FTA Online Canada

DISH INSTALLATION

Do’s & Don’ts of Dish Antennas, What They Don’t Tell You!

by FTA Online on Jan.28, 2009, under DISH INSTALLATION

Background:
Television entertainment satellites are in a geo-synchronous earth orbit (moving at the same speed and direction as the earth is turning) above the Equator, so the satellites appear stationary in the sky to us here on earth. Dish antennas are commonly used in satellite reception. Their function is to receive the highly directional radio waves, concentrate and focus then into the LNB (Low Noise Block converter). The LNB’s job is to sort, amplify and condition the concentrated signal to a stronger level for transmittion down the cable to our receiver.
In FTA “surplus” major providers logo dishes are very common. One on the most popular low cost surplus dishes is the 18 to 24 inch round/oval. Your distance from the Equator determines the size of the dish required for your installation. The greater the distance the larger dish is required. This 18 to 24 inch round/oval work well for S.Canada and continental USA reception of provider’s circular satellites.

Different types of fixed dishes;
The dishes can be divided in to two basic groups, single LNB dish and multi LNB dish.
The single LNB dish is a round or vertical oval dish that is non-skewing (non-tilting).
The multi LNB dish is an oval dish with more than one LNB and it is a SKEWING (tilting) dish.

Skewing:
This is the dish being able to rotate on its center axis (similar to the steering wheel of a car) to track multi-satellites. If you could see the satellites in the sky, they would appear in an arch, like a rainbow. Skewing is necessary (continue reading…)

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