All posts by Michael Perry
Below are all of Michael Perry's postings, with the most recent are at the bottom of the page.
Nigel Catt
It appears that having 100% signal, especially on HD channels is not a good thing at all and causes the problems you report.
YThere is a section of this website dealing with having too much p0f a good thing and makes several good suggestions that have helped many people.
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John Stewart
NO. A dish is sued to receive the signals transmitted from a satellite in geostationary orbit, such as those transmitted for Sky and FreeSat. It cannot receive any terrestrial signals at all, such as Freeview. For that you need an aerial of the correct type fitted to your abode and aimed at the correct Freeview transmitter.
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Caz
Because of Rob's very different location to you, the suggestion of a 'booster' (better called an aerial amplifier) is not correct. He is only 7 km away from the Oxford transmitter so gets a good strong signal already and it does not need amplifying. If it were then in his location he would have had far worse loss of services because of the signal then being far too strong.
As we do not have any idea of your location, other than it being in Buckinghamshire (with is not a small county), we cannot make any suggestions.
As David Linsay has stated, the item behind your TV set that is connected in the aerial feed cable is a power supply, the amplifier is mounted close to your aerial. The power supply needs to be left powered on to operate the aerial amplifier so your bedroom signals are properly delivered.
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Mazbar
Much earlier in the discussion of Rob's problem it was established that it is only affecting one TV connected to his system in the room that is adjacent to the wall which has his neighbours Virgin equipment at the other side. The problem is not present on his other TV sets, so the aerial is fine and not a factor in this particular problem. Likewise, he has tried moving the TV set to the other side of the room successfully, again showing the aerial system is not a culprit.
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Mazbar
With around 50 years experience in the TV servicing and manufacturing industries, I have a pretty good knowledge of installing and servicing TV and radio aerials, and satellite dishes, as well as servicing the receivers as well.
The tests carried out by Rob at the request of several contributors here have shown that the aerial installation does *not* have a problem.
If you look at Rob's reply, just above the latest from jb38 above, you will see the test shows very significant RF interference of the EMI type in the vicinity of where he normally has his TV set.
So it confirms our suspicions that the Sony TV is not at fault, though it may be more sensitive to EMI than it should be, but it appears to be some equipment (perhaps that supplied by Virgin to the neighbour) that is emitting EMI - which it should not do. There are rules about EMI radiations and susceptibility and I think this needs to be investigated by those equipped to conduct such investigations.
Rob
It might be worthwhile to look at the Ofcom website, namely Ofcom | TV or radio interference or reception problems and contacting them to investigate your problem further. (SN119HW)
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Kofi Taylor
Terrestrial TV signals do not travel that far under normal circumstances. Even the most powerful Freeview transmitter only has a range of little over 100kms! The nearest part of Europe would probably be Italy or Spain - and they are far too far away as well. Imagine how large the north to south measurement of Morocco or Algeria plus Niger or Chad, etc!
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Rob
It looks as if they have confused what aerial you have. It seems they think you are using an indoor aerial, that is one within the room where your TV set is - and they are rarely good enough unless you are almost next to the transmitter. So did you tell them your aerial is loft mounted or just said 'indoors'? If the latter, they will interpret that as being in the room with the TV.
Loft mounted aerials are often OK as long as they have a good 'line of sight' view towards the transmitter. A roof mounted aerial is better but subjected to the vagaries of the weather.
So you may need to go back to them and clearly state where your aerial is mounted and that you are just 7.8 km from the Oxford transmitter. You will also need to tell them what your normal signal strength and signal quality readings are.
You would probably benefit from telling then about all the tests and checks you have made and that moving the TV set to another part of the room away from that wall resolves the problem but it returns when the TV is put back in its usual place.
Hope that helps and let us know what the say.
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Yaro
Further to that said by jb38, you must not disturb the cables feeding the communal system. Plus you cannot put a 'conventional splitter' in the feeds from a satellite dish - they are not used in the same way as those for a standard terrestrial aerial.
So you will need to provide your own cables from your PolSat dish to your PolSat receiver and you may need further permission from the Council to fit those.
Note also that a receiver connected to the Sky/FreeSat cables (the two connectors Sat1 and Sat2 you mention) will only receive Sky or FreeSat. And you cannot connect those as well as the PolSat cables to the same receiver!
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Don Cross
What is technically known as 'ghosting' cannot happen with the reception of digital signals, it works differently.
But what you describe sounds like a fault in the TV set itself, especially as it does not appear on other sets.
I suggest you have the TV set affected checked by a local expert with that make.
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Monday 27 January 2014 11:05PM
Rob
Here's a little experiment you could try if you're reasonably handy with tools. Find a piece of plywood or hardboard that is larger than your TV set when stood on the floor behind it. Then lay some aluminium foil on the face of that board. probably best to glue it on with a little contact adhesive so it doesn't fall off. Then stand that against the wall, foil away from the TV, where you suspect the 'interference' is coming through. Then check your TV channels that have been causing annoyance.
Have they improved? If so then you have probably discovered where the problem originates, but more checks would be needed to identify the source.
(There is another check but that requires rather more 'DIY engineering' and connection to an Earth point. You could look up 'Faraday Cage' in a search engine. But if you try anything like that do, do, please be very careful of any electrical connections unless you are proficient with mains voltage electricity!).