The emergence of digital tv aerial broadcasting throughout Europe and most noticeably in the UK, is causing a revolution. The plethora of free digital terrestrial, Freeview and all of the UK, as well as the countless digital services that are now available via satellite means that if you don't want to be left with just the handful of channels available through the soon to be outdated analogue services, you need to upgrade to digital. And analog TV will be obsolete much sooner than most people think.Whether it be free to air or satellite the choice is ultimately down to the customer, but in order to benefit from the ‘crystal clear' reception and wider selection of channels, digital is definitely the way forward.Hand in hand with the digital TV boom, is the rapid emergence of DAB (Digital Audio Broadcasting) which is the digital transmission technology for radio, which ultimately will replace FM radio. In 2006, the sales of DAB receivers in Great Britain exceeded sales of VHF radios for the first time.As digital television has become more popular, so has the need for qualified advice and information regarding Digital TV aerial and satellite installation. TV aerials, satellite dishes and their installation are a key element for successful digital television viewing and DAB digital radio enjoyment. This is one of the primary areas which is often overlooked by many people when upgrading to digital television. It is pointless spending several thousand pounds on the latest Plasma or LCD television if the signal being put through the equipment is rubbish!Correct installation of the TV aerial or the satellite dish, the receiver and wiring are essential. It is vital that the whole installation is approached with the professional experience and digital expertise required to ensure trouble-free digital televison viewing. By ensuring that the aerial or the satellite dish is installed in the correct position and with the adequate fixings, a constant and high quality picture will be maintained. Digital signals either perform perfectly or very poorly, this means that if your TV aerial is not up to the job it will freeze occasionally at best, or at worst, not work at all.The other thing to be borne in mind is that some transmitters do not transmit digital signals at all. This means that you have to try and receive your signals from another transmitter. As such the aerial must be up to the task!So with the new phenomena of digital aerials and the elements that have to be considered when fixing them as well as satellite dishes, how do you know that yours will be positioned accurately and competently to ensure quality digital TV viewing ?Good aerial installation companies should already have a proven track record, supported by companies that have aerials and satellite systems installed regularly for their clients. They should be members of the quality governing body, CAI (Confederation of Aerial Industries).