All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
jordon: Just noticed that you have asked the same question to what I already replied to @ 4:33PM.
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Maggie Pywell: The HD service from Crystal Palace was indeed off the air for two short periods on the date you mention, and so "if" by any chance you carried out a re-scan (many do!) after they went off you will require to carry out another re-scan to regain them, as no fault indications are shown for today, as yet anyway!
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Jane Hore: Looking at the trade reception predictor indicates to me that you are obviously if a very iffy area for reception, as none of the indications seen for your post code would fill me with confidence, Mux1 (Ch63) BBC1 etc being about the best, Ch's 61 & 58 (Mux C & B) also being in the green although not as good as Ch63, however the other unfortunate aspect is that the main ITV1 Mux2 transmitter (Ch60) is shown as giving variable reception, this along with MuxA Ch53 & MuxD Ch64.
The reason I say not filling me with confidence is because conditions do vary quite considerably over relatively short distances where you are located, to give a few examples, Oulton Broad library @ NR32 3LR shows reception of only one Mux (Ch63) as possible, with it being poor, Lowestoft Library @ NR32 1DR shows the possibility of three Mux's (Ch63-61-58) but with all being poor, and even although your post code does give better indications in practical terms I would consider these as only slight, and as such not reliable, so to me what you report would not be entirely unexpected, as in my experience these predictors are inclined to err on the side of the fanciful!
You will have to wait until the 23rd of November before the situation is liable to change for the better, that being what is indicated on the predictor anyway!
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Julie: Mentioning your location would have been of assistance in determining what strength of signal you are liable to be receiving, but in answer to your question there really any form of filter you can use to help eliminate localised interference.
The only two things you can do is, "if" your rooms window faces in the direction of the transmitter then site the aerial at the window using an extension lead, and secondly, make sure that the aerial is orientated in the correct polarity for the transmitter, horizontal or vertical as the case may be, find this out by looking at roof aerials nearby.
The transmitter that you receive from "may" still be on low power prior to switchover, but as aforementioned this being where knowledge of your location (post code) would have enabled this to have been found out.
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Ann Lynn: Well, there is always the possibility of inefficiency as far as your aerial is concerned, but based on what you have reported I think it very doubtful if any adjustments to it would bring any great dividends unless there is actually any fault with the aerial itself, like a bad connection at the co-ax / aerial connecting point, or its been blown off track with the wind etc.
As far as some channels up in the 800's are concerned, if you found BBC1 or ITV1 amongst these channels you should signal check them via the tuning menu to see what Mux transmitters they are coming from, as I suspect that they "might" be being received from Rouncefall on the rear side of your aerial, "if" that is your aerial is pointing to Bluebell Hill, Rouncefall's BBC1 on Ch44 with ITV1 being on CH41, (these being the same as Sudbury's high power Mux's) and if they are consistently better than what's on the correct EPG positions for these channels then setting your TV etc up using purely manual tuning for each Mux is liable to give more satisfactory results.
As far as going Freesat is concerned, I would always recommend to anyone that's fed up with bad reception caused by reasons out with their control (as most are!) to go for Freesat, as Satellite reception is 99.9% of the time totally reliable, with any time its not usually due to a particularly heavy thundercloud down pour.
Another interesting test would be to try coupling a TV directly to the aerials down lead, although "if" you have a mast head amp you couldn't do that as it requires to be powered via the co-ax.
Anyway, you could maybe give an update on checking the two channels mentioned in the 800 range, as I am interested in what you find.
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Brian Parker: Taking it that you are referring to Sandy (many Northern areas of Peterborough use Waltham) then it depends on what channels you are referring to, as remember you will only receive the main BBC and ITV stations at present as all others are still on low power, albeit that "some" can be picked up but in a very erratic fashion dependant on location.
Both main stations are quite powerful up in the Stamford area, and if its these main stations you are referring to then its liable to be caused by deficiencies with your aerial.
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jane hore: Sorry about having caused you confusion on that!
RF channels transmitted on a Digital transmitter are called Multiplexes or Mux for short, as each Multiplex channel contains a variety of programme channels, this unlike analogue where one RF transmitter channel = one programme, and in your case there are six Digital Mux channels.
People located in areas of bad reception usually always receive some Mux channels much better than others (or some not at all!) and its these individual transmitter channels I was meaning when I mentioned the various Mux channels and what their reception possibilities are shown as being.
November 23rd does indicate a better situation existing "on the trade predictor" for your location, but as I previously mentioned predictors of any sort can never really cater properly for local conditions, and indeed its quite impossible for anyone to accurately predict in cases like that as nothing beats a site visit.
However come the end of November and you still have problems then I cant really see anything other than Freesat rectifying the situation, as the situation seen at the end of November carries on into 2013 at the end of the chart.
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Jm F: Yes, you are quite correct about that type of filter, but the reason I didn't mention it was because that any filter no matter what its intended for, can have the effect of slightly reducing the signal that's wanted going through it at the same time as suppressing the one that isn't wanted, and although under normal reception circumstances this could safely be disregarded, however in Julie's case her reception doesn't give the impression of being very good in the first place I didn't want to suggest anything that would be liable to reduce it further.
Nothing to stop her trying it though if she chooses!
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Friday 29 July 2011 8:31AM
Ann Lynn: Well, you obviously have varying problems dependant on what's being used at the time, but the trade predictions for your location indicates Bluebell Hill as being your best bet, Rouncefall also being possible but only on the three main Mux channels, albeit reception of all three Mux's being down compared to Bluebell Hill.
I feel that your problems are basically caused by poor reception, so if the aerial amplifier has an adjuster on it I would leave it fully advanced for the time being, then concentrating purely on your Panasonic TV carry out a manual scan on Mux channel 59 (BBC1 from Bluebell Hill) and note what the indications are showing as (strength/quality) once done try the same test but on Mux channel 24, this being ITV1 etc from the same transmitter, this to give an idea of what you are actually receiving as predictors can have a wide margin of errors in what they indicate as being possible, these usually erring on the side of fanciful!
Although its unlikely, but if the Panasonic cant find the channels mentioned for the test couple up the Humax and try it on that, although both of these devices are about the same as far as sensitivity is concerned.