Aerials are visible on virtually all rooftops, and many people still require an aerial to watch free TV services such as Freeview.
All free TV services now require the use of the TV aerial, despite the old TV system now being extinct. In order to receive these services, you will require the appropriate aerial. It must be in good condition, and it needs to be aligned correctly. For example, if you live in Liverpool and are installing the aerial, you would need to check online where the signal points are in Liverpool to ensure it is pointed in the right direction, or a professional can do that for you. Aerials either work across all airwaves that are used to transmit programmes, called wideband, or they only operate with a certain collection of broadcasting frequencies, called grouped. The end of the aerial will have a stopper that is coloured to indicate what group the aerial can operate with. http://www.digitaluk.co.uk/reception_guide breaks down the stopper colours.
Choosing an Aerial
Before you choose an aerial, you must be aware of what aerial will work best based on your location. A professional offering Bath TV aerial installation services can assist you with this, or you can use an online signal checker to help you to make an informed decision. Most TV service providers recommend a rooftop aerial, as they are less susceptible to interference from electronic devices than internal aerials are.
For those that live in shared accommodation, such as house shares and flats, a communal TV service will be required which can then be distributed between the rooms and/or flats. This is simple due to a common restriction that is placed upon the number of aerials that can be installed on one roof. If you are unsure, ask a professional such as http://steveunettaerials.co.uk/services/tv-aerials-repair-installation-bath/.
The lifespan of TV aerials is relatively good, but they can become damaged as they are installed on a roof. You will know if it needs replacing as the quality of the signal will reduce; the sound quality may suffer or the quality of the picture itself. Before purchasing or organising a replacement, check the positioning of the aerial first; the wind may have moved it so it is not optimally aligned. If you are unsure, simply contact a professional.