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How to make elektronno why

How to make elektronno why

Multifeed 75 + 80 + 90 A very popular bunch of satellites are the ABS 1 satellites which are located at 75 degrees east longitude , the Express A2 satellite which stands at 80 degrees and the Yamal-201 satellite which is installed at a point 90 degrees east. Taking the signal from these satellites, you can get access to a large number of free TV channels, thereby watching most of the channels that are in the packages of paid operators, for free.

To receive TV channels from three satellites at once, you need to install three satellite antennas or create a multifid that can receive a signal from these satellites on one antenna, how to make a multifid that can receive a signal from satellites in 75E, 80E and 90E positions on a satellite antenna 0.9 meters and will be discussed further.

Multifeed is a device with which you can receive a signal from several satellites at once.

This can be achieved by: - installation of several satellite dishes that are connected to one tuner; - installation of several converters on one antenna; - installation of several "plates" with several converters.

The DiSEqC Switch device is used in any case. It is of two types:


2 in 1 out, having 2 inputs and one output, and 4 in 1 out - 4 inputs and 1 output, respectively.

The wiring diagram is as follows:


When the satellites you are interested in are quite close and some of them have a signal level margin, you can configure the multifeed with the help of several converters installed on one "plate". At the same time, the antenna itself is oriented towards the weakest satellite signal and, thus, “equilibrium” is achieved.

The most ideal and, accordingly, expensive way is to install several “plates”, each having a separate converter. This option is suitable when you need to receive a signal from satellites distant from each other.

Using conventional LNBR, the signal received from side satellites is quite significantly attenuated. For maximum amplification of side signals, it is best to use converters that contain a fairly wide separate feed. The feed itself can be represented for greater understanding in the form of a horn that receives a signal and collects it into a converter.

This is how the received signal from 3 satellites to which you tune the antenna will look like:


But in addition to these 3x there are others located in the neighborhood and the picture of the received signal may have the following form:


Most often, neighboring satellites do not have the same or even close frequencies in the same polarization, and in different polarizations this happens quite often.

Therefore, the angle of inclination of the side converters should be even clearer, because if they are not positioned correctly on one converter, signals from two satellites will be received, which greatly affects their quality.

If you use regular LNBF, then you should know that higher level signals are being received at the side converters. The satellites are located at different heights, so the converter should also be installed accordingly - the higher the signal source, the lower the converter should be.


So, the next important stage is the installation of the tuner. It is carried out differently for individual species, but your main actions should be as follows: - in the settings enable the use of DiSEqC; - Specify the converter number when scanning channels (thus, switching channels, you can turn on the corresponding converter).

How to attach an additional converter?

In order to add 1-2 additional converters to the main one, you can purchase an industrial fastener of a multifid. If you need a larger number, you will need to make the mount yourself. So, for example:



Or the design may have the following form:


Multifeed 75 85 90 photos


If it is difficult for you to calculate all the necessary data for the installation of a multi-fee by yourself, then you can use a special online calculator.

The program Satellite Antenna Alignment will allow you to clearly determine the azimuths, the angles of inclination of the multi-head to receive a signal from certain satellites.

To better understand the whole mechanism of reception of the signal, familiarize yourself with the scheme of the incidence of rays on the antenna from the satellite:


The scheme of rotation of the head, (rear view), suspended in 2 different directions:


In general, if you wish, you can connect up to 10 satellite heads, for this you can use: DiSEqC switch 4.8, 10 ports; H / V switch (horizontal / vertical); satellite switch 0 / 12v; different combinations of multiple switches.

So, now we will analyze how to make multifid to the satellites ABS1 75E, Intlesat 15 85.2E and satellite Yamal 201 90E, using the antenna with a diameter of 0.9-1.2 meters.

You will need: Offset satellite antenna with a diameter of 0.9-1.2 m; Receiver; 3 Ku Band Converters; Multifed mount for fixing additional two converters; DiSEqC device or in common "diske" on 4 inputs and 1 output. Cable and 8 F-connectors.

In the ability implemented by the multifeed to adjust the position of the converter in different planes there is a significant plus - for the largest signal, almost negligible adjustment is required, which is most relevant when “catching” a satellite with a weak signal.



You need to focus on the Intlesat 15 85.2E antenna, after you achieve a normal level of communication, scrolling around the converter axis, go to the Yamal 201 90E setting. To calculate the settings for your city is better to use the program. Usually, tuning to this satellite is easy, but the ABS1 75E can show off. If you use a tuner for tuning, then you need to set either a global or 10600 LNB type. When you stop the selection on the latter, you need to enable 22KHZ.

It is recommended to configure this satellite on 12579, V, 22000 and do not forget to scroll the converter around its axis!

The next step is to connect each converter to the “Diske” port, the outgoing port of which will already transmit a signal to the receiver.

After that, you need to scan transponders and you can enjoy watching TV channels!

This inexpensive kit will help you to confidently receive signals immediately from 3 satellites, the cost of its manufacture independently is about 3,000 rubles.

The Intlesat 15 85.2E satellite covers the whole of Europe and Russia, which is used by such major providers as Rainbow-Internet, Continent TV, Connecto - Radio provider. Here is a map of its coverage:


The ABS1 75E satellite has a coverage covering Russia, Central Europe, the CIS, China, Africa, Australia, the Middle East and Southeast Asia. Providers: Rainbow TV and GTSS.


Yamal 201 90E covers the whole of Russia, partly - Asia and Europe. It is broadcast on both the Ku- and the C-band. Providers: Rainbow Internet, GSS Gazprom Space Systems, gxsat.


If it is difficult for you to calculate all the necessary data for the installation of a multi-fee by yourself, then you can use a special online calculator.

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