory.

And its settings and GPS are synchronized with the SD to save the information uploaded on it.

It ensures that the newest software version’s operation will enhance the performance and compatibility and provide you with a clean and clear image on the display screen.

3-Check the importance and inference of the power in the fish finder

Ensure a fuse between the unit and the source of power to provide an efficient and clean power source to the sounder component.

The fuse’s importance is clear; however, many people miss that step, which offers a risk on the protection of the main component. However, there are various methods to carry this out depending on the power source’s installation.

It is recommended to use the most straightforward method to connect it by a wire to the battery.

Which is the waterproof inline fuse. After that, you must ensure that an efficient source of clean power provides enough power.

After years of operating numerous aquatic technologies, the power source interference mostly causes the problems we face as trolling motors. Such as the following.

Do not operate your fishfinder on the same power source you employ for your sounder item, especially when running a 12V trolling motor.

Placing any trolling motor wire close to the converter’s power source or the fishfinder often results in a problem.

4-Transom mounting board in a fish finder

The settings of the signal converter are vital for all fish finders. Yet, it is even more essential when employing a side imaging or down imaging sounder.

You would be in serious trouble if you installed a transom mount board without having a mounting board already installed on your boats.

If you paid an expert electronic dealer to install your fish finder and do not provide a mounting board, it is then that electronic in an incompetent installer.

The mounting board is installed employing two screws on the ship’s transom, and finally, these will be the last two holes you will be drilling inboard the transom board of your ship.

Installing this on your ship will ensure longevity and provide you with a clean and clear image of the conditions below your fishing ship.

And if you ever needed to change your converter position, you will place it directly on the mounting board without any extra holes preventing any extra holes or damages to the ship.

5-Check the location and angle of the signal converter

The correct installation of the location and the angle will provide the means to see images, arcs, and viewing what is on the screen with high accuracy.

The setting of the position and the transducer’s angle is the foremost crucial step in ensuring you receive the ultimate overall performance from your gadget.

There is no one ideal method to accomplish that step since that every ship varies from another.

So will introduce some top tips for the common types of transducer available on the market that features 2D, down, or side imaging.

It should be positioned near the engine on the transom monitoring board in the ship’s centerline.

However, it is better not to be so close as it will constantly be affected by the surrounding cavities.

The transom placement should help you view both sides of the ship without any blocking, such as floatation pods, anchors, or outboard motors.

It needs to be always in contact with the water. Putting it up or down even for one inch and placing it in the water can result in a huge difference.

It may require multiple readjusting to reach the water’s closest level, putting in mind that the bottom of the ship sits lower in the water when loaded with people than at the vendor.

To require the best overall performance from your fishfinder equipment, such as sounder, it would help ensure you adjust it properly.

However, if you already have an installed finder. Yet you are not receiving the highest quality of images on your display screen. It is best to check and search for the issue that causes the lack of performance.

What are the three types of tomography on the fish finder screen?

Side tomography.

This image utilizes an extra slim ray of a stream to zoom in and visualize a 180 degrees area that contains up to 240 feet on the right and the left of your ship, which is calculated to result in 480 feet total.

The images provided from each angle of the area are concluded to the immediate data captured after.

Before constructing the total viewing of the bottom, you can mark the location by employing the abilities of the finder’s GPS.

Down tomography

It utilizes high-frequency sound signals produced in a very slim slice. The waves received by the sounder from these signals are employed to create two feature images of the conditions below the ship.

360 tomography

They help the angler select from five rays speed to adjust the zoom and quality of the image and update the level of their demands according to the speed of their boat by creating a 300-foot circle of the detectable area around the boat, by turning a slim wall of the sounder around 360 degrees.

One of the foremost essential basics for anglers is to know how to read a fishfinder? Not it is alt of technologies to grasp.

 However, it is such a shame that someone spends thousands of dollars on something he cannot use. Let me take you through step by step to make you understand the whole idea behind that.

How does fish show on a finder?

2D sonar interpretation

Modern sounder deploys a shaft-shaped light to read the water column. The cone angle depends on the number of rare occurrences.

For instance, a 2oo KHZ has a thicker shaft than 83KHz, and offers a wider area coverage, while 83KHz has more advanced data.

The fishfinder keeps on beeping and receiving, then transmits the received data onto the screen. The most recent data are found on the left of the screen, and the previous data are found on the left.

If you have been sitting still at the same spot for a longer time,  the seabed will appear the same. If a big fish have swum through the cone shaft accidentally, it will automatically appear on the screen.

Then the arch forms due to the distance to the fish are longer than in the middle. Now consider you are idling over a reef with a brush on the perimeters and clutter on top. As you force up the slope,

The intensity at the display screen adjustments in conjunction with it. The brush can seem like a multitude of fish or blobs on the display screen. You will typically see the brush linked to the bottom, which tells you it is now no longer fish.

Depending on your color palette, the tough backside could have a shiny yellow color return, with a thicker blue band underneath it.

As you pass beyond the tough backside to a mucky backside, the yellow-blue returns will fade into an orange color.

  Fish can seem like spherical marks, fish arch, or clouds if they may be baitfish. Larger fish may have a stable coloration within the middle because a huge fish has a stable mass to go back to a sturdy signal.

Down Images sounder Interpretation

The most popular questions are asked about the appearance of the fish on the down sonar screen.

Since they differ a lot from most modern 2D sounder, that is the most familiar to many anglers.

The fish appear to be smaller than on the 2D since the down scan is a thin slice of the water column. For instance, crappie will appear to be smaller than oval, arches, or circles.

 They are generally stacked on each other around weed beds in each school. Schools of fish bass will be spread out onto the bottom of the sea and look a little larger.

Hard bottom interpretation

The hard bottom is very simple and straightforward to view on the tomography viewing. Relying on the color pallets,

Featuring a little bright colors for the hard bottom than the soft bottom. And will offer a darker coloration beneath that soft bottom.

You can notice the change in the coloration when transmitting from a soft to a hard bottom.

Side tomography interpretation.

Since this uses the beams to look at the side and not directly on the top, it cannot locate the big fish or smaller fish underneath the boat.

You will receive brighter images and shadows of the fish on your cone sounder, which will cause a difficult locating of the fish.

FAQ About Using a Fish Finder?

What are the types of fish finders?

There are three types of fish finders available on the market. Here are the top reasons to choose one that serves all your needs.

Standalone fish finder

They are designed for use on a small ship that you utilize for limited fishing in small lake areas and a specific budget.

They offer the highest screen display with the ultimate, utmost performance for the lowest cost.

However, if your center room has a different place for multiple displays or if you purchased a brand new GPS, you could usually add it to multiple units later.

Chartplotter fish finder

They combine units that are more suitable for medium-sized boat owners. They employ GPS for navigating the bottom of the fishing grounds and displaying on a split-screen. And by installing a transducer, you can turn a Chartplotter into a combo unit.

Fully networked system

 Fully networked systems are on the market from all the foremost suppliers. Sometimes they can provide an outstanding range of sensitive data readings and locators, GPS charts.

Several enable Bluetooth/Wi-Fi, and you will be able to manage them from your iPhone or Android smartphone.

Your fishfinder, usually an external “black box” module, is simply one amongst } these data sources.

Multiple-display network systems are nice for medium-sized or large vessels. Capabilities get additional wonderful every year.

What is the best beam angle for a sonar transducer?

A ceramic transducer is responsible for the frequency sent and the following beam sound signal.

In any mode, in which manner does the sound signal leave the sonar? The ceramic that bonds to the transducer is commonly semi-circled and connected on factors with a material that is electrically conductive.

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