• Involves radio waves.
• TV, Radio, Paging networks often radiate from fixed terrestrial transmitters which are usually based on hills, tower hills or mobile receivers.
• Not used so much nowadays due to an advance in technology, this includes newer and faster methods of broadcasting. Such as digital and internet TV.
• Terrestrial transmitters’ waves can’t carry through objects which obstruct its path. This is a disadvantage to those living further away from the transmitter or on the other side of a hill.
• Bandwidth limits the signal to a certain degree whereby the outcome is affected and waves cannot be transmitted uninterrupted.
• Bandwidth restricts picture and sound transmissions affecting output and causing ‘fuzzy’ sounds and/or pictures.
Cable Broadcasting
• Signals are transmitted through optical fibres that are installed in the subscribers’ property.
• With cable TV one can only receive such a feature if your whole street is willingly to have it, as law will only allow the broadcaster to dig up the ground once.
• This is an advantage to the broadcaster as it means everyone on that street would have to subscribe with them.
• Cable T V has a number of advantages over the original analogue, as the reception was better. This meant that the viewers had to make few adjustments to the external antenna.
• Because cable can be somewhat ‘closed’. This means the broadcaster are authorised to show whatever they may want to show without having to comply with certain age restriction rules.
• Advancing technology means that cable can also provide their customers with internet and telephone services. Thus eliminating the costs of each individual service.
Satellite Broadcasting
• Satellites are high in the sky meaning chances of interruptions are reduced.
• Unless weather is extremely bad connection remains continuous.
• Provides a much wider range of TV channels as opposed to terrestrial or cable.
• The larger the size (diameter) the better the signal strength as there is more space to aim at it.
• Satellites can broadcast to a wide range of countries because they are so high up, meaning you can receive channels from other countries.
• You have ‘On Demand’ channels such as the weather which enables you to get the latest on the weather 24/7.
• Because satellites are so high up, they can provide clear channels for those living in rural areas. This is also very useful as they make use of internet services.
• This modern and futuristic function means that viewer can record TV programmes to watch at a later date or watch it as many times as they please. You can fit your forthcoming events around your favourite TV show as you can check in advance what programmes, films and documentaries are yet to air!
Digital Broadcasting
• The all new high definition means picture quality is at its all time high with things appearing as though they are right in front of you.
• Digital TV is gradually replacing analogue TV (all of the above).
• With more channels than ever before, clearer pictures and quality sound, with luxuries such surround sounds, bring the film to life.
• Aspect ratio- now provides a widescreen cinematic feel as it measures 16:9inches enabling the viewer to view more of that particular shot. Whereas an olden day terrestrial viewing would come up in the standard 4:3 viewing which excludes a lot of the shot.
• Pictures are clearer as a result of more pixels on the screen which give off a higher resolution and make that moving image crystal clear.
• Although digital broadcasting can sometimes be affected by the weather this problem is usually resolved within seconds followed by a general apology.
Internet Broadcasting
• Newly introduced.
• TV via the internet, most commonly used here in the UK- BBC iPlayer.
• There are two ways of which one can watch their desired programme:
• Streaming it to their media player which consists of buffering to ensure their programme is constant or simply downloading it on to their computer.
• Because the internet is such frequently used in and everyday around the world competition is up to ensure viewers stay by making content free of charge with a small minority which have to be paid for.
• Watching TV this way is a fast and efficient way of watching things as you can pause, stop, rewind and fast forward as it suits you.
• This internet package is usually inclusive with your TV and telephone connection which has upgraded a lot since it was firstly introduced with cable.
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