The principle of operation of the fishfinder

The sounder is a specialized device designed to determine the structure and topography of the bottom, the depth of the reservoir. With the help of the sounder you can see a variety of underwater objects, so the sounder is in great demand among fishermen.

The device and the principle of operation of the sounder
The design of any sounder includes several basic units:

- receiver;
- transmitter;
- converter;
- display.

Before choosing a suitable device, you need to understand the principle on which it operates. Unlike the camera, the sounder does not immediately give underwater space in the form of a picture. Using the measurements provided by the sensors, the sounder displays an image by building vertical columns.

The sounder usually consists of two functional parts:

- Body equipped with a screen.
- Sensor-emitter, which is fixed at the end of the boat and connected to the body by cable.
The sensor sends high-frequency signals that reflect from underwater objects, transmit data about the environment. The properties of the object affect the strength of the reflected signal, so using the sounder you can distinguish underwater terrain, snags, fish.

How to choose a sounder?

The key to successful fishing is the acquisition of a suitable sonar. The most important parameter of the device that affects the quality of its operation is the power of the transmitter. The minimum power, even when using the device at shallow depths, should reach 600 watts. The use of a sonar with a powerful transmitter will allow you to fix objects located at great depths, with high accuracy.

The clarity of the resulting image is directly related to the characteristics of the screen and the resolution parameter. The simplest models can be equipped with a black and white display, more expensive-a color LCD screen.

You can choose both a single-beam sounder and a depth sounder that allows you to play a three-dimensional image. Most models can be used only in warm weather, but there are also special devices designed for winter fishing. Any sounders have temperature and speed sensors.

Types of sounders
Depending on the functions performed, several types of sounders can be identified:

- Sounders equipped with a small screen are designed for an overview scan of the bottom. The device has a small radiation angle. The sounder works well under conditions that the boat is in a fixed position, allowing professional fishermen to accurately determine the right place for fishing. Inexperienced anglers will approach fish finder with a lot of features for finding fish.
- Multi-functional sonar, allowing you to accurately scan the water space, have a high cost, turning ordinary fishing into an exciting interesting activity for a detailed study of the characteristics of the reservoir and the objects present.
Among the wide range of sonar is not difficult to choose a good model. In order for the sounder to really benefit, you should carefully understand the principle of the device and set the necessary settings.