For people who are looking for a different type of viewing experience than terrestrial or cable offer, they should try getting television service through communications satellites. Satellite TV is a type of service which gives you a greater array of channels and services, and this means that there are several channels that you must have a subscription to, as well.
In 1962, the first relay satellite television signal was completed by Telstar satellite from Europe over North America. Syncom 2 premiered a year later as a geosynchronous communication satellite. The Early Bird was the first commercial appearance of a synchronous orbiting satellite, and that occurred in 1965. Two years later, the Soviet Union formed Orbita which works by using the elliptical Molniya satellites to redeliver and rebroadcast television signals to downlink stations (ground-based). Ekran - the first Russian "geostationary satellite" - carried Direct-To-Home TV in 1976.
How does it work? Altered from FM to baseband, the frequency modulated analog signal comprises both the audio sub-carrier and the video signal. In most cases, the digitized signal is QPSK. As a general trend, digital TV (which includes those which are transmitted via satellite) are based on MPEG and DVB-S (both open standards). In order to encrypt, scrambling through Conax, Dicicipher, BISS, Irdeto, Viaccess, Nagravision, VideoGuard, PowerVu, and Videocipher are used.
Satellite television usage comes in three main types: direct reception by the viewer, reception via local TV affiliates, and headends reception (then locally distributed using terrestrial cables). Of the three, the first one includes DBS, or direct broadcast satellite, and TVRO, also known as television receive only, both of which are services offered in homes and hotels.
If you think that you would prefer a television service with the greatest clarity and resolution, you might wish to go with satellite TV instead of analog television. Satellite TV uses the more advanced Ku band signals over the already outdated types of C-band analog cables. Satellite TV also guarantees broad coverage and stronger reception. For any person who does not have the ability to live somewhere where there is cable access or for someone who lives in a rural area, this is the type of television they should have. Unlike traditional cable providers in local areas, satellite TV gives additional subscription offers. If you want the most varied programming options, then this is for you.
Source: http://thebestsatellitetvdeals.com/new-satellite-tv-providers/
tim gunn tim gunn built to last obama state of the union address 2012 obama speech terrell owens terrell owens
কোন মন্তব্য নেই:
একটি মন্তব্য পোস্ট করুন