My ITV/C4 Freeview channels have disappeared - what can I do? Is it my SCART ca
Brian Butterworth published on UK Free TV It is a feature of television signals that they can be effected by the weather. Aside from the obvious damaged that can be caused by wind or torrential rain, the onset of summer can cause a more intriguing problem called "inversion".
Basically, when the sun heats up the land, the hot air can get trapped below cold air at high level. This creates an "inversion layer" which acts like a polished mirror to TV signals. This causes two problems: you can receive both the original and a reflected signal from your own transmitter (on analogue TV this appears as "ghosting") or interference from TV transmitters that are normally too far distant.
The ITV/C4 multiplex of channels (ITV-1, ITV-2, ITV-3, ITV-4, CITV, C4, More4, E4, Quizcall) use a transmission "mode" called 64QAM, and it is sadly much more prone to these problems.
So, whilst a loft-mounted aerial will provide reception at some time, it will fail at others. The only real solution is to mount the aerial (or a new Class I aerial) outside on a pole, but some people report that changing the cable from the aerial to the set-top box to the high-grade satellite cable can also help.
The SCART connection, by the way, only carries a single TV picture, not the Freeview transmission multiplexes, so if this is disconnected it will result in degradation to every channel at once.
All questions
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Thursday, 22 September 2016
M
Mariakurczynsky 1:04 AM
Hi I cannot receive any freeview channels through my freeview tv or freeview box nearest transmitter Crystal Palace but your map shows area I live in Erith as poor reception( pale green ) I have a communal aerial on block of flats roof what can done if at all to improve receipt of these freeview channels? Thanks
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MikeP
10:29 AM
10:29 AM
Mariakurczynsky:
As you live in a building with a shared communal aerial, you first step should be to check with your immediate neighbours in the block to see if they have exactly the same problem as you report. If they do then you must contact the managing agents for them to have the aerial system checked professionally. You cannot do it yourself as it is not your property.
If your neighbours do not have the problem, then it is either you equipment that has failed or esle the connections from the aerial socket on the wall to your TV, etc, Start by swapping the flylead between the wall aerial socket and the equipment, they are very cheap to buy. If that does not cure the problem you will need to test whether your TV gets the signals in a neighbour's flat with their permission. If that works then your aerial socket feed is faulty. If that doesn't work then your TV is faulty.
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M
Martin R12:00 PM
MikeP:
Hi I have a problem with a communal aerial system only on Channel 54 PSB 3 Winter Hill
Its off the richter scale of annoyance because I cant/wont ask my neighbours and the landlord isn't too bothered about things like this. Taking my box to friends and family is just hassle I dont need
His aerial system looks like spaghetti junction and its probably faulty , short circuited or badly/over amplified. I doubt an attenuator will work and cant understand why its only on the PSB 3 band
His aerial is possibly misaligned but why does it receive other channels perfectly
I have been running though a checklist and its not HDMI radiation and my Coax leads are quality QED double screened. I dont unfortunately have another HD receiver to prive my Humax tuner may be faulty.
It can work for a while but generally now just loses signal rapidly flashing on and off.
Its so annoying that I may have to move. I need control of my own aerial
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Friday, 23 September 2016
MikeP
10:47 AM
10:47 AM
Martin R:
With a communal aerial system the only people who can deal with any problems are the owners or their managing agents. So you need to keep contacting them until they have the system properly checked by an aerial contractor. If you were to engage your own, they almost certainly refuse permission for them to access the system and will refuse to pay for it.
As you are apparently in a block of flats you cannot install, or have installed, your own aerial anywhere on the building with the permission of the building owner and you may need planning permission for an additional aerial.
Not knowing where you live, it is impossible to advise about which is the most likely transmitter for you to use. If you enter a full post code into this website you will get 6 small blue boxes below your posts containing links to useful reception information.
All I can advise otherwise is to keep talking to your landlord or their agents.
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Tuesday, 1 November 2016
since i moved in i have not been able to bbc channels . i tried today to retune and now all i have is bbc and no ther channles ?
can anyone help i have retuned a dozen times and still the samw
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Wednesday, 2 November 2016
MikeP
11:20 AM
11:20 AM
Sheena McDonald:
To be able to help with this type of query we need a full post code so we can examine the reception conditions and possibilities at your precise location. Only when that has been provided can we possibly offer any advice as there are over 1,000 transmitters currently.
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Thursday, 3 November 2016
SORRY POST CODE IS YO19 6QG , i have retuned on numerous occasions got itv etc back put pixalated so am now back to just bbc and they are pixalated so cant watch anything
thanks in advance
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sheena's: mapS's Freeview map terrainS's terrain plot wavesS's frequency data S's Freeview Detailed Coverage
Friday, 4 November 2016
MikeP
12:31 PM
12:31 PM
Sheena McDonald:
At your location, south of York, you should get excellent reception from the Emley Moor transmitter that is only 47 km away on a bearing of 237 degrees (that is roughly south west from location).
Are you using a good aerial that is suitable for Group B signals and has its small rods horizontal? Have you tuned to the correct channels for Emley Moor? They are shown listed in the information given by the 'digitaluk trade' blue box just below your posting. (It is possible that your TV has tuned to either Bilsdale or Belmont as it would 'see' their signals first and could be confused! You may need to manually tune following the User Manual to avoid that problem.) Have you checked all the connections are good and the cables in good condition?
Hope that helps?
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Wednesday, 9 November 2016
thanks yes the aerial is good i have had all channels working today then all of a sudden it goes pixalated all connections are ok i have ordered a new freeview box as the one i have is as old as freeview maybe it will be ok who knows
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Saturday, 6 May 2017
S
s worden10:00 PM
Hi
I lost all my Freeview channels , the other day, virgin media, had a few problems but that came back on but for some reason all my Freeview has disappeared :-( I have tried to retune etc turned tv off for so long contacted virgin they say should not affect Freeview, TV is fine so why should Freeview vanish? help I watch the Craft channels on there,
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