Little theory: satellite dish is often called

Little theory: satellite dish is often called "mirror", and it is a very precise definition, because the electromagnetic waves coming from the satellites fall converter, reflecting ericsson mini link from the surface of the antenna just like a mirror. In this sense, for satellite systems is applicable "law of reflection of light", namely the angle of reflection equals the angle of incidence.
The upper image shows that the signals from different satellites entering at different angles. What does this mean? That reflecting from the surface of the antenna signals from these satellites to focus at different points. And if these "points" put converters, ericsson mini link the satellite system without rotation of the antenna can be accepted by all those satellites. That signal coming from the satellite, located in geostationary orbit, the right (west) focuses the left of the main focal axis (looking behind the antenna). And vice versa - a signal coming from the satellite to the left (east) focuses on the right of the main focal axis. The situation is similar with elevation: for satellites, which is higher orbit, the converter of multifeed plate will be nanisko and vice versa. Here it is very visible:
Multifeed plate is bent backwards to geostationary orbit. Ie the right of the image converter ericsson mini link (located ericsson mini link highest) is set to the satellite that the geostationary orbit is located at the west and the lowest of predefined satellites. How is the situation of each converter, so that it is possible to adopt several satellites? The distance (A) of the converters in multi-feed, both horizontal and vertical, can be accurately calculated proceeding from the fact that the angle of reflection equals the angle of incidence: A = F * sin | a |, where F - distance from the central converter to the center of the offset (only for clarification: in parabolic antennas are taking the focal length), ericsson mini link | a | - module of the difference in azimuth or elevation. Distance - this is the distance between the centers of irradiators of converters.
Under the "center offset" is not given itself the center of a plate. This point is slightly lower than the center of the plate. And how low - it depends on the specific model of the antenna. The center can not be established if the holder of the main converter ericsson mini link (or more preferably in a single holder) placed lazerche ericsson mini link which will show exactly the required point. ericsson mini link
HotBird 13E Elevation = 39.6 Azimuth = 195 Sirius 4.8E - Central companion Elevation = 37.3 Azimuth = 206 Amos 4W Elevation = 33.5 Azimuth = 217.3 F = 45cm (in any case) Difference in height (| a |) : | Elevation (5E) - Elevation (4W) | = 3.8 -> sin (3.8) * 45 = 2.98 cm | Elevation (5E) - Elevation (13E) | = 2.3 -> sin (2.3) * 45 = 1.8 cm difference in azimuth ericsson mini link (| a |): | Azimuth (5E) - Azimuth (4W) | = 11.3 -> sin (11.3) * 45 = 8.82 cm | Azimuth (5E) - Azimuth (13E) | = 11 - > sin (11) + 45 = 8.6 cm
I.e. Converter 4W must be of 8.82 cm to the left of the main converter (looking ericsson mini link behind the antenna) and 2.98 cm higher than it. A converter for 13E should be of 8.6 cm to the right of the main converter (looking behind the antenna) and 1.8 cm lower than it. This is a pre-calculation of the positions of the other converters of the central. But their final position should be determined with readjustment for maximum signal and rotating each non-central converter (Skew). You can use Satellite ericsson mini link Finder for precise ericsson mini link setting. Some recommendations ...
But if one of the other satellites 'on the edge', then it needs to be in focus. Of course there are likely some weak transponders of the satellites ericsson mini link do not come out. Those who already have antennas (especially smaller) and are directed to this type of installation of a satellite system, it is better to crawl antenna pre companions who want to look and see what is accepted. In any case, this staging will take less programs from a satellite (due to weak transponders) than if the antenna is motorized ericsson mini link or fixed. As is bigger antenna, the more converters may be placed, since the gain is greater. ericsson mini link Tentative - 110 cm to about 30 between the end of satellites to 90 cm around 20 . Converters
In the event that will be adopted neighboring satellites (ie spaced from one another 3 degrees), and the fact that the offset in the rack will be very small, it is recommended converters are small irradiators (conical) as diameter ericsson mini link to facilitate setting them! Disek keys / DiSEqC switch /
Once the converters are set, insert the key and specify which satellite to which switching is: Assume that LNB1 entrance of Disek key is teased ericsson mini link converter Satellite 1 Satellite of LNB2 is 2, etc. From the menu of the receiver log in Satellite Configuration -> Satellite 1 -> LNB 0 -> DiSE