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Freeview reception - all about aerials

Your ability to receive all the Freeview transmissions depends on the suitability of aerial: the design style, "group" and its physical location.

Your ability to receive all the Freeview transmissions depends
published on UK Free TV

Updated 8th January 2014.

Your ability of receive all the Freeview transmissions depends on the suitability of aerial

  • the design style,
  • the "group", and
  • its physical location.

Standard type - Yagi aerial



The standard type of TV aerial is known as the Yagi aerial. It is mounted on a pole, and consists of a rod with a reflector (shown green) at the back and many spiky elements (in grey) at the front. The connecting cable connects to the element nearest the reflector, known as the driver (shown in blue).

These Yagi aerials are directional and so pick up signals best from a transmitter that the rod points towards. The more elements the aerial has, the better it picks up a signal and becomes more directional.

A standard-type aerial is all that is required for digital TV reception in most places. These antennae have between 10 and 18 elements and a single reflector. These are recommended for new installations for good digital television reception, but will more often than not function perfectly in good reception areas.

Typically these aerials are designed to receive only some transmission frequencies - see "groups" below.

High Gain aerials



These aerials are designed for poor digital reception areas, and have two reflectors. For maximum signal strength, some digital high gain aerials have up to 100 elements. Since the switchover to digital-only transmissions back in October 2012, most UK households now have good quality digital TV signals.

A more expensive aerial is only required where the signal strength is low, but can often provide the whole Freeview reception where it might otherwise be impossible.

The CAI (that represents aerial installers) has four standards for digital TV aerials. The highest standard "1" is for homes on the fringes of coverage areas, intermediate standard "2" is suitable for use within the coverage area; minimum standard "3" is for good coverage conditions.

These aerials can be either wideband, or receive only selected frequencies - see "groups" below.

Grid



You may haved used a 'Grid aerial' for analogue reception, but as they are generally unsuitable for Freeview reception, they have now generally been replaced by the Yagi type. However in some places a Grid aerial installation may work for Freeview: otherwise replace with a standard Yagi aerial.

Indoor

Indoor aerials are generally not suitable for Freeview reception. In areas of good signal strength it is often possible to receive some transmissions. Even where an aerial works, people often find that may get interruptions to their viewing (or recording).

Loft mounted

Loft mounted arrivals are not generally recommended for Freeview reception, as the roof tiles and plumbing will degrade the signal. Some compensation for this loss of signal can be made by using satellite-grade cable to connect the set top box to the aerial.

Positioning

The best position for a TV aerial is mounted outdoors, as high from the ground as possible, pointing directly at the transmitter. The signal can be blocked by hills and tall buildings. It should be positioned away from any other aerials.

Horizontal or vertical?

The transmitter will either use vertical mode which requires the elements of your aerial to be up-down, or horizontal mode which requires them to be level with the ground.

Groups

Both analogue and digital television is transmitted the same group of transmission frequencies (known as channel 21 through to 60). A coloured marking on the aerial shows the group.



To create the best possible analogue picture, TV transmissions from adjacent transmitters have been designated to several different groups of frequencies. By using an aerial that receives only the channels in the correct group, the analogue picture can be kept free from interference.

To receive Freeview transmissions from the same transmitter it has been sometimes necessary to use frequencies that are not part of the transmitter's normal group. When this has occurred, the aerial will need to be replaced with a "wideband" aerial (also known as group W) - one that covers every group.

As Ofcom is planning to move the TV frequencies again - perhaps as soon as 2018 - it may be wise to use a wideband aerial if you can to ensure you can keep viewing Freeview for many years to come.

Help with Television sets?
My TV is NICAM, does that mean I have digital TV?1
Are all Widescreen TVs digital?2
Why has my widescreen TV just made everyone look fat?3
Why are some channels are widescreen others revert to 43 with a black line down 4
If you have several TVs at home do you need separate decoders for each set or is5
In this section
Loft aerials1
Do I need to buy a booster?2
How to receive Freeview on your PC3
Indoor aerials4
Whole house digital TV5
Connecting it all up6

Comments
Saturday, 25 November 2017
MikeP
sentiment_very_satisfiedPlatinum

5:22 PM

Ashley Woods:

It depends on where you are in relation to your transmitter. If you are very close then a proverbial piece of wet string can be enough - but not reliable. The 'H' aerial is, I presume, either an old Band 1 VHF TV aerial that was used in the days of B&W BBC TV, or it could be a VHF radio aerial or it could be a DAB aerial. If it is the latter then it may well be sensitive enough to get some signals - but I'd be interested to hear what signal strengths you get woith the new TV aerial and the old 'H' aerial, please.



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MikeP's 3,011 posts GB
Saturday, 2 December 2017
A
Ashley Woods
12:47 PM

Hi MikeP

Thanks for your reply.
You are talking to a real amateur here and i have no test instruments , the TV just says 'signal very good' in respect of both - is there a way of measuring the signals or asking the TV.

I only bought the house this year and the 'H' aerial probably dates from the early 80s when house was built, but im unable to help id further
Ash

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Ashley Woods's 2 posts GB
Sunday, 3 December 2017
MikeP
sentiment_very_satisfiedPlatinum

12:21 AM

Ashley Woods:

Your TV should have a manual tuning system that will display the channel number (note that that is not the same as the programme number) being received as well as the signal strength and quality - it is the strength that is important. Your User Manual for the TV will tell you how to access that feature but make sure you do *not* perform any tuning at this stage. If you can't find the User Manual, you can usually find one on line by doing a search by make and model and usimng 'user manual' as a search criteria.

The 'H' aerial of that age is very likely to be a VHF type for either BBC on Band 1, ITV on Band 3 or else FM Radio on Band 2. Thus it is of little real value to you for TV reception. You should have a good local aerial contractor fit an aerial of the log-periodic type (it is important to ask for that type to be fitted) and do not fall for the 'con' of a 'digital' aerial as there is no such thing.



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MikeP's 3,011 posts GB
Saturday, 30 December 2017
K
Kingshuk
11:59 AM

Hi Mike,
I have a new Panasonic TX-24D302B LED Television. It says it has a Frewview HD. However, when I do the first time installation, it is unable to find any channels after the search. I do not have internet and I had thought that the TV comes in with a built in Freeview HD and just needs to install to be able to view the channels. Could you please advise what is the reason and the solution?

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Kingshuk's 1 post GB
M
MB
12:32 PM

Kingshuk: You have plugged an aerial in, haven't you?

Which is your transmitter? or provide a postcode

link to this comment
MB's 16 posts GB
MikeP
sentiment_very_satisfiedPlatinum

7:20 PM

Kingshuk:

A full post code is required to be able tooffer any advice. There are over 1000 transmitters and you could be trying to use any of them!



link to this comment
MikeP's 3,011 posts GB
M
MikeB
sentiment_very_satisfiedPlatinum

8:50 PM

Kingshuk: I was going suggest the same thing - the TV certainly has a Freeview tuner, but you do have to connect to an aerial. The onscreen instructions are normally enough, but reading the manual is something you need to do.

link to this comment
MikeB's 2,577 posts GB
Thursday, 4 January 2018
A
AnandLeo
11:38 AM

Freeview Digital TV Aerial
I live in a rented property and moved into a flat that has a small dish aerial. I was able to view all channels on Freeview digital TV for about a year and few days ago, I lost the reception of BBC channels. It started crackling, screen with black pixels, and loss of sound. I retuned the TV and then completely lost all BBC channels and many more channels. Only ITV, Channel 4 and few more channels are available now. Is it because of the wrong - dish aerial or is it something more than that.

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AnandLeo's 2 posts GB
S
StevensOnln1
sentiment_very_satisfiedPlatinum

12:31 PM

AnandLeo: A dish is used to receive satellite signals and is not suitable for receiving Freeview. Either you're actually connecting to an aerial on the roof or in the loft somewhere, or you're just receiving a strong signal being picked up by the cable. The cables coming from a satellite dish will have screw connectors, whereas cables from a terrestrial aerial (i.e. one used to receive Freeview) will normally have push connectors. Start by checking the cables and connections that you are using are the correct type and aren't loose or damaged.

link to this comment
StevensOnln1's 2,681 posts GB
A
AnandLeo
7:46 PM

StevensOnln1: Thanks. The connection to the TV is push, not screw, however, I assume it comes from a small dish. I searched and found cheap indoor Freeview antenna on ebay, that should solve the problem hopefully.

link to this comment
AnandLeo's 2 posts GB
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