If you decide to choose a good satellite dish for yourself, then pay attention to the main parameters that will directly affect the quality of the received signal, which means that they will either justify or not justify the funds invested in the antenna. To choose a good quality antenna, follow the simple guidelines given in this manual.
Instructions
Step 1
First of all, determine in which satellite receiving system the antenna will work. Before choosing an antenna, answer a few questions: which channels are you interested in; is it possible to position the antenna so that the satellite signal is not blocked by foreign objects; you want to watch one satellite or several; how much are you willing to spend on an antenna.
Step 2
Select the size of the future antenna. The diameter of your antenna will depend on the strength of the received signal. That is, choose the antenna diameter depending on the geographic area in which you are located. It is best to contact the company whose services you want to use and find out what antenna diameter is needed to receive a signal in your area. Below are the approximate ratios of signal power and antenna diameter.
Power (dbW) 53 - diameter (m) - 0, 6
48 - oh, 8
45 – 1, 1
42 – 1, 5
40 – 1, 8
Step 3
Choose the shape of the future antenna. Antennas are offset and direct focus.
Rectangular - this is an ordinary cymbal, the converter of which is attached in its center with the help of knitting needles. In winter, ice can freeze on the mirror of such an antenna and snow can fall, this will greatly impair the quality of signal reception.
Offset antennas are antennas that have their focus downward from the mirror, so they can be easily cleaned.
Step 4
Choose the correct antenna suspension type. An azimuth suspension is one on which the antenna is rigidly fixed, with this suspension the antenna is tuned to a single satellite. Polar is more expensive and provides for tuning to several satellites.
Step 5
Select the material from which the antenna will be made. The most popular material is aluminum, it is light and cheap, but soft, it is easy to damage it and the deformation of such antennas has a very bad effect on the quality of signal reception.
Steel antennas are stronger and cheaper, but they are heavy and prone to corrosion, so when choosing such an antenna, pay attention to the quality of its color.
Plastic - very light, but snow adheres quickly to such.
Mesh ones are light and comfortable, they are almost invisible and they do not spoil the landscape, but the quality of signal reception leaves much to be desired.
Step 6
In the event that you are choosing an antenna for a car, then it is better to give preference to a passive television antenna, it is better to install it on the roof or in the wing. Choose the right antennas and enjoy good picture quality.
