Fish finders are new-entry devices to the fishing world. Their main role is to help you find the best spots for fishing. Generally, these devices function using an advanced sonar technology. That is why buying one can be a tricky matter, as the latest developments in technology have turned these small devices into extremely complicated instruments. If you are looking for a portable fish finder, here are some basic features that the device should include so that you can rely on it, no matter where you find yourself or what is the type of fishing you are engaged in.
The piece of equipment through which a fish finder emits and picks up a signal is the transducer. This usually comes with the main device and you must install it so that the fish finder works. However, as they are not built-in, and they greatly influence how your fish finder functions, you can upgrade them, in case you need to improve the efficiency of your unit.
Figure out if you’re buying a low or high frequency fish finder. As a general rule, the higher the frequency, the more detailed the picture your device receives will be. As such, if you want a high-quality picture of the bottom of the water, you must acquire a product that will be able to provide you with such an image. Just to give you a better idea on how accurate an image can be, a fish finder that works on a frequency higher than 455 kHz can deliver images so clear that you can identify the shape of plants or the contour of other objects in the water.
However, to be able to receive a clear image from under the water, you need a good quality screen. When you’re looking for a fish finder, remember to check the size of the screen and its resolution – both features playing a key role in establishing the usefulness of your device. A larger screen will naturally offer you a larger image. The resolution will indicate how detailed the images the fish finder receives are. To receive great quality pictures, you shouldn’t settle for anything with a lower than 240(v) x 160(h) pixels resolution.
As these instruments are mostly used near water, don’t forget to check if your device is built with waterproof materials – something that should be stipulated in the technical details of the product. In addition, you should opt for a unit that floats. If it so happens that you drop it into the sea, you may want to be able to retrieve it, as they are quite expensive tools.