Satellite dish. What it happens and whether it is worth doing a homemade antenna

Benefits, which brings to the owner a satellite dish, have led to the great popularity of satellite television. After all, thanks to the broadest choice of channels, you can not only get access to a huge number of films, favorite sports and cultural programs, but also be aware of all important events, tighten your knowledge of a foreign language, that is, combine pleasant pastime with useful self-education. And if you add even more excellent image and sound quality, it becomes clear why a satellite dish causes such interest among those who only think about which TV set in a new apartment or who is tired of constant interference when receiving a signal.

How does a satellite dish work?

The principle of operation of all plates is approximately the same. First, the signal hits the mirror surface of the satellite dish. Then it is reflected and sent to the converter, which in turn gets to the receiver, and from it goes directly to the TV itself.

A satellite dish can be one of two types: offset or direct focus. Offset antenna is not exactly directed to the satellite, but just below it, because the signal that is reflected from its surface gets into the converter at a certain angle. This kind of receiving device is fixed almost vertically, which avoids the accumulation of precipitation, which greatly worsens reception quality. This kind of antenna is most often seen at the windows of apartment buildings, as it is convenient to install along the walls. The optimal size of this dish is 1.5-1.8 m.

In a direct focus device, a portion of the mirror surface is closed by a converter, however, as the diagonal increases, this becomes barely noticeable. Quality of reception directly depends on the size. Good characteristics start from 1.5 m. With such a tray size, the irradiator no longer "obscures" the surface of the mirror. This type of antenna is used for professional reception.

It should be noted that the satellite dish is very "picky" to the terrain. Any interference to the signal, whether it be a tree or a wall, can completely or partially "hammer in the reception." Therefore, before a possible purchase, you need to check whether there is interference from the intended installation site to the selected satellite.

Satellite dish with your hands. Is it worth it to try?

If you type in Google's "homemade satellite dish", the Internet will produce the most bizarre pictures with images of such amazing designs that sometimes admire the boundless imagination of a person. Here and beer cans, and umbrellas, and steel wire frames , and cut galvanized sheets , etc. Will any of this work? Maybe. However, it is unlikely that this design will be able to compare with a conventional dish, which can easily be purchased at any specialized store. Considering the fact that the average price of satellite dishes is rather democratic, there is no need to waste time on the construction of a dubious design, except, perhaps, if the person is an inventor or has a profound knowledge in this area.