Wireless echo sounder for fishing entered the fishing practice relatively recently. In comparison with the echo sounders of the traditional equipment and the traditional method of signal transmission by cable. Although many principles of operation in all types of echo sounders are completely identical. The difference is only in the way the signal is transmitted from the transducer to the main unit. In the wireless sounder, the signal from the sensor goes to the main unit with a radio signal, and in classical echo sounders the signal goes through the cable.
How is the wireless fish finder for fishing
There are two different blocks. The first block contains a sensor that scans the bottom. The batteries are also in this unit. In addition, there is a converter that converts the echolocation signals coming from the sensor into radio waves. Radio waves are fed to the central unit, converted and displayed as images.
The central unit has autonomous power supply due to small accumulators. Inside the central unit is a receiver of radio signals from the sensor and a processor that converts these signals into a visible image on the display.
The unit with the sensor is enclosed in a sealed housing and has a reliable fastening for the cord. The sensor unit is made in such a way that it is always on the surface and has positive buoyancy.
The sensor unit is thrown into the water by means of a rod. It should be understood that the block has a significant weight, so the rod should have an appropriate test. Some models of wireless echo sounders have a special bracket – a holder for the echo sounder, which is attached to the rod form.
But there are models in which this fastening is not. I must say that it is more convenient with the fastener. The fishers simultaneously move the sonar sensor over the surface of the water, rotating the coil handle, and looks at the readings and the image that appears on the fish finder display.
Some wireless echo sounders for fishing are equipped with a system that automatically turns on the sensor as soon as it enters the water. Although in most models the sensor is switched on in manual mode.
Some models of wireless echo sounders have an additional antenna, which amplifies the signal and improves its quality. This makes it possible to increase the range at which signals can be transmitted between the sensor and the main unit.
It should be borne in mind that it is somewhat problematic to do casting with a reinforcing antenna, and it is mainly used if the sensor is installed to the boat for feeding. This is more typical of carp fishing.
Virtually all wireless type echo sounders have only one beam of scanning. And the viewing angle can vary from 45 to 90 degrees depending on the model of the device.
How to apply wireless sounder for fishing
How are wireless echo sounder used for fishing? The wireless sounder can be used both from the shore and from the boat. The block with the sensor is attached to the fishing line or cord on the fishing rod. After that the sensor is thrown into the water.
On the screen of the fish finder display, which is on the shore, a picture appears that reflects the condition of the bottom, the depth, the presence of fish. But often the function of showing fish is very conditional. Not always the sensor is able to identify the fish, so it does not make sense to flatter it.
In addition to all this, the depth sounder delivers the temperature of the water and draws a bottom line. By the color of the bottom line, it is possible to read the bottom with a high degree of probability for the density of the soil.
It should be understood that a normal picture showing depth differences can only be output when the sensor is moving on the surface of the water. If the floating sensor is stopped, then the bottom will be displayed as a straight line.
Therefore, after casting, the fisherman starts to turn the handle a little, scanning the scan results on the screen. Having found out a condition of one site, it is possible to do casting under other angle. And gradually, very quickly, you can determine the state of the bottom relief in the area where you have to catch.
In order to know the required distance for catching the bottom with the wireless sounder, it is rational to count the turns of the coil handle, as it is done, for example, in feeder fishing. Thus, you can determine the distance to the nearest meter. For example, to the submarine or pit on the bottom of the reservoir. Then transfer this distance to the working rod.
When fishing from a boat using a wireless sounder, the sensor cannot be thrown into the water, but sent downstream if there is one in the pond. You can also use the wind current, which will cause the sensor to drift.
This method of bottom exploration is rational to apply, if the depth is not very large and there is the risk of frightening the standing fish by the boat. If the depth is normal (more than 2 meters), you can use a sensor that will be next to the boat, tied to it. And just swim and watch the readings on the echo sounder display.
Wireless echo sounders for fishing can also be used in winter. The floating sensor simply drops into the hole. Although the use of such echo sounders is not recommended in severe frosts.
Some disadvantages of wireless echo sounder
All wireless series echo sounders have a limited range. Most manufacturers declare their numbers, but you need to give an account that none of these figures is the same as the actual range of the transmitter. It is always somewhat less. Actually, you can check the condition of the bottom at a distance of 35-40 meters, and sometimes less.
Although the presence of an additional antenna can give the opportunity to work at longer distances. Although much depends on how well the batteries are charged. As soon as the charge begins to fall, the scan distance also decreases.
In addition, in windy weather, the sensor starts to jump on the waves, and it is not always possible to get the right picture of the bottom. On the waves, the beam begins to walk from side to side, so distortions are obtained. In addition, the quality of the picture is affected by the presence of radio interference.
The sensor does not have the best aerodynamics, so it’s not always possible to throw it at long distances, especially in windy weather.