There are some myths and misinformation about TV antennas that are put on by many people – from the media for installers. Here we will try to dispel these myths.
Myth 1: digital TV antenna is required to view DTT.
There is no such thing as a digital TV antenna or aerial. There are broadband antennas grouped antennas, antennas periodic record, high gain antennas, network antennas and even wolsley antennas, but no digital antennas. All antennas are capable of receiving both analog signals and digital television and some have characteristics that make them better to receive a digital TV signal TDT. However an old air broadband can provide a digital TV signal TDT perfectly adequate without being replaced.
Myth 2: The higher the gain of an antenna the better the image TDT.
A digital image works or it does not and there is not much in between. This is known as “the cliff effect” or “digital limit ‘. They either have a good service or have stops and starts, blocks and pixilation. Excess signal can be as bad as too little signal. There is a range acceptable signal strength, but this should also be accompanied by a good signal to noise ratio (SNR). a high signal with low SNR is likely to give more vision impaired signal under high SNR. it is one engineers responsibility to ensure that the SNR is higher possible and the signal strength can cope with occasional fluctuations in signal strength.
Myth 3: TV antenna can be located in the loft or attic
For analogue this was true to some extent, but still based on the property of being in a good signal area. Digital TDT loss and signal interference caused by the roof and / or gable end almost always lead to a poor quality signal. Amplify the signal will only result in noise amplification and the TV signal.
I hope this has helped dispel some myths about television antennas. Cable Guys are always willing to help people by providing impartial, accurate. If you have any more questions about TV antennas, please do not hesitate to ask.