Until the year 1996, the transmission of TV signal was done using Analog techniques. In the same year, the transmission of digital signals began. Digital television offered a superior experience as compared to old-fashioned Analog signal, not only in regards to sound clarity, but also picture quality.HDTV offers a precise, crystal clear sound and picture quality which makes sure the watcher has a television experience which simply cannot be compared to SDTV, otherwise called as standard definition TV. After you experience the superior picture as well as the sound quality of a HDTV signal, you would find it quite hard to bear with the outdated SDTV signal.The picture quality of your TV set is based on the amount of vertical lines through the display. The standard definition TV signal may include anywhere between 480 - 576 lines. On the other hand, HDTV is known to use no less than 720 lines to transmit its signal. Today’s standard is normally 1080 lines & thinner lines can offer a resolution of anywhere between two to five times better as opposed to SDTV, an enhancement which is capable of making both the picture as well as sound far superior than that on SDTV.But, so as to receive a HDTV signal, more than a standard TV set is essential. HDTV might incorporate a suitable tuner, otherwise a Set Top HD tuner can be essential. You can either rent it or buy it from your service provider. In case you decide to subscribe to your Satellite TV company, a dish powerful enough to receive an HD signal will be compulsory. And ultimately, you must have a suitable agreement with your service provider for High Definition TV programs.Besides, it is critical that you have your TV configured appropriately, or else, you won’t be able to enjoy the benefits of a HDTV signal. This need to be done once the equipment has been set up.The rising acceptance of the public towards HDTV signal is encouraging both satellite as well as cable TV companies to offer additional amount of channels in High Definition signal. The DISH Network, which is among the 2 satellite TV providers offers well over 130 channels in High Definition at present with a lot more expected in the upcoming period.Also, know that the installation process for DISH Network is quite straight forward. You can easily mount the dish nearby your window, on the terrace or roof or even in a yard. This will provide the dish with an unobstructed access towards the signals in the sky. But make sure, there are no branches in the way. Also, make sure you point the dish southward. DISH Network can install all the right equipment at no additional cost for their consumers in up to 4 rooms of your house.