What is Fish Finder and How Does a Fish Finder Work?

This year like many of the years before it, fishing enthusiasts will swarm to lakes, ponds, and rivers even the ocean to try to catch the big ones. The problem is that sometimes it takes more than having the right lure to find your fish. That is when a fish finder comes in handy. This article will discuss some main topics you need to know about fish finders. First, what is it, next what are its uses and lastly how does a fish finder work?

A fish finder simply is an electronic device used for finding the largest quantities of fish. Were you expecting something else? Now there are many different types of fish finders with different features but for the most part that is the main job that they all accomplish.

Now that we have discussed what a fish finder is let us talk about what are some of its uses. You already know that it is used to locate fish, but you can use it for so much more. It can be used as a depth finder too. You can experience all the fun under water. Take for example if you were to go deep sea fishing on Florida charter boats or something. You would not have to worry about the possibility of wasting your money on the trip by not catching any fish but you could confident that with your fish finder your fishing success is guaranteed.

How Does A Fish Finder Work

How fish finder work

Fish finders are a great tool to detect the right spot when you are out of the water. Commercial it mainly consist of two parts; a unit with a display that you keep with you on the surface and a transducer which is connected to the main unit and is mounted. We can relate transducer as the ears of your fish finder while the display is like your third eye to locate fish underwater.

In a generalized sense, a fish finder is a sonar tool which produces a sound wave by the transducer and sent through the water. The sound wave transmits deeper into the water till it encounters anything. It originally starts with a narrow beam and gradually spreads wider like a pyramid shape. The beam is sent back to the fishfinder once it encounters something in the water, a fish for example. Then it will automatically measure the distance between the fish and you in a very small amount of time. The beam received by the device which translates the information into sizes, shapes & compositions to your screen. Thus leaving you with detailed info on where and how deep the fish is. The sound wave reaches the bottom if it doesn’t encounter with any object. And if there is just mud & weeds in the bottom, that softness will absorb the signal. But a rock bottom will reflect a more solid signal back.

The transmitted frequency and its power of the pulse are subjected to detect the exact extent. The display shows the amplified signal. The distance can be determined by knowing the speed of the wave in the water. Which are typically 4921 ft/s (1500 m/s) in sea water and 4800 ft/s (1463 m/s) in freshwater valued by the commercial fish finders. And the process can be repeated up to 40x per second. This fathometer function eventually produced the sporting use of fish finding.

The device mainly uses sonar technology that is developed during the Second World War to show what is beneath of the boat. They also took some inspiration from Fathometers which are used by the marine vessels to figure out the depth of the water & the potential hazards below for safe navigation.

Early sporting Fathometer for recreational boating did nothing to display the trend of the bottom depth over neither time nor anything about bottom structure. At the edge of a circle, they used a rotating light. They functioned strictly in a snapshot mode, as do the low-priced digital fathometer of these days.

Eventually, the fish finder was born when CRT’s were married with fathometer for commercial fishing. With the advent of large LCD displays, the high power requirements of a CRT gave way to the LCD in the early 1990’s. Today, the permanent record of the big ship navigational fathometer, available in high-end units can store the records and use a ubiquitous computer is absent in sporting fishfinders only.

Nowadays fishfinders are becoming very affordable and as such an essential part of any fisherman’s tackle with advances in factory operations and the technology. Most units just attach the Fish symbol to every echo which is not connected to the bottom surface and displays the readings as spikes on a graph. Where flat areas represent the sea bed and spikes represent objects (fish, rocks, or possibly anything solid somewhere in the water). Some advanced units have more sensitive transducers that can pick up signals and display little fish icons on your screen. They can differentiate between fish and other objects by measuring how the sonar waves bounce off of the contours of the fish’s body.

You can also use the awesome tool for shallow water navigation. The growing popularity of kayak fishing has led people using them on canoes and kayaks. A fish finder will not guarantee you catch fish but it will make the day easier, safer and more interesting and of course a huge barbeque!!

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