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How to install an Aerial




How to Install an Aerial

This web page gives you a good idea of what
aerial to use at your location and if you are
going to use a sub transmitter or a main
Television transmitter to get you digital signals


When Installing an Aerial always look at the location of where you are about to install the aerial.
With an aerial it may be possible to receive signals from more than one transmitter so signals may be stronger if you point the aerial at one transmitter than the other.

Look at nearby homes. 
Look at the size of the aerials and the orientation of them and which way they are pointing.  
This will give you an idea of what size aerial to use and what polarity to set it at.
 If the aerials on the houses near to you have a horizontal polarization this means they are picking their signals up from a main high power transmitter and with this you should get a full menu of all the channels available.



Horizontal polarized      Vertical polarized
aerial                          aerial             



If the aerials are vertically polarized and are small in size
they are very likely to be picking up their signals from a sub-transmitter.
 Its always best to try and get a main transmitter as you get the full menu of freeview channels.
But if you install your aerial on a sub transmitter, you may only get
around 30 channels and this includes radio channels.

You will normally find that if you live in a good reception area you can get the main transmitter and if you live in a bad reception area that's why they use sub transmitters   


So look at the roofs around you to get some idea of whats needed


Then look at the length of the aerials being used. 
The general rule is the bigger the aerial the greater the gain so this
means the bigger the aerial the farther the transmitter is away
and the smaller the nearer it is away.

Aerials normally come in 2 different formats, which are


  • Standard Aerial
  • High gain Aerial



I normally say to myself when installing an aerial

Up to 8 miles away from Transmitter I would use a
Standard aerial and up to 16 miles away I would be using
 a High Gain Aerial. 
  

At the end of this web page you will find
a selection of different gain aerials
that can be used in a vertical or
 horizontal polarization 


To help you with your aerial install you can get small aerial meters like the picture below


Picture of aerial signal finder

The way it works is you would connect the meter to the aerial and point your aerial in the direction you think the freeview signal is coming from.   You will try and light up as many green lights on the meter by turning the aerial to the left and the right to try and focus onto the strongest signal.
When you have done this, put the television on and re-tune the television. 
If you have the picture breaking up into blocks this means you may not
have enough signal.

Please press on the link below to help you on the
topic of blocking and pixilation of digital signals




The digital signal is a funny signal. 
In the old days of analogue TV if you had a bad signal you would just get a fuzz over the screen but you could still watch TV.
But the digital signal will not work if you have to low a signal or even
too high a signal. The picture breaks up and you cannot watch a thing.

Hope this has given you an insite into how to install an aerial. 




Terry recommends the tools and aerials
below to optimize the signal from your local transmitter





Signal Finder Meter


Only

£19.99


Picture of a Aerial Signal Finder







Standard Digital Aerial


Standard Digital Aerial works up to 8 miles from the transmitter

This aerial has around 11.5 db forward of gain

Only £28

Picture of an Aerial
 





High Gain Digital Aerial


High Gain Digital Aerial works up to 16 miles from transmitter

This aerial has around 15db of forward gain


Only £39.00



Picture of an Hi Gain Aerial