All posts by Michael Perry
Below are all of Michael Perry's postings, with the most recent are at the bottom of the page.
Peter:
From the information you have given, it rather looks as if you could have an aerial fault. I suggest you have it checked. Also make sure you are tuned to the correct transmitter as Slapton is fairly close so the set may be trying to get those signals.
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Dawn Etchell:
To be able to help you we need some more information. Please provide a full post code so that we can examine the reception conditions at your location (a partial post code does not help). Please also supply the signal strength readings from your TV set (the User Manual will tell you how to get those). It wou;d also help if you give us the channel numbers the TV is receiving (note the programme numbers), these are usually shown on the same page as the signal strengths.
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JohnW:
I suspect, then, that you are suffering from periodic interference. Nothing in a TV or a TV transmission would caise something to affect your reception every 9.8 seconds. As it also appears on a second TV set then you will have to investigate where the source is. It will have to be something with a regular pattern to what it does or how it works. What it might be we cannot tell remotely.
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Hardy:
You need to be thinking ahead and considering the channel changes expected between now and about 2021. Though some changes are already known, others are still uncertain. Because of that, you need an aerial that give a decent performance over a wide range of signals between channel 21 and channel 60. Many 'wide band' aerials have poor performance at one end or the other, but a good log-periodic will give fairly flat performance over that range (mind you, cheap ones don't!).
I wonder if absolute gain is an essential for you? A good aerial with good performance is the starting point and if signal strengths are genneral below 50% then a good in-line amplifier usually helps. You should be aiming to have between 60% and 75% on all channels.
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Jamesmat:
Your posted URL is potentially dangerous as it carries an unwamted payload.
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fred:
You've got it right. An aerial for TV reception is an aerial. It matters not what form of modulation is used to carry the information on the carrier signal so a UHF aerial with the correct frequency coverage will be all you need. The 'digital' epithet is a con for more money usually.
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ForzaManchester:
It's because it is a local multiplex aimed at Manchester only, so does not need as high a transmitter power as other multilexes aimed a much broader range of viewers locations.
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Michael Ololeye:
Indoor aerials may work when you are close to a main transmitter or one that radiates a strong signal. As Norman D Landing states, you would be much better off having an aerial mointed above your roof, possible mounted on a chmney stack, that is a log-periodic type so that it is suitable for all future planned transmissions.
Where you were near Colchester is just about near enough top Sudbury to get reasonable reception.
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Roger Scott:
Instead of using a diplexer feeding two aerials into one TV, you may well do better to have a coaxial switch that is fed by both aerials. You can then switch between Hannington and Crystal Palace without getting any problems of interference between the signals. Plus there would be less signal loss.
When I live in Swindon, I used one so I could get both Mendip and Oxford signals and watch Central South as well as BBC West. It worked very well for me so it should be ideal for you, certainly better than using a diplexer with its losses and risk of serious interference on some multiplexes that share the same channel.
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Sunday 28 January 2018 11:41PM
JohnW:
You need to check what the signal satrength is being reported on her TV set is. Too strong or too weak signals can give the weffect your are reporting. The post code you gave is just 1 km from the transmitter and it is highly likely that she has too much signal now. That can be reduced using coaxial attenuators (available quite cheaply from Amazon and others) inserted into the aerial feed. Do not allow the weight of the attenuator to 'hang' on the aerial input socket of the TV, use a short flylead between the attenuator and the set.