The images and sounds received by the TV are transmitted by radio waves. During the spread of radio waves, the TV receiving signal is weak if it is blocked by tall objects. In order to prevent tall objects from blocking the radio waves, the TV launch antenna is generally more outdoors.

Pay attention to lightning protection

The images and sounds received by the TV are transmitted by radio waves, and radio waves are launching by antenna. The radio waves used for TV shows can only be transmitted in line.

During the spread of radio waves, if the middle is blocked by tall objects, the TV receiving antenna will not be able to connect the TV show in the distance. In order to prevent tall objects from blocking radio waves, the TV launch antenna is generally hundreds of meters high.

In fact, receiving antennas is generally a relatively high place for outdoor, the reason is the same as what they just said. Therefore, the higher the receiving antenna, the wider the source of the TV signal received, the more programs you see. However, after receiving the height of the antenna, it must be lightning protection.

Pay attention to performance

The antenna is an indispensable part of wireless communication, and its basic function is radiation and receiving radio waves. The function is to transmit the electromagnetic wave from the TV station to the signal voltage to the LNB.

The working principle of the TV antenna is that the electromagnetic waves are advancing forward. When it comes to the metal antenna, it is equivalent to cutting the magnetic wire of the wire, so the electromotive force is generated. This is the signal voltage.

As an important part of the communication system, the performance of its performance directly affects the indicators of the communication system. Users must first pay attention to their performance when choosing an antenna.

Pay attention to gain

One of the main indicators of antennas is the product of the direction coefficient and efficiency, and it is a manifestation of antenna radiation or receiving radio wave size. The choice of gain depends on the requirements of the system design on the area of radio wave coverage. In short, under the same conditions, the higher the gain, the farther the distance between the radio wave transmission. antenna.