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Satellite dishes the "Very Large Array radio telescope, New Mexico, USA
The dish is a type of antenna characterized by keeping a parabolic reflector .
Miniantena receiving satellite TV dish
Satellite dishes can be used as transmitting antennas or receiving antennas. In transmitting satellite dishes parabolic reflector reflects electromagnetic wave generated by a heating device that is placed at the focus of the parabolic reflector, and wave fronts generated out of the unit in a more coherent other antennas, while receiving antenna parabolic reflector focuses the incident wave at the focus where there is also a detector. Normally these antennas in microwave networks operating in full duplex manner, ie, transmitted and received simultaneously
Satellite dishes are often used at high frequencies and have high gain.
Table of Contents [hide ]
1 Types of Satellite Dish Antennas 1.1
primary focus
2 Systems that use satellite dishes
3 Types of installation of satellite dishes to receive satellite TV
Joint 3.1 devices used to receive free digital TV channels
3.2 Satellite TV
4 External links
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Satellite Dish Types [edit ]
There are several types of satellite dishes, the most common are:
The prime focus parabolic antenna, which is characterized by the parabolic reflector centered on the focus.
offset parabolic antenna, which is characterized by the parabolic reflector offset from the focus. Are more efficient than the parabolic primary focus.
Cassegrain dish antenna, which is characterized by carrying a second reflector near its focus, which reflects the wave radiated from the heating device to the transmitting antenna reflector, or reflect the received wave from the reflector to the detector device in receiving antennas.
prime focus antennas [edit ]
These antennas are also called paraboidales antennas. The antenna surface is a parabola of revolution with the feed at the focus. These antennas have a maximum yield of 60% (approximately).
Systems using satellite dishes [ edit] The systems
use dishes that include the following:
communications satellites.
Synthetic Aperture Radar (SAR), military and weather radar
television receivers via satellite . Radio links
. Amateur radio stations
.
Space Probes. Tracking Stations
spacecraft. Millimeter
. Sodar
Types
installation of satellite dishes to receive satellite TV [ edit]
Individual: Direct To Home (DTH ).
Collective: Satellite Master Antenna Television (SMATV ).
Joint
devices used to receive free digital TV channels [edit ]
To Spain usually consists of a disc of 80 cm offset , universal LNB, F connectors for T100 cable (2 units) and receiver free digital channels (FTA).
Satellite TV
[edit ]
satellite transmits open (free) for Spain
SES_Astra . Through the Astra 1G satellite can access Internet via satellite .
Eutelsat Hispasat
See also: footprint, support , converter (LNB ) F connector, satellite finder , azimuth, elevation , latitude, longitude , magnetic deviation, compass , mixer, receiver, scart , HPA , DVB, HDTV .
External links [edit ]
satellite TV in Spain
Direccionario
Satellite DirecTV - Dish Network - Internet Direcway
Patriot Antenna Systems
Internet Via Satellite Jaba Networks
Prodelin website, a subsidiary of Global TriPoint
The right to use a satellite dish Kit
digital satellite
antenna Angle Calculator
Step Guide: Installing and guide a satellite dish
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