Fish finders are really useful devices that use sonar to locate the fish under the water and as a result they increase the fisherman's chances of catching fish. There are a variety of different types of fish finders on the market today, so regardless of the type of fish you are wanting to catch, a fish finder can be a great help.
Fish finders have two basic types of screens. The first type of screen is called the Cathode Ray Tube (CRT) and the second is called a Liquid Crystal Display (LCD). CRTs are not as popular since the invention of the LCD screens. This is because LCD screens are more capable of displaying high resolutions. If you find a screen labeled as a TFT screen, it is simply another version of the LCD screens.
For the recreational fisherman the CRT screen is the wisest option. It's less expensive than an LCD unit, provides very good clarity and is easy to read in direct sunlight.
Another thing you need to consider when searching for a fish finder is your budget; you do not want to get your heart set on something that is out of your price range. The best way to approach this is to search for those finders that are within your possible price range and ignore the rest.
When you are working out your budget, remember that a colored screen will cost more than a non-colored screen. It is usually the case that a more regular fisherman will be willing to spend more on a fish finder than the occasional fisherman.
Another technical consideration of the fish finder is the frequency it uses. Kilohertz (kHz) is the measurement used with frequency and is used in the water to locate the exact position of the fish and where the best place to cast a line will be.
The screen on the finder is not able to identify the species of fish available, just where groups of fish are located, so it is important to know the depth. The best kHz is between 80 and 125 kHz, because the higher the frequency, the narrower the signal range cone is and the greater the detail available to you.
One more important factor to consider is the inclusion of a global positioning system. GPS fish finders are fantastic to use when you are off on a weekend trip and you don't know the area very well. They allow you to record any position in the system, which means you will be able to find it again any time you want, without any issues.
Whether you select a regular fish finder or one with GPS, it will prove to be a fantastic addition to your other fishing equipment. Just imagine how many more fish you will be able to catch with a great fish finder and how easily you can get back to that ideal spot if you have to leave for any reason.
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