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#1
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That's about the description of various Freeview channels on my Ferguson
digital tuner. It's about three years old, have they improved ? should I get a new one ? Hair dryers, mobiles phones, cars passing by in the street, just about everything you can think of seems to interfere with the signal, mainly the audio, it just chirrups, clicks and generally drives us all barmy. We have a top of the range aerial from Maplins, one of the gold coloured ones, inside the roof space with a 25db mast head amp Could this be causing the problem ? Have I really got to put the aerial outside ? Ordinary terrestrial signal never had these problems with the aerial in the roof space, surely digital TV technology isn't weaker and cannot cope where the old signal could ? Then again all our mobile phones cause all sorts of things to crackle and pop within the house, not just the telly. My iPhone seems to be the main culprit, makes the clock radio upstairs go bonkers even when my iPhone is downstairs twenty or thirty feet away. Not just my iPhone that does it my work colleagues do it as well. My old Windows Mobile handset was just as bad. In a nutshell it's all crap, we've now started watching TV over the internet, doesn't seem too bad and never get any interference not like on Freeview. Could my problems be solved by getting a more modern Freeview receiver ? |
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#2
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In message , Jim
wrote Could my problems be solved by getting a more modern Freeview receiver ? Probably not. What is the quality of the aerial down-lead that you have connected to your quality gold plated aerial? http://www.wrightsaerials.tv/articles/coax-cable-quality-hmdi-m.html -- Alan news2009 {at} admac {dot} myzen {dot} co {dot} uk |
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#3
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"Jim" wrote in message ... That's about the description of various Freeview channels on my Ferguson digital tuner. It's about three years old, have they improved ? should I get a new one ? Hair dryers, mobiles phones, cars passing by in the street, just about everything you can think of seems to interfere with the signal, mainly the audio, it just chirrups, clicks and generally drives us all barmy. We have a top of the range aerial from Maplins, one of the gold coloured ones, inside the roof space with a 25db mast head amp Could this be causing the problem ? Have I really got to put the aerial outside ? Ordinary terrestrial signal never had these problems with the aerial in the roof space, surely digital TV technology isn't weaker and cannot cope where the old signal could ? Then again all our mobile phones cause all sorts of things to crackle and pop within the house, not just the telly. My iPhone seems to be the main culprit, makes the clock radio upstairs go bonkers even when my iPhone is downstairs twenty or thirty feet away. Not just my iPhone that does it my work colleagues do it as well. My old Windows Mobile handset was just as bad. In a nutshell it's all crap, we've now started watching TV over the internet, doesn't seem too bad and never get any interference not like on Freeview. I take it your region hasn't gone through DSO yet. We are in the process of going through DSO in the North-West of England at the moment and I can tell you that DSO changes everything. Your current problems MAY be solved by upgrades/repositioning aerial/cable but my advice would be to sit tight and wait for DSO. Until then use either/or analogue/internet/satellite/cable. Could my problems be solved by getting a more modern Freeview receiver ? Unlikely, but no harm in trying someone else's Freeview box. Sheila |
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#4
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"Sheila" wrote in message ... "Jim" wrote in message ... That's about the description of various Freeview channels on my Ferguson digital tuner. It's about three years old, have they improved ? should I get a new one ? Hair dryers, mobiles phones, cars passing by in the street, just about everything you can think of seems to interfere with the signal, mainly the audio, it just chirrups, clicks and generally drives us all barmy. We have a top of the range aerial from Maplins, one of the gold coloured ones, inside the roof space with a 25db mast head amp Could this be causing the problem ? Have I really got to put the aerial outside ? Ordinary terrestrial signal never had these problems with the aerial in the roof space, surely digital TV technology isn't weaker and cannot cope where the old signal could ? Then again all our mobile phones cause all sorts of things to crackle and pop within the house, not just the telly. My iPhone seems to be the main culprit, makes the clock radio upstairs go bonkers even when my iPhone is downstairs twenty or thirty feet away. Not just my iPhone that does it my work colleagues do it as well. My old Windows Mobile handset was just as bad. In a nutshell it's all crap, we've now started watching TV over the internet, doesn't seem too bad and never get any interference not like on Freeview. I take it your region hasn't gone through DSO yet. We are in the process of going through DSO in the North-West of England at the moment and I can tell you that DSO changes everything. Your current problems MAY be solved by upgrades/repositioning aerial/cable but my advice would be to sit tight and wait for DSO. Until then use either/or analogue/internet/satellite/cable. Could my problems be solved by getting a more modern Freeview receiver ? Unlikely, but no harm in trying someone else's Freeview box. Sheila There are people on here that know more than me but it sounds like you have pointed out a problem at the start. The amp is needed why. If the aerial is any good the signal should be OK without an amp. If the location of the aerial means that an amp is needed then you have the aerial in the wrong place. a 25db amp is boost around 500 times so the signals local to you are getting a big boost straight into the front end of your receiver causing desencing . The TV signals are very weak compared to the local signals and even with the boost are probably not very clean so any more noise on the signal will cause the problems you describe. Try moving the Aerial and remove the amp or reduce the gain as required. then see what you get. In my experience amps are not always a good thing.. I went to a house once where they had a amp and a problem with the TV. I retuned the TV and found a "Chanel" where ALL the channels were on at the same time. My aerial colleague called and fitted a huge attenuator and all was OK.( he charged around £5 as a favor to me). Seems a cowboy rigger had fitted a hi gain 18 element aerial on a very tall , large pole and put a big gain amp on it . as it is in my area I know a 10 element would suffice but the customer had paid lots of money for this install. Gary |
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#5
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We have a top of the range aerial from Maplins, one of the gold coloured
ones, inside the roof space with a 25db mast head amp Oh good grief! Bill |
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#6
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"Bill" wrote in message
... We have a top of the range aerial from Maplins, one of the gold coloured ones, inside the roof space with a 25db mast head amp Oh good grief! Bill I was thinking something more obscene than that Steve Terry -- Get a free Three 3pay Sim with £2 bonus after £10 top up http://freeagent.three.co.uk/stand/view/id/5276 |
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#7
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#8
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In article ,
John Legon wrote: At 02:57:50 Mon, 16 Nov 2009, Bill wrote in article 9aGdnatsy6QyIp3WnZ2 : We have a top of the range aerial from Maplins, one of the gold coloured ones, inside the roof space with a 25db mast head amp Oh good grief! Dunno nothing about Maplins aerials but I do know that a decent aerial in a loft space can work well for Freeview using a mast-head amp in a marginal reception area. It all depends on what the roof is made of - and which band you are using. Red concrete tiles can attenuate the signal by 30dB on upper Band V. And then you have the fact that the aerial isn't looking over the rooftop next door but through its roof, too. -- From KT24 Using a RISC OS computer running v5.11 |
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#10
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"Jim" wrote in message ... Hair dryers, mobiles phones, cars passing by in the street, just about everything you can think of seems to interfere with the signal, mainly the audio, it just chirrups, clicks and generally drives us all barmy. We have a top of the range aerial from Maplins, one of the gold coloured ones, inside the roof space with a 25db mast head amp Get the aerial outside. And see if you can do away with the masthead amp altogether. The losses in loft space for UHF signals can be very high. So even though you are using a high gain aerial its going to struggle to do a good job from inside. The mast head amp is going to amplify not only the signals you do want, but also the ones you don't..... like the hair dryers, mobiles phones, cars passing by in the street etc. Adding an amp to a system only serves to amplify the interference in most cases, so if its not needed, get rid of it. Sticking an aerial in the loft with a booster is a nice idea, but its never the best option unless you live in very high signal areas where you can afford the massive losses that come with such an installation. Fit high quality coax, with double screen, CT100 satellite coax or similar as interference can also enter through the coax feed if the quality is compromised. Have I really got to put the aerial outside ? Yes, ideally. No aerial in a roofspace will ever perform as good as an aerial well placed outside, no matter what type of aerial it is. Unless it is not possible, then get it installed outside. You`ll be suprised at the improvement in signal strengh. You may find that it works well even without the preamp. If it does then don't use the preamp. Ordinary terrestrial signal never had these problems with the aerial in the roof space, surely digital TV technology isn't weaker and cannot cope where the old signal could ? Unless you are in an area where Digital Switchover has happened, then your digital signals are on much lower power than the analogue ones. Think about it.... In a nutshell it's all crap, we've now started watching TV over the internet, doesn't seem too bad and never get any interference not like on Freeview. Could my problems be solved by getting a more modern Freeview receiver ? Maybe, or maybe not. I dont have access to your installation to see how good or bad it is. Sounds to me like you don't understand much about how UHF RF works. Your first step is to get the aerial outside, as high as possible with decent coax and try not to use the masthead preamp unless it is really needed. As I said before, they amplify everything, even the interference you don't want in some cases. You have never said when you are located and what transmitter you use. The first part of your postcode 'ie S30 3' and the transmitter you are getting the signals from would be most helpful. Hills between you are the transmitter can seriously affect the signal to you, so that is another thing to think about. Hope that helps. |
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