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All posts by jb38

Below are all of jb38's postings, with the most recent are at the bottom of the page.


aaron: That transmitter you see in Barnack Road was only built to cater for the converted or newer upmarket properties dotted along the waterfront areas of Stamford, (plus a few others!) as these are effectively screened from both Waltham and Sandy, as many of the properties you see further along the Barnack Road itself (near Cummins Generator factory) can receive signals perfectly OK from Waltham, that being the purpose of the single log periodic aerial mounted much lower down the mast, i.e: to pick up the signals from Waltham.

The analogue signal from the Stamford transmitter was always very difficult to receive at any distances much past the level of the Empingham Road junction where it leaves Scotgate, likewise the top end of Tinwell Road if going to the West, so needless to say that come the end of the month a few more tests will be carried out to see exactly where the digital signal can reach compared to the previous analogue one.





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kuffman: Are you sure you are not hesitating when pressing the sequence?, as after pressing services the "4-0-1-select" has to be done as an even consecutive action with no hesitations between any of the actions or it wont work, so dont look at the screen whilst carrying it out.

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Feedback | Feedback
Thursday 18 August 2011 9:15PM

kat: Unfortunately not be aware of your whereabouts makes it difficult to provide an answer to your query, as checking the Freeview reception possibilities for your area cannot be done without a post code being given, these in most cases being an approximate location anyway and "not" pin pointing a persons residence.

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Alex: I have seen it reported that Ch66 reception from Tacolneston is very weak, and your hard drive recorder is only likely to be picking it up because its more sensitive than the TV.

You should try a Ch66 signal check on your TV to see what the level / quality is showing as, plus if not already doing so, try plugging your aerial directly into the TV, as if by doing that the signal then shows a significant rise carry out a fresh re-tune storing as necessary.

Although the weak signal is not hopefully going to be a permanent feature, but if you do find that the picture is reasonably stable with the aerial directly into it, then you could purchase a two way powered splitter and use that to feed both devices, as each would then be receiving the same signal strength.

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aaron: It already partially is, and the change will be complete at the end of this month. Your aerial should be mounted vertically, that is with the elements running from top to bottom (on its side as you put it) and with it obviously pointing at the transmitter mast in question and "not" anywhere else.

The other point to note is that its a repeater of Waltham and "not" Sandy (Anglia) which for local news services has always been a bit alien, as Stamford is much more aligned with Peterborough and not Nottingham, Derby etc.

Please also note that it will not have the same full range of programmes as is obtainable from Waltham either, as the transmitter is in the category of being a "light" services one, this not changing!


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Freeview modes | Installing
Friday 19 August 2011 6:12PM

Tim: Before you call anyone in, getting back to scratch, although you have said that the aerial was well aligned you did not actually confirm that it was vertically positioned, is it? Another possible factor exists and that concerns the booster, have you tried by-passing it? as although used indoors they are very reliable its not impossible for one to develop a fault.

And to narrow the problem down further, you should really try to determine if you are the only one experiencing difficulties by making enquiries locally, as if they weren't then that would be a positive indicator as to the possibility of some other fault applying like cabling etc.

A final puzzle I have concerning something you said on the 15th @ 09.12am, that being your comment that your recorder was tuned to another transmitter and as such is less affected, what transmitter?


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Freeview modes | Installing
Friday 19 August 2011 8:57PM

Tim: Sorry to keep on about it, but it wasn't if you had checked the booster connectors I enquired about, it was asking if you had tried by-passing it? meaning to remove the in / out plugs and join them together.

The reason for requesting this check is that if a fault developed in the booster it would be like fitted a large value attenuator in line with the aerial input.

However, if the plug joining exercise is too inconvenient to try, a simpler way of testing the booster is to simply switch off its mains power whilst watching the TV, because if the picture rapidly vanishes then its OK, but if it makes little difference then that suggests that it isn't!

For accuracy, this test should really be done whilst the picture is bad, this just in case its failing later on in the day due to thermal reasons.

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Robert Towning: Assuming that are using Waltham, HD will not be transmitted from there until the second stage of the switchover on the 31st of this month. You should though be receiving BBC far better than any of the other channels, as the BBC multiplex is on high power.

I suspect that the EPG1 BBC you are receiving is from elsewhere, so either carry out a signal check which should indicate the EPG1 Mux channel, or have a look up in the 800 ranges to check if another BBC is indicated there, or even just carry out a manual tune on Mux Ch61 (Waltham BBC1) to check what comes in.

If that procedure gives the desired result, the only way of storing BBC1 in the EPG 1 position is to first of all blank the memory of stored channels, this done by removing the aerial and carrying out a re-scan, then when complete re-connect the aerial and then as before carry out the manual tune on Mux Ch61 again, storing the results.

You can then select to add channels, this filling in the rest without upsetting the BBC already stored.

Some TV / boxes have an area selector in their tuning menu facilities, this cutting short the procedure, but they are all different to each other brand dependant so its difficult to give precise instructions.



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Lawrence: These channels you have mentioned are on full 150Kw power, so purely for a test try carrying out a re-scan without the aerial connected for purposes of blanking out anything stored in the memory, then once done reconnect the aerial and do a manual tune on Mux Ch25 (Ch4/5/ITV2 etc) storing the results to enable you to make checks on picture quality etc, giving an update on results once done.



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Brian King: As has been said by Briantist / Matt, some devices are more sensitive than others, but an easy way to even this out, albeit on a temporary basis, is to use a simple booster in line with the least sensitive device, as this will lift the signal to just above the level that is causing you the problem.

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Freeview modes | Installing
Saturday 20 August 2011 9:04AM

Tim: Thanks for your update, and so long as the test was carried out whilst the picture was bad (very important!) then the booster can be excluded, and just like Briantist has previously mentioned, I also will be most interested in the diagnosis received from anyone you call in, as it really seems to be one of these type of problems that will only be rectified (hopefully!) by a site visit, as I suspect that other aspects exist of a nature which might appear as insignificant, but not! might also be applying.

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Freeview modes | Installing
Saturday 20 August 2011 9:56AM

Tim: Should have really have suggested this earlier, but if your source of interference is NOT of a UHF RF nature, then a simple highly effective test can be carried out using a small portable radio that has a LW band on it.

This is because long wave radios can act as great electrical interference source sniffers, this achieved by tuning it to a blank spot on the scale where no stations are being received, (e.g: Radio 4LW) then turning up the volume slightly.

You can then try it sitting close to a mains power socket prior to the time that the problem with reception starts, making sure that no excessive buzzing noises etc are heard, then noting if this situation has changed after the picture problem has started, this indicating that the source of the problem is mains borne.

Don't position it anywhere near to the TV though, as some of these can radiate all sorts of interference up to short distances away.

You can also use this type of device to check on faulty water tank thermostats etc, or anything that involves electrical contacts.

Mains sourced interference may be nothing to do with your problem, but thought it worth mentioning as a final suggestion.




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Andrew: I very much doubt it! as even Hunmanby which is very roughly in the same line between Oliver's Mount and you doesn't indicate as stretching as far as you, if though its easy to alter your aerial then its worth a try, you most likely having to use manual tuning on each Mux for a test, blanking the memory before doing so by scanning without the aerial being connected.

Hunmanby: BBC Mux Ch48 - ITV Mux Ch42

Oliver's Mount: BBC Mux Ch57 - ITV Mux Ch60 -HD service Mux Ch53 - ITV3 etc Mux Ch54 - others Mux Ch's 58 & 61.

Remember though that in both cases the aerial has to be vertically mounted.

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Freeview modes | Installing
Saturday 20 August 2011 11:11AM

Tim: Just to clarify any possible ambiguity, when I referred to Radio 4LW I was really meaning NOT anywhere near to it, as anywhere near it would kill the receivers sensitivity for sniffing out interference.

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Mark A.: Yes, I agree that this would be a very useful facility, even if as on some sites the delete option expired after a few minutes or so, as that's just about long enough for anyone to suss out that they have maybe misinterpreted what someone has meant, this being very difficult on occasions!

Of course even without the above, I would be quite content just to have a preview facility which incorporates an edit option.

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Feedback | Feedback
Saturday 20 August 2011 2:29PM

Sunflower: Try taking out the Sky boxes RF input lead from your normal aerial "before" trying to alter the modulators RF output channel and see if that works, as if it doesn't and you are using the correct procedure, which you appear to be doing, then that's inclined to indicate a fault with the box.

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Freeview modes | Installing
Saturday 20 August 2011 3:13PM

Brian Rawlinson: It would have been of assistance to know your location as reception checks etc could have been made, however apart from that the problem you are experiencing could possibly be linked to the fact that when transmitters change powers at switchover they go onto an 8K transmission operating mode, this causing problems with many sets, and with on some occasions it not being a rectifiable problem.

I tried to check the spec on your device but it doesn't give that info, but the fact that you have actually received something since switchover suggests that it is capable, but exactly how efficiently is another thing all together, as many sets have to have software updates to allegedly cure a range of 8K derived difficulties.

I will say that your particular model is no stranger to firmware updates, as many people experience problems with it and other Philips devices of this nature.

If you come back with your location (pref post code) the transmitter transmissions details can be checked on, as dependant on which transmitter is involved 8K might not be applicable to all Mux channels, and a manual tune for testing purposes can then be carried out on that ones that aren't.



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Freeview modes | Installing
Saturday 20 August 2011 3:14PM

Tim: Yes, post an update on whats found, or maybe suspected anyway!

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Lawrence: Yes, unfortunately that's the kind of problem that is inevitable when the main transmitters are on such a high power compared to the lesser ones, as in many areas its difficult to strike a happy balance between reducing the main ones but without killing off the weaker channels.

About the only thing that can be done in these circumstances, which I will say are only temporary until 23rd of November, is to use a booster with a variable power, using the trial and error way of just backing off the main channels a little bit at a time and no more, hopefully by doing this not having killed the weaker ones in the process.

Nothing else can really be done except to wait until November when the situation should correct itself, at least it will do for some, as stations operating variable transmission powers will always cause problems for many people.

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Feedback | Feedback
Saturday 20 August 2011 8:15PM

jacko: Basically its by keeping the Sky boxes RF output channel away from any of the channels used by Tacolneston Freeview service.

Take the normal aerial (from roof) plug out of the Sky boxes aerial input, then on the Sky boxes remote control press "Services", then whilst NOT looking at the screen press "4 - 0 - 1 - Select" in one smooth operation without hesitating between anything.

You should now see a list with RF output being mentioned, punch in any number at least two channels "AWAY" from any of these Tacolneston Mux channel numbers, 53 - 58 - 60 - 61 - 63 - 64.

Finally replace the Sky boxes normal aerial input and re-tune your analogue TV to pick up the Sky boxes new RF channel.

PS: Should you not see the selection list after going through the "4-0-1-select" sequence, then its because it wasn't done smoothly enough.



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John Fuller: If referring to the Mux channel that Ideal World / ITV4 etc is on, its operating on a much lower power than the main stations and with many areas North of the transmitter such as yours finding it difficult receive, try a test by manually tuning Mux Ch67, as its temporarily operating on that channel number until 14th of September.

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Freeview modes | Installing
Saturday 20 August 2011 9:17PM

Tim: Thanks for the update on the final situation and pleased to learn that all is now OK.

However on the subject of the booster, that's why I brought it into the equation emphasising about trying its power off test AFTER the picture went faulty, because trying the test whilst the picture was OK wouldn't really have shown any fault up as it was obviously working then, but if the same test was tried after the picture went downhill it wouldn't have made any difference by switching it off, this positively indicating the fault being associated with the booster circuit, which in this case was its power supply failing on a regular basis through thermal reasons, likely because of nightly heat build up in the loft.

Main thing is though that all is now OK!

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Lawrence: Well in November they should be going up from 4Kw to 100Kw after channels that would be presently affected on a distant transmitter are cleared.

You cant really get boosters that can do as you were enquiring about, and all I was really meaning was that its far easier to obtain a happy medium if the booster being used is variable.

I really don't think it worth the cost though, as any booster purchased is liable to become redundant come November.

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Lawrence: Just a point of clarification, the distance your various TV's are from the booster doesn't really come in to what I am referring to, which is trying to stop a powerful signal from overloading a set whilst at the same time not reducing other stations that are already weak.

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BBC One HD
Sunday 21 August 2011 8:16AM

Ricci: The spec I read on that model suggests that it cannot actually receive Freeview HD transmissions as the tuner is only shown as being a DVB-T type.

Have a check though on your user manual in the specifications section, as unless DVB-T2 is seen then it wont be able to receive HD, only showing HD images via an HDMI lead from some other device.

By the way, sets with DVB-T tuners will just ignore an HD signal whilst tuning, this making it appear as though nothing is there, HD from Belmont being on Mux Ch28 should you want to try a manual tune.

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aaron: Stamford is, and always has been, a relay of Waltham transmitting Central TV programmes.

What I suspect is misleading you is, that in areas North of the Welland that are climbing up slightly from the waterfront levels (Broad Street / West street upwards) generally has their aerials pointing at either Waltham or Sandy, and if its Sandy they will be pointing very roughly in the same direction as for the Stamford relay, albeit it requires the aerial to be mounted vertically.

The problem there is that when they retune their TV's / boxes on auto-tune their devices will lock onto the stations nearest to the start of the tuning point, which will be Sandy on high power Mux Ch27, whereas Stamford is Mux Ch47, and as such if actually picked up will be in the EPG 800 ranges.

The Sandy transmitter is reaching many places in Stamford that analogue didn't, and its most likely that which is misleading you.

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Tacolneston (East Anglia) transmitter Freeview retune
Sunday 21 August 2011 10:44AM
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Richard: Taking it that you are referring to EPG Ch50, try going into the signal check screen (condition on some Panasonics) and note what Mux channel number you see, as you might find its Mux Ch47 HD from Sudbury / Rouncefall, as according to my info HD isn't transmitted from Tacolneston until November 23rd.

(The trade reception predictor does though indicate HD from Sudbury/Rouncefall as being possible for your code area)


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aaron: Just to add, Anglia (Sandy) ITV being
on Mux Ch24 whereas Stamford is on Mux Ch41, likewise Anglia's HD service on Mux Ch21 and Stamford on Mux Ch44.

Anglia always taking up the EPG3 position (when received) over Stamford.

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Rhys brooks: This can be simply because no two brands of receivers are the same as far as sensitivity is concerned. It could also be made worse by the method used to provide the extra sockets, as they shouldn't really be looped in the same way ring mains power sockets are done unless in a strong signal area, even at that its much better for each socket to have exactly the same signal, meaning that they should be fed as individual outputs from a powered splitter.

Just to test if its is a sensitivity issue, try one of the problem sets on the living room socket, if its OK there then what I mentioned about a powered splitter is the only answer.

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BBC One HD
Sunday 21 August 2011 1:36PM

Ricci: Yes, quite correct, as I managed to have a look at the more detailed spec and it does indeed state what you have said.

And as previously mentioned give it a manual tune scan on Mux Ch28, but if still nothing try a signal strength/quality check on either Mux Ch22 or Mux Ch25 to see what is indicated, as both these transmitters are on the same power as the HD one on Mux Ch28.

Another aspect that has to be taken into account is regarding your aerial, should it be roof mounted coupled to a booster take the latter off, as your signal could be on the verges of blocking the tuner input, as I am aware that Belmont really blasts in on quite a number of locations in a line between Lincoln and Newark, (and further afield!) although whats said obviously only applying should HD still not work.

Looking forward to update on outcome!

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Don Greer: You don't really have anything to worry about except maybe that your still is still aligned properly, which it likely will be, as you just leave the extra lead uncoupled as it was possibly being used for a Sky+ set up where recording is involved.

All outputs on a dish LNB are independent of each other, so that they can be used for things such as viewing one channel whilst recording another etc.

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BBC One HD
Sunday 21 August 2011 4:18PM

Ricci: You can carry out a visual check on what station your aerial is directed at, as Belmont is at 52 degrees (19mls) - Waltham 202 degrees (28mls) - Lincoln Central 8 degrees (4mls), with the latter being a light Freeview transmitter (limited services) using Mux Ch's 44 (BBC1) - 41 (ITV1 etc) - 47 (HD service).

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BBC One HD
Sunday 21 August 2011 6:00PM

Ricci: I just noticed your 1:53PM report on the test carried out, this before your later 2:17PM posting that I replied to. (I really will have to scroll up the screen more often!!)

However, what you have said now makes me a bit suspicious as far as your sets capability to resolve HD transmissions is concerned, especially when it initially shows nearly full but immediately drops off, as that can indicate that the TV recognises that a signal is there but is unable to decode it, this irrespective of what the manual might state.

I intend to investigate this further as far as this model is concerned, because through experience I am well aware that some equipment although listed as being able to do whatever, still requires software updates to correct problems, something that "might" be applicable in your case.

Anyway, if magically it suddenly rectifies itself, (which I doubt) you could maybe post an update.

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terry: You are basically correct regarding having to wait until 21st of September, as although Litchfield is presently operating a temporary low power HD service on Mux Ch34 (@ 4Kw) its doubtful if you will receive it, as many cant.

That said though, the trade predictor does indicate that you can, so try a manual tune on Mux Ch34 and see what comes up.

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Diagnostics - old version
Sunday 21 August 2011 6:26PM

Paula: Sounds suspiciously as though your dish is slightly out of alignment, have a look at the signal strength / quality levels being shown by pressing "Services - 4 - 6", both indications should be reasonably level at about 75% of the scale.

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Mike: Lets hope you your outdoor aerial is about the minimum size you can get? as you are virtually under the umbrella of the Belmont transmitter, meaning that serious overloading problems could be well be occurring which could be desensitizing your equipments tuner.

If you have one about, try a set top aerial and see what happens.

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Diagnostics - old version
Sunday 21 August 2011 6:59PM

Paula Forgot to add, or that something is partially obstructing your dishes view, e.g: vegetation, trees, etc.

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Richard: Yes quite so! although somehow I thought you would report less than satisfactory reception, as predictors (even trade ones) are notoriously unreliable as far as their accuracy is concerned, this because of the number of local variables that nearly always exist.

Plus of course your aerial might not be even remotely in line with these other transmitters.

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Winter Hill (Bolton, England) transmitter
Sunday 21 August 2011 8:44PM

Andy: Well, what you are doing can be viewed as having similarities to someone using a metal coat hanger stuck into the back of a TV for reception when in a really good reception area.

The Pendle Forrest transmitter is the nearest to you at 3 miles away, Haslingden at 8 miles and Winter Hill on high power at 18 miles, so it has to be assumed that you must be in one of these areas where a pocket of intense signal is received otherwise what you are doing wouldn't work, because it technically shouldn't, maybe even a tad on the outrageous! (meant in the nicest possible way of course!)

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Winter Hill (Bolton, England) transmitter
Sunday 21 August 2011 9:22PM

Sue: Indications are that you should be able to receive Freeview at about the same strength of signal from three stations, namely Winter Hill - Storeton - Bidston, although another two could also come into the equation.

Humax boxes generally have very sensitive tuners and this could well cause great problems in your area when carrying out an auto-tune, as Storeton might take up EPG1 for BBC, and if not that station Bidston or Moel-Y-Park.

The only somewhat easy way to avoid this happening being to first of all blank the boxes memory store, this done by removing the aerial and carrying out a complete retune.

Once done, keep the aerial plug in your hand and carry out another auto-tune whilst carefully watching the progress indicator travelling up from the starting point, this being where you need to be quick, because as soon as the progress bar passes channel 52 immediately insert the aerial, and that should then enable the box to load Winter Hill, its lowest Mux channel being 54.

That said though, Storeton Wales might still cause a problem dependant on if its reaching you with any strength, as its on Mux Ch's 57 & 53 (HD on 60)

If you do not get any success then manually tuning (and storing) each Mux in turn is the only thing you can do, Mux channel numbers to use supplied if requested. Another way is if you could tune your box at a friends house who can maybe only receive Winter Hill due to their location.


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Pauline: If you are referring to Freeview boxes (Digi boxes usually a Sky box term) then what you see is suggestive of either the aerial being uncoupled somewhere along the line between you and the aerial, or that you are in an area where no reception is possible, and is something which cannot be verified one way or the other as no location (pref post code) was given.


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chris: Strange to say, but Portwood is not indicated on the trade reception predictor as being possible on your post code, albeit that in real terms it might well be.

I would concentrate on Winter Hill though, (@ 22miles) as that will provide you with the maximum range of services when compared to Portwood which is Freeview "light" transmitter, with limited ones.

(Moel-Y-Park is also shown as fully possible from 21st of September).

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chris: To add as it seems to have been cut off, Moel-Y-Park is also shown as fully possible from 21st of September.

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Switchover starts in the East Midlands
Monday 22 August 2011 12:33PM

Helen: The reason for your problem is highly suggestive of your box not being capable of operating on the new 8K mode that is being used ONLY on the BBC1 etc Mux transmitter.

The thing is, that if this is the cause of the problem then come the end of the month they will all vanish, as then the other channels also go over to the 8K operating mode, this affecting quite a number of older boxes.



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Dave Everitt: Not having mentioned your location seriously restricts on what can be checked on, but if the TV gets the channels OK on the same aerial? but the box doesn't, then this could possibly indicate that the box is not incompatible with new 8K transmission modes that are being used at switchover, of course should this have occurred?

The only other possibility is, that the signal is too strong and is blocking that particular box, but once again unable to verify unless location is known.

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Do I need to buy a booster? | Installing
Monday 22 August 2011 12:55PM

donny: Basically yes! although indications suggest that you should be able to get all channels at present, but predictors (even trade ones) can be far from being accurate as local problem spots cant really be catered for.

It would have been interesting to know what channels you cant get though! (just a few!)

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Ray: I had a look at the trade reception predictor for your P/code and to be quite honest about it what's seen does not look very promising, as only BBC1 (Mux Ch63) and Arq A (Mux ch68) are presently indicated as being possible for reliable(?) reception, the remainder in the "variable reception" category.

This situation should (in theory!) be rectified come the 23rd of November, as then all multiplex channels are shown as possible.



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Winter Hill (Bolton, England) transmitter
Monday 22 August 2011 4:51PM

Andy: Well you still amaze me with this! but having been involved with RF signals (TX/RX) for many years I am fully aware that areas do exist where touching an aerial socket with the proverbial wet finger can give quite unexpected results.

The only bit that gets me is, that the aforementioned unexpected results is usually when only the centre pin / wire is connected to the socket, whereas "if" your co-ax plug is connected properly that would effectively earth the screen around the inside core from picking up anything, the whole point of the outer screen, and I am quite sure that the LNB doesn't play any part in what you are receiving. (famous last words!)

Anyway, it still indicates that you are in a "chosen" spot for reception from Winter Hill @ 18 miles away, as the channels mentioned are from there, and so even although I would usually always advise satellite (Freesat) any day over terrestrial, satellite for 99.9% reliability of reception, in your case a standard log periodic aerial would likely give great results, a link for same provided. (any one of the three shown would suffice)

Of course it might just be easier (and less costly) just to replace the aerials co-ax.

Online TV FM DAB Aerial sales


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Mary: You can really up to a point adopt the same attitude with Freesat as you do with Sky, as Sky has one advantage over Freesat insomuch that you can use its RF output to feed a TV in another room, albeit watching the same programme, whereas Freesat boxes dont have built in RF modulators to do that.

But what you have said is correct.



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Freeview retune - the results | Switchovers
Monday 22 August 2011 9:06PM

marie: Yes, thanks for the update on the situation as its always interesting to know how people get on, plus of course its good for the reference book!

Quite a coincidence though regarding the store being the same one, I am sure that you appearing with a complaint associated with switchover re-tuning problems will really please them, not!!!

When I was on my travels to day I noticed that on Thursday Lidl's will be selling a 32" Freeview TV at £199.00, the problem is that although its boldly advertised as being "Full HD 1080p", unfortunately the spec doesn't back this up as it doesn't have an HD tuner, (which always states DVB-T2) this being something that is just guaranteed to be the causing them some real headaches! (I tipped the manager off though, but whether he will take any notice is anyone's guess!)

This being the kind of thing that catches many people out, between HD that's not, and 8k that isn't quite, the latter which "might" be partially responsible for your TV problem dependant on whether or not you are in a location where channel changes plus power increases have taken place, as if they have then its liable to be problem associated with 8k incompatibility rather than just a simple memory failure.

Although that's neither here nor there, as its faulty.

Keep me posted!

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terry: Thanks for the update, which has somewhat confirmed what I suspected, as many complain of poor signals on Mux Ch34. (not necessarily all on this site either)

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Winter Hill (Bolton, England) transmitter
Monday 22 August 2011 9:24PM

Andy: Well for reliability of reception it goes without question that Satellite is a better bet altogether, albeit of course its not near so convenient as Freeview as far as using in more than one room is concerned, both Freesat and Freeview having the same HD channels though.

Of course it all depends on whether or not your TV is capable of showing HD images via an HDMI lead?



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rickety: You could be as near as 12 miles from Sandy Heath, and as such be suffering from signal overloading problems as Panasonic tuners are very sensitive.

You haven't mentioned anything about your aerial, but should you have any type of booster fitted you must remove it, however if you don't, then you will likely have to purchase a simple attenuator to insert between your aerial connection and the TV socket. (attenuators only being a few pounds)

Maybe you could mention what model of Panasonic your TV is?

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Do I need to buy a booster? | Installing
Tuesday 23 August 2011 7:42AM

donny: Sorry for not getting back quicker, but yes, you could give that a try, although sometimes its best to scan first without the aerial connected so that you are starting off with a fresh memory, then re-connecting the aerial and carrying out a dedicated channel scan on the Mux transmitter you have problems with, as if you receive what you want you can then just add to it. (dependant on the facilities offered on your particular devices tuner, as some are very basic)

Remember though, and as you may well have read anyway, that Mux Ch66 & Ch68 are reported as being very weak in certain areas, including ones that can actually see the transmitter.

Would appreciate an update on what you find.


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Adam B /rickety : Yes, spot on, as I just managed to "check the spec" on the manual this morning.

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David: No two brands of sets have tuners with exactly the same sensitivity with Panasonic being one of the best, this being the most likely reason why you find that it works OK.

If a low signal is the cause of the problem, then the Samsung should be able to do likewise if a booster is fitted in line with its aerial socket.

Maybe though before you do anything you could carry out a signal level / quality check on the Panasonic (accessed via tuning menu) whilst its on ITV, giving an update on what's indicated. (Crystal Palace ITV on Mux Ch22)


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Emley Moor (Kirklees, England) transmitter
Wednesday 24 August 2011 7:42AM

Thomas: Its most likely that it would be superfluous to your requirements when Emley Moor goes over to high power operation, however unless its easy to access I wouldn't really let it bother you, as should it be found that signal overload problems were happening on any of your TV's / boxes causing either permanent or intermittent blocking of the signal, then simple attenuators could be fitted in line with each of their aerial sockets.

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emma williams: Indications are that you should have good reception from the Nottingham transmitter at 2 miles away, that is if your aerial was directed at this transmitter and not Waltham.

You problem could be caused by when the re-tuning operation was carried out your box having locked onto and stored BBC (and possibly others) from Belmont (now on high power Mux Ch22) rather than Nottingham (Mux Ch27) with the only way to get over this being for you to carry out a manual tune.

First though, have a look in the 800 ranges of channels and you might see your local BBC up there, if it is then a manual scan is the only cure, info on procedure supplied if requested.

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Emley Moor (Kirklees, England) transmitter
Wednesday 24 August 2011 11:13AM

Mike Dimmick: Well maybe in theory there is a remote possibility that this could happen, theory and practice sometimes being quite remote from each other when dealing with RF where elements of trial and error are never far away, especially in anything domestic!

However in practical terms, at 18 miles away from the transmitter this is unlikely to happen in the same way is it possibly could in a TV's or boxes tuner where oscillator circuitry is involved, and so as far as I am concerned could be discounted.

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sarah: Yes! the latter, as the magic eye doesnt give you any more channels that you already have, its just simply a way of being able to change the Sky boxes channel without actually being in the same room as the box.

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Grumpyoldman: I really don't think it would make much difference if Terry did try moving his aerial, as the Litchfield transmitter is only approx 4 miles away to the North East of Sutton Coldfield, this only requiring his aerial to have a "very" minor nudge to the right of where presently positioned.

Or put another way, for normal purposes if Litchfield was transmitting on a bit higher power, both it and Sutton could be picked up on just about the same angle from Terry's location.

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terry: Just noticed that you had replied to Grumpyoldman!

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ITV 4
Thursday 25 August 2011 7:55AM

Mark Bateman: If receiving from Waltham then ITV4 (MuxD/ArqB) is presently showing as being poor, however this should improve on switchover (31st Aug) when its present Ch42 changes to Ch57.

Its also noticed that MuxA (Ch29) will remain in the poor category until 12th of October, although this is not shown as being presently possible for reception anyway.

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robert binstead: Just to add to what Briantist has said, you might have to manually tune in Olivers Mount multiplexes, as your other possibilities for reception (Bilsdale and Hunmanby) are all on lower Mux channels numbers.

Olivers Mount using - Mux Ch's 57 - 60 - 53 - 54 - 58 - 61 (Ch57 and 54 showing as variable)

Your aerial will also require to be turned slightly clockwise, as Bilsdale is at 285 degrees, Olivers Mount at 309 degrees. (using Filey post office as a marker)

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mr b smith: If you are referring to a Panasonic analogue device then BBC2 ceased transmission on the 17th, as indeed will the remainder of the analogue channels on the 31st Aug.

If you still wish to use your VCR after then then it will have to be purely via its scart connection into a Freeview box.

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Stephen F: As your BT vision box is first in line from the aerial and as such receiving the maximum signal, then the symptoms you are getting could possibly be caused by an over strong signal that's swamping the tuner, especially if you are using a roof aerial, or worse if a booster is also involved, if this applies then it should be removed, but if the signal is too strong then a simple attenuator in line with the aerial socket should cure that.

Purely for a test, if you have access to a set top aerial give that a try, as although the picture (should one be there!) might well be poor it would be interesting to know if the type of interference seen was still in evidence or not.

Regarding the TV being OK but the box not, no two tuners are the same in sensitivity nor their ability in coping with over strong signals.

(Is the BT vision box a grey or black type?).

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Stephen F: Meant also to say, try leaving the co-ax link from the BT box to your TV disconnected.

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David: These signal test indications aren't really that good considering they are been seen on a Panasonic, most of usually indicating more than on anything else, so your problem is suggestive of the signal being a bit on the weak side, albeit of course that the reception predictor (as usual!) does give glowing reports for reception at your location.

If your roof aerial is in order then a booster would help the situation, these obtainable from as you mention Maplins, although numerous choices can be found on e-bay, one example seen on the link.

By the way HD is on Mux Ch31, but could you indicate the model of your TV, this to enable its tuner spec to be checked on.

2 Way TV Aerial Signal Booster Amplifier Freeview | eBay



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David: This is another one that I can actually recommend for reliability, its four way but you could just leave two of the outputs unconnected, irrespective of what the purists would maintain.

4 Way TV Aerial Distribution Amplifier/Booster Splitter | eBay pt=UK_ConEle_SatCableFreeview_RL&hash=item35ae216caf

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David: Just had a look at the spec and it would appear as though it does have a Freeview HD compatible tuner fitted, this being DVB-T2.

It wouldn't do any harm though for you to check your user manual / tuner details for DVB-T2 being seen, as even some quite sophisticated TV's with Freesat HD etc doesnt have an HD capability on Freeview.

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Stephen F: Yes the black one is a later type, the only reason I asked about the colour was that its rumoured (unable to check for myself) is that the older type you have is fitted with an RF modulator whereas the later black ones doesn't, not of course that this would be liable to cause the problem you are experiencing, as it would be the TV that would suffer.

However, if you have now tried a set top aerial and the problem still exists, then there is only about one thing left that I suspect could be responsible, that of the BT vision box not being fully compatible with the new 8k transmission mode that is now in use.

I have had a look at the spec and it does state that its 2K/8K compatible, though experience has proven that this is not always the case in various pieces of equipment. A test you could try for this being, blanking out the channels stored on your BT box by scanning without the aerial being connected, then to manually tune in Mux Ch49, as MuxA/SDN is the only channel that's shown as still being on 2K operation, so it would be interesting to know if this one works OK, if you can receive it that is, as its shown on the predictor as being variable. (Ch49 as) 

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Stephen F: "If" it has that facility then it should be seen within the tuning menu selections, but not being acquaint with that particular box I appreciate that it might not offer this facility, if it doesn't then you will have to carry out the normal re-tuning then try tests on ITV3 or QVC, as these are on Mux Ch49.

A thing you might be able to do though is, if during re-tuning you can see the tuning bar running up the screen then leave the aerial unconnected until about Mux Ch45 then quickly plug it back in again, as that will miss most of the higher powered channels with the exception of the HD one, which shouldn't register anyway.

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Stephen F: But that's the very point I am making, being, that your box doesn't show any interference when receiving channels from the Mux still on the original 2k operating mode, whereas it does with channels which are on a Mux now operating on the 8K mode, such as the BBC and Ch5 etc.

8K is known to cause a variety of problems on some older equipment, these ranging from either not working at all to erratic performance if it does, so I only take account of the programme channels you mention to cross check them with the technicalities of the multiplex they are on.

The main other possibility for the problem, that of the signal being too strong, has already been discounted when you tried the set top aerial, this only leaving the possibility of 8K incompatibility as the main suspect, that is unless your box has developed some other odd fault, which I doubt it has. Local interference also being excluded as your TV works perfectly OK on the same aerial.

In other words, "you" would have discounted the 8K problem theory if you had seen the same type of interference on programmes using Mux Ch49, which you say you haven't done.

Needless to say "if" 8k is indeed the cause then you cannot really do anything about it, as its a software issue.

PS: Just spotted your latest posting when I scrolled up the screen. Although these can cause problems, however you having witnessed the interference using a set top aerial means that the problem is nothing connected to the aerial system.


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Michael: "If" you are referring to a Satellite Freesat box then you have to carry out a factory reset and enter your post code, as this instructs the box to store the signal info appropriate to your area.

Although I doubt if this is what you are meaning, but if its a Sky box complete with viewing card then the card cannot be used, as the region info on the card cannot be altered by anyone other than Sky, although using it without the card usually gives the London region as default.



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Offbeat Dave: Well Mux Ch53 does indicate variable reception at your location although Mux Ch60 shows as being reasonably OK, of course this taken with the usual pinch of salt as predictors cannot accurately cater for local variables.

Come the 23rd of November though these problems should vanish.



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Chris Low: If you can receive Freeview perfectly OK on the Panasonic but not on the new Samsung (on the same aerial) then a simple booster is all that should be necessary to correct this, as changing your aerial would be like taking a sledge hammer to crack a nut, to use the expression!

Have a look on e-bay under "TV amplifiers" or "boosters", something shown as about 10db gain would suffice so long as its shown as having two outlets, one lead to each device.

(Maybe you could indicate the model number of your new purchase)

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Chris Low: You should also be aware that Mux 1/2 (BBC & ITV) presently indicate as being variable in reception at your location, and with this continuing until April 18th next year, so even although taking the predictors element of inaccuracy into account good reception isn't guaranteed on these two multiplex channels no matter what you might do.

That said though, the booster I mentioned should certainly get over the problem you mentioned "if" its caused by a signal just under its receiving threshold, although I am a bit suspicious of you not getting anything and that's why I requested its model number.

Just for a matter of interest, boosters are generally always better as near to the aerial as you can get them "if" excessively long downleads are involved, (loft mounting perfectly OK though) although based on what you report anywhere in the vicinity of the TV or PVR being used should be OK if a weak signal is the reason for your problem, and not caused by a fault in your new purchase.


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Lawrence: Taking it you are referring to a "powered" 4way splitter then yes! as it doesnt matter how many points you add, this so long as they aren't made by looping from one point to the other and kept as individual feeds from the splitter.

So you should have no problems with what you are suggesting.

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Lawrence: Meant also to add, that if you are presently not experiencing any problems with the main Mux channels already on high power then you likewise won't on November, should however you do at any time then a simple attenuator in line with the "input" to your splitter will instantly cure the problem.

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Mike Dimmick: Don't you really think that db levels and insertion losses etc, especially when elements of the theoretical coupled to variables are involved, nothing being exact, are more appropriate to "some" on MB21 rather than a site where people of basically a non technical nature are seeking assistance without wishing to be baffled by science.

(My self also being a member of aforementioned site albeit wearing a different hat, that is as well as generally being in the background)

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Mike Dimmick: Yes, but these loses you refer to have elements of "in theory" attached to them, as it all depends on whether or not every additional point installed is actually loaded up by something being plugged into them, and if something should be then what the device actually represents impedance loading wise on the circuit, considering that is we are not dealing with professional spec equipment and so nothing can be taken as exact, as indeed nothing can when dealing with anything connected with RF signals, as assumptions are frequently the order of the day!

Or in other words, in practice, Lawrence would not notice one iota of a difference in the signal received if done via a four or six way splitter, unless maybe rather than looking at it on the TV he was observing the level on a good db meter where small variations of signal level would be noticed.

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BBC Trust on Freesat | Freesat
Friday 26 August 2011 8:22PM

Mel Bruce: I find it a bit strange that your elderly father was set up with a Sky dish rather than a Freesat one in the first place, however as far as the problem is concerned its suggests that its the box at fault, so did you try re-setting it by removing the mains power to it, waiting about 10 secs or so before reconnecting, then after it starts to respond to the remote control when Sky is pressed letting it go through its usual "searching for listings" procedure.

A Freesat box works on the same dish as a Sky one, as there is no difference between the two as far as that side of things is concerned, and unless something has been added to the shed to obstruct the dish view to the satellite then nothing will have changed.

Satellite reception can be had anywhere in the UK provided the dish can view South and not into a "tall" obstruction like a tree or close by high rise building etc.

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Sally: The magic eyes are purely Sky box devices and cant in any way be used to control anything else.

If you are saying that the magic eyes do not work now, I am assuming that you have been trying to use the Sky boxes RF output into the Freeview box, then the problem is likely because you are killing to magic eyes power supply by connecting the Freeview box into one of the leads from the Sky box without the use of a two way powered splitter in one of the TV's leads "after" the magic eye, (between the magic eye and the TV) the lead that went into the TV now going into the splitters input, and one of the splitters outputs going to the same TV, with the No2 output going into the Freeview boxes aerial socket, the Freeview box being coupled to the TV via a scart lead.

You have to ensure that the Sky boxes RF2 output is not clashing with any of the Freeview channels in use, but unable to advise on what channels to use as your location (post code) is unknown.

You could of course use the old TV to also view the Sky channels via its aerial socket, and to that you would link the old TV's aerial socket into the Freeview boxes RF output socket, making sure that the said boxes RF modulator is not clashing with anything else, these being the Sky boxes RF output or any Freeview channels.


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Sally: Should have also mentioned, or you could just plug one of the leads used "from" the magic eye to the TV into the Freeview box rather than the TV, then use a jumper from the Freeview boxes RF output into the TV's aerial socket, scrapping the powered splitter suggestion.

The main thing is, always watch to see that you aren't killing the magic eyes power supply when connecting anything, as if you are then the magic eyes red light will go out.

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Mark Anderson: The ITV4 programme you cannot receive is on Mux Ch55, so you should try a manual tune on that to see if anything shows listed during the scan, or indeed if you can see anything indicated at all on the signal strength / quality bar when you select that channel to scan.

If nothing, I would try and check with neighbours on the same aerial system to see if they are having any problems, this just in case the problem is with the distribution system.

It should be said that come the 21st of September when switchover stage 2 takes place, that channel will be changing to Mux Ch39 as well as its power increasing, but indications are that you should be presently receiving it.

Anyway try a scan etc as suggested, giving an update on the result.

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graham campbell: Well what both Sony and the DVD supplier have said is quite correct, as they aren't responsible for you receiving a poor signal, this aspect of reception possibilities unable to be checked on as you havent mentioned where you are located (pref:post code) nor anything about your aerial being used, such as loft or roof mounted, or maybe even on a communal system.


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graham campbell: Apologies, just noticed that you did state that your aerial was on the chimney, if you indicate your location the signal expected at your location can then be checked on.

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Robert: Just out of interest I was checking your various postings, and on Dec 11th 2010 @ 07:11PM you stated that the aerial that was affected worst was the one that was the highest mounted.

I found you comment interesting, as this is why that in difficult reception areas where distance is not the cause of the problem I always advocate that the usual rule of "highest is best with the largest dB gain aerial possible" being mounted on the chimney stack does most definitely not apply, as the best signal is often found a few feet away from the stack or even much lower down altogether, this obviously not being terribly convenient for the person installing the aerial as well as it being a time consuming task to arrange, if at all possible!

This is where aerials such as amplified logs score every time over large pieces of metal work mounted on high poles, as if the best signal is found to be lower down at about loft level, then aerials such as mentioned mounted in the loft are much better by being easier to move around to obtain the exact "chosen spot".

Gutter mounting of these type of aerials getting over the occasionally experienced problem of the signal being degraded somewhat by certain types of wet roof tiles, or even snow, although when they are loft mounted facing into a gable end (TX direction permitting) then they don't suffer in the same way as they possibly can when facing through sloping roof tiles.

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Kathryn: Without knowing the full post code its a bit difficult to assess where you are receiving your signal from, as indications are that you can get first class reception from either Emley Moor or your local Sheffield transmitter, the latter showing "0" distance on an S10 code, but whether or not that is where you are receiving your signal from isn't for certain.

To check on this, if you carry out a signal check on BBC1 Emley would be Mux Ch52 with its HD Mux being on Ch39, whereas Sheffield BBC1 is Mux Ch27 and its HD Mux being Ch21.

If you hadn't have previously had HD reception I would have been suspicious about the capabilities of your TV, but if its manual states in the tuner spec section DVB-T2 capable, then that can be excluded.

The other great possibility is that the signal is too strong, so "if" you have a set top aerial around carry out a re-tune with that temporarily installed, of course trying it out beforehand to make sure you can actually get BBC1 / ITV etc using it, if HD is received via the set top then you will have to purchase a simple attenuator to place in line with your aerial socket.


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Mrs Friel: Anyone living in Market Rasen is virtually underneath the umbrella of the Belmont mast, and as such liable to be receiving an exceptionally strong signal to the extent of it verging on blocking a sensitive sets tuner.

If you have a set top aerial around try using that to see if that cures the problem, if it does then you will require to purchase a simple attenuator to place in line with your aerial socket.

By the way you should give the set another re-tune with (if available) the set top aerial, this just in case anything was corrupted on the previous re-tune by the signal strength being received on your normal aerial.

(Wouldn't go amiss just to carry out a factory re-tune)


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J
Sheffield (Sheffield, England) Full Freeview transmitter
Saturday 27 August 2011 9:18PM
Sheffield

Kathryn: Just a further bit of info regarding your reception. It seems to be that the further along Crookes you travel the better the reception gets, as a test code of S10 1UA (15 Crookes) gave Emley reception as only being possible on three Mux channels, whereas moving upwards along Crookes through codes of 1UD (181 Crookes) showed 4 Mux channels as good with two zero, then from 214 - 257 Crookes (codes 1TG / 1TE and 1TF) revealed perfect reception being indicated from all six multiplex channels.

So as you will see what you receive very much depends on where you are located within relatively short distances, although no matter where it might be reception is always indicated as being good from the Sheffield transmitter, so try a test using manual tuning on the Sheffield HD Mux channel mentioned, that being Ch21.

That said though, "if" your aerial has been set up for Emley then it will be pointing a little too much to the North at about 337 degrees, whereas using all of Crookes as a reference it should be from 208 / 247 degrees for Sheffield, so with the possibility of the direction angle being out coupled to the polarity (V /H)) being wrong then this would have a negative effect on your signal strength received from Sheffield, but one never knows at such as close range, as these errors have much less of an effect as such.

By the way Emley Moor HD on Mux Ch39 is on low power until September 21st, so even although it does show as being good (reasonably anyway) for reception on a number of test codes, I wouldn't really have too much faith in it.


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Diagnostics - old version
Saturday 27 August 2011 9:31PM

caroline: Giving a clue as to your location (pref post code) would be of considerable assistance, as nothing can be checked regarding the signal you should be receiving without this info.

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Kathryn: Just carried out a check using the post code you provided, indications being that of superior reception being possible to anything previous seen with any of the other codes, this being a good thing in one respect but problem causing in another if tuning using auto-tune, the reason for this being that Belmont now comes into the equation.

The problem is that auto-tuning always starts scanning from the bottom of the entire channel range, slowly travelling upwards locking onto each Mux channel found and storing the programmes from it, then once done travelling on to the next doing likewise on so on. Because you appear to be able to receive Sheffield, Emley Moor, Belmont and possibly two others, this means that when carrying out an auto-tune your TV is liable to store the odd Mux channel from anyone of these other stations if its Mux channel is strong enough for the box to lock onto, storing the stations from it rather than just keeping on the station that you require, being Sheffield.

Lots of people get this problem, although some sets have the option on their tuning menu of being able to select scanning a particular area, but this can be iffy in practice and not always as good as it might appear, so its always best to carry out manual tuning in these circumstances, starting with say BBC1 and using the add channels facility for each additional Mux Channel of the station required.

In your case Sheffield uses Mux Ch's 27 - 24 - 21 - 42 - 45 - 63.

As far as HD is concerned, you might well have possibly been receiving HD from Emley, but for some reason or another it dropped out for a short spell and you just haven't managed to recover it as yet during auto-tuning, possibly because of its lower power not proving enough signal for your TV to lock onto, especially "if" your aerial is pointing at Sheffield.

Anyway, if you see "Set up" on your menu that's where you will (or should) see the options for tuning, that said though, I am aware that some boxes do not allow manual tuning, but best try and find your user manual.

Maybe you could indicate the model number of TV you have.



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Diagnostics - old version
Sunday 28 August 2011 8:50AM

caroline: Your post code indicates reception being possible from either Melling(@ 2 miles)or Lancaster(@ 7 miles), Melling being a freeview "light" service meaning limited channels being available, so the full service from Lancaster is your best bet "if" actually receivable, albeit the reception predictor does indicate that it is.

I cant see anything shown engineering wise on these stations so I would have another try at re-tuning, preferable a factory re-tune to blank out anything stored, or just remove the aerial and carry out the first scan without it, that having the same effect of blanking the memory, then replace the aerial plug and re-tune as normal.



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Kathryn: Just a little addition, as HD was your main issue I would concentrate on trying manual tuning purely on the HD Mux channels, storing anything received.

This can be done without scrubbing anything already stored using the "add channels" facility in your tuning menu.

Sheffield HD - Mux Ch21 / Emley Moor HD - Mux Ch39 / Belmont HD - Mux Ch28.

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DavidHufton: But they dont share the same multiplex and thats why the signal strengths can be different, normal main stations using 6 multiplexes with two of them being BBC and the rest commercial concerns.

Freeview "light" stations having limited services because only three multiplexes are involved, two of them used by the BBC, with one being for HD transmissions.

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Feedback | Feedback
Monday 29 August 2011 7:46AM

Mary: As the question is based on reception then for any accuracy your location really has to be known, however in general terms the fact of you being at the 6th floor level puts you at a decided advantage, and so in theory an indoor aerial should work provided the window near to it is facing very roughly in the same direction of the transmitter, so have a look and see what direction any aerials located nearby are facing.

Trial and error usually always applies using these type of aerials, as so many variables attached to positioning applies.

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DavidHufton: Or can I put it another way David, if two different signal strengths are seen on what you are looking at then you are comparing two different multiplex transmitters, so rather than just looking at the signal strengths also look at the multiplex channel numbers (not EPG programme ones) associated with them.



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Freeview retune - the results | Switchovers
Monday 29 August 2011 8:49PM

marie: Thanks for the update Marie and really pleased to hear your good news, something I am certain Tesco likewise will be on receiving your e-mail. Needless to say I feel that the manual will be treasured from now on, just in case!!

Best Regards / jb

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DavidHufton: Are you absolutely positive that your TV / box is picking up BBC from Chesterfield (Mux Ch26) and not Belmont (Mux Ch22) as that is shown on the reception predictor as being very possible at the post code given.

The only reason I mention this is, because its a very common thing to happen when auto-tuning a TV in any area where signals can be received from more that one station, as the receiving device generally locks onto the first Mux channel it finds. (if strong enough!)

Try a signal check to see what Mux channel is shown.

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Richard S: I would try a test by connecting one of the TV's that presently isn't picking up PSB2 (ITV1 etc) whilst on the outdoor aerial over onto the indoor aerial, then after having blanking out the channels already stored on it, done by removing the aerial and carrying out a scan without it, and then carrying out the second scan after having reconnecting it.

If by doing that you see that ITV1 etc has returned, then that's liable to indicate that the signal received in its other position from the outdoor aerial is slightly too strong on that particular Mux channel and is blocking the tuner, this requiring a simple attenuator to be placed in line with the TV, that is unless your distribution amp is one of the variable types.

The second part of the test being, that if you now find that COM3 (ArqB Mux Ch40) has vanished then that's because it is only transmitting on low power until October 12th and the indoor aerial isnt picking it up properly because of this.

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Richard S: Just in addition to what I mentioned. If the results of the test turn out as was suggested, when you then return the TV back to its original position do NOT carry out a re-scan as you will already know that ITV1 etc is stored in its memory, and indeed because of this it "might" work, however if not then you know it will again as soon as you take measures to slightly reduce the signal.

As COM3 (ArqB) will obviously not be there just add it by using the "add channels" facility on the TV, as that wont scrub whats already stored.

You have to always remember that unless TV etc are all of the same brand their sensitivities can be totally different, this why some will work and others not even although on the same aerial.

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Richard S: I think I may well have misinterpreted what you were meaning in your original posting, insomuch that when you mentioned the TV's on the loft aerial couldn't get COM3, I didn't realise that this was in "addition" to them not receiving PSB2 either, as I assumed it was only COM3 that was the problem on these sets. Anyway the test you carried out of by-passing the distribution amplifier proved interesting by this action having enabled you to receive PSB2, as that could indicate the signal is indeed possibly over powerful, however the puzzling bit of this being, that if it was powerful then I would have expected that the TV's on the loft aerial should have been able to receive PSB2, the fact that they don't suggests that some other factor must be in existence, what Mux Ch23 signal level is shown on them?

I have to say though, that the reception predictor on the post code provided indicates your position as being able to receive from a number of sources, namely Hasland as well as Belmont, although these being indicated as less than the 100% rating seen from Chesterfield on Mux Ch's 26 - 23 - 29 (HD service), although SDN (Mux Ch43) - ArqA (Mux Ch46) - ArqB (Mux Ch40) are all listed as being variable (as you are experiencing) this improving slightly by coming out of variable on Sep11th, then being fully OK from the12th of October.

I would like though if you could try a Mux channel check on a TV that is connected to "each" aerial, the channels to use being Mux Ch25 and Mux Ch60, these corresponding to Belmont and Hasland's PSB2.

Regarding the distribution amp in the loft what model is it?


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Richard S: Another addition, could you also verify that the Mux channel numbers in question are actually being seen as these numbers whilst on the signal checking screen, and not just being referred to from the transmitter list.

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John hewitt: Stamford is a Freeview "light" transmitter and as such only provides PSB multiplexes, these being Mux Ch47 (BBC) - Mux Ch41 (ITV) and Mux Ch44 (HD service)

It should be said though, that Waltham (or even Belmont) reception is possible in "some" spots within area's where Stamford would have been the only station expected to be received.
(Ch47 BB) 

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DavidHufton: Re your 3:25pm query yesterday, yes! its almost certain that the two Mux's referred to are from Hasland, although the BBC one you didn't want (Mux Ch57) may well now be found stored somewhere up in the 800 ranges.

Its possible that the Humax did reject Mux Ch26 during auto-tuning "if" its been slightly too powerful, so your action of manually tuning it is the correct procedure, as tuners (some anyway) are more likely to respond better to a fixed command, this also applying in reverse situations where signals might be a bit on the weak side.

This kind of problem is already widespread across many areas, and wont really calm down until the switchover process has finally been completed, unless that is someone is purchasing a new set that doesn't have area selection facilities attached to the tuning menu, as dependant on location, they might also have to carry out manual tuning to obtain the correct Mux channels for their area.

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Chrissy: There is a trick method you could try to eliminate stations other than Waltham from being received during an auto-tune.

What you do is first of all take out the aerial and carry out a re-scan without it, this for purposes of blanking out anything stored, then you carry out a second re-scan whilst carefully watching as the progress indicator starts to creep (hopefully!) along the indicator bar, then as soon as it passes about Mux Ch50 immediately replace the aerial lead and let it scan the rest of the way. This procedure allowing only channels above Mux Ch50 to be received, which applies to all of Waltham's multiplexes anyway except one, namely Mux Ch29 ITV3 / QVC etc.

Of course the point is that you might not actually get this in the first place, as its on low power until the 12th of October.

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Chrissy: Just to emphasise, after the first re-scan do NOT replace the aerial until the position mentioned, that being Mux Ch50 or immediately just after, as you want to catch Walthams ITV1 etc on Mux Ch54, the remainder being Mux Ch's 56 - 57 - 58 - 61.

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Doug B: Just purely for information purposes, reception of MuxA/SDN (Ch31) is indicated on the trade predictor as being poor at the location given, with this state continuing right through until April 2012 when it then picks up until sometime after June, as then its forecast as dropping back off into the variable category as far ahead as 2013.

Predictors (even trade ones) cannot ever be 100% accurate as they cannot fully cater for local conditions, but Mux A certainly doesn't look promising as its only this Mux on its own that stands out as being unreliable.

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Diagnostics - old version
Thursday 1 September 2011 1:06PM

raymond Bell: Many people living in areas where both stations can be picked up experience this problem, and unless your box has a region selection facility in the tuning menu then the only way of avoiding this is to first of all blank out everything stored in the memory, this done by carrying out a re-scan without the aerial being connected, then once done re-connected the aerial and manually tune in the channels required using the add channels facility.

Waltham being Mux Ch's 29 - 54 - 56 - 57 - 58 - 61.

(Note: Ch 29 is presently on low power)


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Sue: I take it that you are scanning the TV whilst the TV in question is set on analogue and not digital?

If you have then whats been said does obviously not apply, so do you get a picture without the magic eye in line? that is with the co-ax straight into the TV, although to do this test use the Sky boxes RF1 output to avoid the possibility of the TV shorting out the magic eye's voltage, as that can happen with some TV's.

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jg: In your particular location it will nearly be impossible to receive Waltham without doing so by manually tuning in the various Mux channels involved, that is unless your TV has a "region" facility within its tuning menu, if it has have you tried using that?

The reason for your problem being that its likely you are picking up Sutton Coldfield on some channels and Waltham on others, as Sutton is shown as being not too far off the same reception level as Waltham.

To manually select the channels you first of all blank out everything stored in the memory, this done by carrying out a re-scan without the aerial being connected, then once done re-connect the aerial and manually tune in the channels required using the add channels facility, storing what's received if not done automatically by the set.

Waltham's Mux channels being: 29 - 54 - 56 - 57 - 58 - 61.

(Note: Ch 29 is presently on low power)


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Switchover starts in the East Midlands
Thursday 1 September 2011 5:35PM

David: Have you actually tried manually tuning in Waltham HD on Mux Ch58? as I don't see you having mentioned this.

Best though if you bank out everything stored in the memory first, this done by carrying out a re-scan with the aerial disconnected, as if you then manually tune as suggested it will be the only station in the box so cant get mixed up with anything else.

If by any chance nothing comes in, then have a look at what the signal level is showing as, this observed via the tuning menu.

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Switchover starts in the East Midlands
Thursday 1 September 2011 8:42PM

Charles Fox: I just rigged a test aerial up facing Waltham and can confirm that HD is definitely perfectly OK on Mux Ch58, so I am inclined to agree with KB as regards to an over powerful signal being your problem, as a 100% indication of strength coupled to no quality being shown is a classic sign of this occurring.

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Switchover starts in the East Midlands
Thursday 1 September 2011 8:52PM

David: As you may have noticed on my reply to Charles Fox I can confirm that Walthams HD service on Mux Ch58 is OK. Regarding your LNA (Ch48)= ON, I am afraid you have got me stumped there unless its something connected to a setting on your receiving equipment, so maybe you could give some info on what you are using, as I forgot to request this info on my 5.35PM posting. (brand / model)

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Diagnostics - old version
Thursday 1 September 2011 9:44PM

Alice: Your area of Peterborough can receive Freeview from either Waltham or Sandy (Anglia) although Waltham is possibly the better of the two although both are transmitting as normal.

What you say can indicate that something has came adrift with your aerial connection, so you should temporarily move the box to another position and give it a try there, if it doesnt work then it could be the box at fault.

Have you tried unplugging it from the mains for about a minute before re-powering it again?




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Ivan Dilks According to the specifications I have seen that model does not have a DVB-T2 tuner and as such is only an HD ready set, in other words can display HD via an external HD box.

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Switchover starts in the East Midlands
Friday 2 September 2011 7:32AM

kB Aerials Sheffield: Yes, you are quite correct on that Keith, and I likewise had similar thoughts to yourself about mentioning the fact in case it was something ridiculously simple, the point that got me though was where the Ch48 came into the equation? as it was Ch58 that David was supposed to be scanning. (Could have been a typo though!)

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Dominic Payer: I suspect that you are mixing up EPG numbers with actual multiplex transmitter ones, as there is only one MUX (not an EPG number) channel on low power on Waltham and thats Mux Ch29 (ITV3/QVC etc) MUX Ch58 is the HD channel as I receive it on one of my sets.

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kB Aerials Sheffield: Yes I noticed that Ivan had referred to that number as being a Hitachi device, but according to my info there isnt one, so what I mentioned regarding the tuner (not DVB-T2) was referring to Toshiba.

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Keith G: Yes! as DVB-T cannot receive Freeview HD.

In your area you might require to manually tune in Waltham channels if your TV / box does not have a regional scan facility, although the predictor does indicate first class reception being possible from Waltham, that said I would exclude Mux Ch29 as thats on low power until October 12th.

Walthams Mux Ch's 29(SDN) - 54(ITV1 etc) - 56(ArqA) - 57(ArqB) - 58(HD) - 61(BBC1 etc)

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Keith G: And just to add to above, before trying a manual tune, first of all blanking off anything stored in the memory by carrying out a complete re-scan without the aerial being connected.

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Switchover starts in the East Midlands
Friday 2 September 2011 4:43PM

Mike Dimmick: Well I just look at that facility being offered on a household TV as a fancy form of built in booster and as such an unnecessary expense, as far more people do not require the use of one than those in difficult reception areas that does, although admittedly by it being built in the noise level etc is liable to be more controlled than from an external device.

What I do wish though is, that more sets were fitted with switchable aerial powering facilities, as this would eliminate the necessity of an aerial amplifiers (masthead or otherwise) power supply unit using up a power socket as well intercepting an otherwise tidy downlead, this facility being considerably less technical or as expensive to build in over that of a low noise RF amp, something more associated with a communications receiver anyway rather than a Freeview device, although obviously being given the title of an LNA by this manufacturer.

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QVC
Friday 2 September 2011 4:56PM

Terrance Ferri: Stating your location would have been of assistance as what you mention is totally dependant on your area.

But its not just QVC that's involved as its also ITV3 / CITV / 5USA and everything on that particular multiplex channel "if" its transmitting on lower power than the other multiplexes, as applies in my own particular case with Waltham, one of the two stations I use for reception.

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Ivan Dilks: Thanks for the update on the situation, its unfortunate about your set but I can assure you that you are not by any means alone by being caught out by misleading descriptions being given, as I can see them virtually any time that I take a stroll around TV showrooms, even I have to occasionally scrutinise what I might be looking at as its not always immediately obvious whether a device can receive HD or not.

My advice to anyone is to get a cast iron guarantee from someone in authority that a device can receive what's desired, or ask to look at the spec in the user manual, DVB-T2 for Freeview HD or DVB-S2 for Freesat HD.

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Digital switch-over problems | Switchovers
Friday 2 September 2011 5:21PM

Clive Doody: Nice to see you can resist the temptation and save yourself a major inconvenience! However this should be indicated somewhere within the set up menu under maybe "automatic up-date" warnings or whatever, the actual wording varying depending on what device you are using as no two brands are the same.

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Ivan Dilks: Meant to add, and as you will likely already realise, but your TV can display HD perfectly OK by simply coupling it into a separate Freeview HD box via the HDMI connections on the rear, as there is virtually no difference in quality doing it that way over viewing via a built in tuner.

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Ivan Dilks: Unless you specifically want the facility of being able to play Blue-Ray DVD's then you would be better off with a Freeview HD twin tuner PVR, as I am sure that your wife would find this far easier to use than a DVD recorder, as there is a limit as to how much their menu system's can be simplified compared to that of the average PVR.

Of course me mentioning this is not intended as any derogatory reflection on your wifes operational skills!

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kB Aerials Sheffield: Nor was my comment intended to take away from your own Keith, as I dont reply using the actual box provided but on another screen, then just paste whats typed back into the box, sometimes not noticing that it has been updated.

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p wright: For a test try manually tuning in Walthams BBC and ITV channels, These being (BBC) Mux Ch61 and (ITV) Mux Ch54.

I would first of all blank out anything already stored by carrying out a re-scan without the aerial being connected, then of course re connect before tuning, if this works just use the "add channels" facility to store the remaining four multiplexes.

These being - 29 - 56 - 57 - 58. Please note though that Mux Ch29 is on low power and might not be received properly.


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Angela: When this happens carry out a signal strength check (within tuning menu) whilst still on the same channel, (with blank screen) and also observe if the channel number has changed, or not even there at all!

Waltham (BBC1)Mux Ch61 and (ITV) Mux Ch54.
(that is assuming that you are receiving from there).

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Jeff: Possibly yes, especially as the HD service is on relatively low power. The only way I see you getting over the problem is by carefully positioning the aerial, this not meaning as high as possible but preferably somewhere that an element of screening can be achieved from the offending transmitter.

Sandy at 22 miles on a bearing of 11 degrees, Crystal Palace at 30 miles on a bearing of 155 degrees.



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Feedback | Feedback
Saturday 3 September 2011 8:05AM

Mike: I have to say that none of the two reception predictors (one being trade) indicate any reception being possible other than from Brampton at 1 mile away.

If you are high up then it might be possible to receive a signal from Stockland Hill, but I don't see you would really gain anything if you did as any signal received would likely only be from Stocklands three main multiplexes on high power, in other words not any more than you presently get from Brampton.

Two of Stocklands commercial Mux transmitters (ArqA & ArqB) are expected to be on low power until some time next year so the chances of picking them up could be quite limited, but if you are prepared to experiment then you don't really have anything to lose, but remember that as well as swinging your aerial around to face towards Stockland Hill to also turn it for horizontal polarisation.

Another point being, that your aerial might be group B (yellow) whereas Stockland is A (red), although for testing purposes this isn't of prime importance, and especially so "if" you decide to use an aerial amplifier during tests.

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Feedback | Feedback
Saturday 3 September 2011 8:16AM

john Fuller: There is always the possibility
that your LNB is faulty or that the dish has moved very slightly, and you really should start afresh by checking this.

If you acquired another box and there is still a problem then it certainly points to one of the aforementioned applying, if not a cable / "F" plug fault. (short circuit)

Unless you are aware of a particular power surge problem, then I would dismiss this as a possibility.

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Feedback | Feedback
Saturday 3 September 2011 9:08AM

john Fuller: Just in addition to above, you should use the signal strength / quality indicator on your box (services - 4 - 6) to detect if even the slightest signal is showing, as if it is then although not being enough to resolve a picture it would indicate a dish alignment problem.

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phil w: Your location is indicated as being capable of having perfect reception from either Mendip (16 mls) or Wenvoe (18mls) but if you are using auto-retune for your TV it could be picking up the other more local possibilities shown (albeit poor) that use much lower channel numbers.

Try when on BBC1 going into the signal checking menu and have a look at what's shown as well as the Mux channel number associated with the signal, as if its Mendip it should be Ch61 whereas Wenvoe is Ch41.

Also do this test whilst on ITV1, Mendip Ch54
and Wenvoe on Ch44.

Your problem could be caused by other means out with your control, e.g: interference from other stations due to atmospheric conditions etc, but try what was mentioned giving the results.


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Nick Madina: The post code provided is not recognised by the predictors, could you please check on this.



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C21 (474.0MHz) after switchover
Saturday 3 September 2011 11:27AM

Stuart: What you mention is strongly suggestive of either the method used to couple up the PVR, or that your signal is below a level that they can resolve a picture, although this unlikely if experienced on more than one device.

What method are you using to feed the aerial into your PVR's aerial socket?


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Digital switch-over problems | Switchovers
Saturday 3 September 2011 11:35AM

steve: Having knowledge of your location (post code) would be of assistance to enable signal checking, but what is the model number of the TV or box being used?

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Feedback | Feedback
Saturday 3 September 2011 1:30PM

john Fuller: Yes! as I think your problem all along has possibly been caused by the dish (or LNB) rather than the box, although if you have tried to carry out the system resetting procedure whilst having no signal then you might have corrupted the software resulting in a real problem, but if its just the LNB procedure you tried then thats OK so long as you followed the instructions.

The main thing is that you will have to ensure that your dish is aligned properly for 28.2 degrees before trying anything else, this greatly simplified if you have access to another box that hasn't been altered in any way.

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James: Well it could possibly be, as work is on going there all the time, with any unexpected reductions in power usually only found out about after they happen,(if reported!) although at only 3 miles away from the transmitter it must really be down, unless as I suspect, your signal level wasn't that much above the cut off threshold in the first place, any slight reductions in power having more of a dramatic effect in this type of situation.

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Ivan Dilks: A wise choice! as I have three Humax devices myself, one Freesat HDR and two older Freeview 9200's, all having proved totally reliable since purchase.

The other thing about Humax Freeview devices being, that due to the sensitivity of their tuners and generally good circuitry, any signals received in a category of less than perfect will not result in glitch levels anywhere near as bad as if the same signal was being received by some of the other devices around, albeit some of these devices (Vestel chassis based) being much more user friendly in operation.

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Ray Humphrey: Yes, you are referring to Mux Ch29 which will be on low power until 12th of October of this year, as I likewise (located near Stamford) have very erratic, and sometimes no reception at all from it, nor can I get it from Sandy (Anglia) on my other aerials either as its on lower power there as well.

Thank goodness for Freesat, as ITV3 etc is a popular channel in my household.

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Really to replace Dave Ja Vu on Freeview
Saturday 3 September 2011 4:47PM

Peter: Yes! excellent boxes with good sensitive tuners.

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Kieren: I haven't experienced any problems when I have been using Freeview HD from Sandy, and what you mention is inclined to suggest that although you might have been receiving HD OK it was possibly at a level not far above your boxes receiving threshold, and which it may now have dropped under due to atmospheric condition changes.

As you have re-set your TV (or box) you will have blanked out the stored channels memory, so go into the tuning menu and check the signal strength on Mux Ch21, that being Sandy's HD Mux transmitter channel, and if you get about 40% or so level showing try a manual tune, storing as necessary, unless done automatically on your device.

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James: Well its anyone's guess! as this will happen as and when necessary, as its not exactly abnormal when pre switchover work is going on.

What you should do though is to keep checking the signal level on Mux Ch22, that being the multiplex you are referring to, signal level / quality indications accessed within the receiving devices tuning menu..

It should be appreciated though that even although it might vanish from your screen its only because it has dropped under the reception threshold of your equipment, and is still being received. (unless the transmitter has been shut down)

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Sheena: Only a post code will give an answer, as Edinburgh can receive Freeview from either Craigkelly, Blackhill or a local Cannongate transmitter, that said though parts of Edinburgh can be quite iffy for reception no matter where its from, even with an outside aerial.

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michael Blore: BBC1 etc from Nottingham is on Mux Ch27 (522Mhz)

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Jeff: Well Mux Ch31 is shown as zero reception at your location until 9th of May 2012 when it changes to Mux Ch51, however Mux Ch67 should come into the equation from 14th of this month when it changes to Mux Ch48, likewise with Mux Ch40 on 23rd of November when it changes to Mux Ch52.



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Colin: You haven't mentioned your location, so an expected signal strength check cannot be made, however the answer is yes if your Freeview reception is OK.

You do exactly the same as before but feed the Sky boxes RF1 output into your Freeview boxes aerial socket, then the Freeview boxes RF output is fed as normal into the other sets.

The points to note being, you have to verify that the Freeview box you purchase has a built in RF modulator, secondly that the Sky boxes RF output channel doesn't clash with any of the Freeview channels being received, keep it about 2 away, and finally that the Freeview boxes RF output doesn't clash with the Sky boxes similar.

In operation your other rooms will be able to receive Freeview channels directly, as they pass through the Sky box and also the Freeview one, or if an analogue only TV is used in one of the rooms via the RF outputs from both the Sky box and the Freeview one. (in effect two analogue channels, with Freeview on one Sky on the other)

You will of course still have to place other dual standard TV's in use on analogue to receive Sky.

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Colin: Just an addition. Place the Freeview box first in the chain rather than the Sky one, as its best that the Freeview device gets the best signal from the aerial, although it would work perfectly OK the first method described so long as you have a good signal.

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Matt: No! but you could do if you were referring to a FreeSat TV ot box, the emphasis being on "Sat", as dishes do not discriminate against anything connected to them so long as whatever is designed as a satellite device, Freeview isnt!

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Horse and Country TV
Sunday 4 September 2011 7:57AM

George: I always hesitate at recommending anything other than Freesat, this because that so long as any dish installed is not facing into a nearby tree then Freesat is 99.9% reliable, anytime not usually being for only few minutes during a really thundery downpour.

Anyway, you are predicted as being able to have good reception from either Craigkelly, Blackhill or even Durris, although I have serious doubts about the latter, but as you are only 8 miles away from Craigkelly Freeview would indicate as being OK for your requirements, Freeview being much more flexible than Freesat if TV is required in more than one location in the house.

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Terence Carpenter: If you have connected your TV into the Freeview boxes RF output and carried out a scan on your "analogue" TV, then that should have picked up the boxes output, likewise anything seen being from the box.

However, as you havent mentioned where you are located its not known if analogue signals can still be received, so to save confusion carry out the above "without" the aerial being connected into the box, then anything seen will only be from the box.

After completion, you will then have to replace the aerial into the box and carry out a complete scan on the box to pick up the Freeview channels.

Please be aware though that these boxes are not without their problems!

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kB Aerials Sheffield: Yes, re: Freesat TV's being uncommon, to be strictly accurate I should have inserted the word "capable" between Freesat and TV, because as you say Keith Freesat only TV's are not really available.

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Scott: Yes to the latter! as each device requires its own connection to the dishes LNB, because in Satellite reception the box communicates with the dish regarding polarity switching etc.

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Winter Hill (Bolton, England) transmitter
Sunday 4 September 2011 1:55PM

Liam McLoughlin: Well although I do suspect that this problem is most likely to be out with your control, as it could possibly be due to Mux Ch61 being interfered with by some distant transmitter, this due to the atmospheric conditions prevailing at this time of the year causing a signal to travel further than normal, something that's happening in some other parts of the country and likewise causing similar problems.

However, it would be beneficial though if you could try a signal strength / quality check on Ch61 at various times of the day, as this would be an indication of whether or not its normally running at a level reasonably above the cut off threshold of your TV (65%+ quality) or is just hovering above it, this making reception much more vulnerable to picture break up, although it should be said that the percentage figure mentioned varies quite a bit between different brands of sets, but it does give some indication as to what is happening.

PS: Even try a signal check on Ch61 should the picture completely vanish, as a signal level should still be there.

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James: Its most likely that the signal level just dropped under the receiving threshold of your set, as its likely that it wasn't running at a level that very much above it in the first place, that's why I asked if you could carry out a signal check so that this could be assessed.

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Werner: The issue is not so much re-setting or re-tuning but carrying out "manual" tuning of the multiplex channels involved, as the chances are that you are picking the odd channel up from another station, maybe even Reigate at 11 miles away, albeit that DUK's trade predictor does not show this as possible.

Blank out the channels on your Humax by removing the aerial and carrying out a scan with it, then after plugging back in again manually tune in the following channels, storing as required.

Ch25(BBC1) - Ch22(ITV1) - 31(HD) - 32(SDN) - Ch34(ArqA) - Ch29(ArqB) - Ch28(MuxB)

Note you may not receive Ch31(HD) properly, as many are having problems with it since the end of August when Sandy started using the same channel.

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Mary Nolan: On your remote control press "services-4-6" and note what the strength / quality indications are showing as, they should be about 75% along the scale with both about even with each other. (or very near anyway)

If they are not, then your dish is liable to be slightly out of alignment.

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andy: As you are referring to a reception issue, its quite impossible for anyone to assist without knowing your location. (post code)

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Neil: ITV4 etc is on a much lower powered Mux transmitter until 14th of this month when a further re-tune will be required, as it then changes from Mux Ch67 to Mux Ch48.

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Doug B: You are possibly suffering from the reverse of many experiencing problems with HD from Crystal Palace on Mux Ch31, this because of Sandy also using that frequency on a temporary basis until May of next year.

In other words Crystal Palace HD is likely to be affecting your reception from Sandy.

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gibson: If you are referring to Waltham, then its likely that when you re-scanned you have picked up a number of (if not all!) channels with lower numbers from Sutton Coldfield or Belmont, as indications show that this is possible from your location.

Waltham uses Mux channels 29 - 54 - 56 - 57 - 58 - 61, so whilst viewing any channel that might be breaking up, carry out a signal strength / quality check noting the Mux channel number being shown, and if its not one on the list its not from Waltham.

By the way, you might not receive Mux Ch29 very good,as its on lower power until October 12th.




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Feedback | Feedback
Sunday 4 September 2011 7:29PM

john Fuller: Sorry, on reading you posting again I see that you did "not" actually manage to carry out the LNB reset as you couldn't find it in the list, however I would consider that to be a plus point as its very unlikely that any fault of this nature actually existed with the LNB anyway, so you have only two choices left, the first to verify your dish.

(1) Temporarily acquire another working box to check if any reception is possible from your dish, if not then take measures to re-align it, as that's what it will be provided some form of signal indication can be seen at some point on a Sat detector (even simple types) when the dish is "slowly" swung from left to right, although if not, then that could mean an LNB failure.

(2) Should you not manage to acquire another box try and find someone who will let you try your box on their dish, (you cannot damage their LNB by doing this) and once connected go into "services - 4 - 6" and observe if any signal is showing, if it is then carry out the software upgrade procedure as seen in "Re-set method 3", as this "might" get over anything minor lost by what you have done. (no guarantees though!)

Should of course no signal be showing then it doesn't look very promising, as there might have been a fault with the box itself before you even touched it.

By the way if you know any obliging person with a Freesat box, you could use that to test your dish.


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Loft aerials | Installing
Sunday 4 September 2011 7:34PM

sandra: You would really have to provide your post code for an answer of any accuracy, this required for signal checking purposes.

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David Phillips: These programmes, as well as a number of others, are on two multiplexes (ArqA / ArqB) operating on low power (4Kw) until November 23rd.

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margie: If you are enquiring about reception, then you should be getting good reception from Anglia (Sandy) on the main (BBC/BBC HD/ITV) channels, although others are on lower power and can possibly suffer from break up depending on exactly where you are located within PE29.

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Joanne Pollard: Is the TV in the other room working on the same aerial as the front room? and if not what is it working on?

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Joanne Pollard: Just in addition to what was mentioned.

You should always be aware of the fact that a signal that's too strong can cause "exactly" the same symptoms as one that is too weak, and if the TV in the other room is on a different aerial, or is coupled directly into the loft one, then an over powerful signal could possibly be causing problems for it.

The reason I say this is that no two TV's or boxes have the same sensitivity, and if a signal is a bit on the strong side one TV might appear to work OK whereas another wont, this purely because an over powerful signal can on some sets cause blocking of their tuners, either on that channel or even all of them.

I only mention this with reference to what you mention about your location, as in my opinion you are very likely at some point to start suffering from this type of problem.

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Feedback | Feedback
Monday 5 September 2011 7:36AM

andrew Jamieson: The post code you have given comes up with two contrasting areas when used on reception predictors, none of the channels seen matching what you have indicated, therefore could you please indicate the transmitting station you are referring to.

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ITV 3
Monday 5 September 2011 7:50AM

Ade: Try a manual scan on Mux Ch31, as at only 3 miles away from the transmitter there is no reason that you shouldn't be receiving it, unless that is your boxes tuner is on the verges of blocking because of an over powerful signal from the main stations on high power.

If you have a set top type aerial around, try using that for a test.

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ITV 3
Monday 5 September 2011 5:59PM

Wendy: You cant really do anything, as the multiplex ITV3 uses (Mux Ch29) will be on low power until 12th of October, many people are having problems with this including myself.

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ITV 3
Monday 5 September 2011 8:08PM

Wendy: Just out of interest, when you say that a signal is showing but is not strong enough to resolve a picture, is the signal showing of a reasonably constant nature, or is it diving up and down?

The reason I ask this is, that if the signal is reasonably constant then a booster could well help in this type of situation, maybe you could also mention where your aerial is situated.

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Monday 5 September 2011 9:39PM

andrew Jamieson: Thanks, got it now. However on checking I have to say that it does not really look promising at any time as far as Freeview reception in your post code area is concerned, as present indications are that you should only be able to receive Ch29(BBC1)poor - Ch33(ITV1)OK - Ch23(MuxA/SDN) poor - Ch34(ArqB)OK just - Ch26(MuxB)poor.

From about Mid 2012 this should improve with you being able to receive the three main multiplexes, namely BBC/ITV/HD service, which in effect will be like a Freeview "light" transmitter albeit that Divas is a main station, as the other three Mux channels are indicated as remaining in the poor category.

To put it in a nutshell, although reception predictors cannot really cater properly for local conditions and as such have elements of inaccuracy, but in my opinion you are really in an area that any reception of a reliable nature could only be obtained is by using Freesat.

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Monday 5 September 2011 9:47PM

andrew Jamieson: Omitted to mention that Mux Ch48 is not shown as being receivable at all at your location, so its really a fluke that you are getting it at all.

This being why I mentioned about predictors having elements of inaccuracy etc, although the DUK trade one I use is usually somewhat over optimistic in its forecasts, in other words having the "Rose tinted glasses" approach!

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Monday 5 September 2011 10:04PM

andrew Jamieson: I think I must be suffering from a touch of colour blindness! so please amend what I said regarding Ch29 and Ch26, as they are both variable reception not poor, likewise the remaining three Mux channels I mentioned also being in the variable class from Mid 2012.

(Ch23 still poor though until approx Mid 2012)

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david faulkner: Put in basic terms, if the tuner in whatever Freeview device you are using is overloaded it will either totally block reception altogether by swamping of its input circuitry, or if the signal is slightly over the top in power is very likely cause erratic reception in the same way as can be experienced when a signal is being received that is just hovering above the reception threshold of the equipment being used, in other words the picture breaking up or disappearing at random as the signal level being received fluctuates slightly.

Needless to say this can vary between different brands of equipment because the varying sensitivity levels of the tuners being used, but in cases of excessively strong RF signal overloading a whole range of odd symptoms can be experienced.

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Tuesday 6 September 2011 8:06AM

Jim: I realise that you say you have checked that the dish hasn't moved, but was this physically as far as your fixings are concerned? or was it by using the Sat finder meter? as only the latter is liable to confirm.

Scaffolding by the very fact of not being rigid is liable to creep or settle slightly, this possibly just enough to knock the alignment out. What levels do you see on the box by pressing "services-4-6" on the remote control.

Its just that I feel its a bit coincidental for anything other that either an alignment or cabling / "F" plug problem to be involved.



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Tuesday 6 September 2011 10:39AM

jim: The mild tingling you are getting is quite normal, and is due to the RFI suppression techniques used in all non-transformer type power supplies fitted in most domestic equipment over the past 30 years or so.

Regarding your dish fixings, I dare say you have fitted it perfectly OK, but the possibility exists that the whole framework has moved a fraction thereby knocking your alignment out, which only your sat meter could verify one way or the other, although testing your box out on your Dads system, or his on yours, will give 100% proof of where the fault is.


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Glen R: Well on trying two test post codes for Gravesend, both Post offices not too far apart, revealed quite different results in the reception possibilities, neither presently being Crystal Palace or Bluebell Hill, with the former being variable (or poor ITV1) until the 18th April 2012, and the latter likewise until 27th June 2012 with the exception of MuxC/ArqA (Ch42) and MuxB (Ch45)

The only stations shown as being presently possible to receive being Sudbury / Rouncefall, but on a Freeview "light" basis, as Sudburys other Mux channels are indicated as not receivable.

Only the post code of your intended destination would give any reasonable level of accuracy as what to expect, but predictors do have elements of inaccuracy as they cannot fully compensate for local conditions, so this always has to be kept in mind.

Have to say though, it doesnt look that promising without careful aerial positioning being the order of the day!

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Tuesday 6 September 2011 5:39PM

Val Fletcher: It could be the Freeview box, but this is a bit doubtful judging by what you report. What to do is try carrying out a further re-scan "without" the aerial being connected, this being done to blank out anything stored, then after reconnecting the aerial carry out another scan to load the channels back in.

If still nothing, then try a manual scan on Mux Ch24(ITV1), if you dont see a manual scan option mentioned, sometimes its under the "add channels" facility.


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Tuesday 6 September 2011 6:01PM

Jackie Rimmer: Yes it would, but I think you should first of all try and investigate why the bedroom socket does not work. Try coupling the TV used in the bedroom into the lounges aerial socket, but with the jumper lead used in the bedroom.

Is the lounge TV's aerial socket (if one used) a double type?

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Tuesday 6 September 2011 7:15PM

Marie: The 29 is just an indication some boxes have when they cannot connect with the default transponder. As you have already tried the mains lead out procedure which you say has made no difference, then the only other possible reason is that of your dish having moved very slightly out of alignment.

You should try (if possible) and borrow someone else's box and try it on your dish, or alternatively try your box out on theirs, as this would verify the location of the fault.

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john: As you have said that you use the Freeview built into the TV upstairs then you must be using a dual standard TV, as to receive Sky upstairs you must have had to change its operating mode from DVB to analogue to do this.

So what is it that you want to be able to switch to Freeview on?

What you mention about the picture being grainy can be caused by using a reasonably powerful booster on the normal aerial that's plugged into the Sky boxes input, or possibly by the Sky box having a weak RF modulator, so try setting the Sky boxes RF output channel on a much lower number, re-tuning the upstairs TV to find the new channel, plus of course ensuring that the new channel number is not clashing with a Freeview (or analogue) channel being received on normal aerial.

Cannot advise on best channels to use as you have not indicated your location.(post code).

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Tuesday 6 September 2011 9:49PM

jim: No problem Jim! and pleased to have been of assistance.

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Tuesday 6 September 2011 9:58PM

Sheila: This is quite possible, try wiggling it at each end whilst listening to a music programme, as this will instantly show up a bad connection to a scart socket.

If it is this, pull it out and in again a few times as that usually cleans the pins.

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Wendy Wheeldon: Indications are that you should be able to receive Freeview from Sutton Coldfield as well as Waltham, however what you have mentioned suggests that you are using Sutton, and its HD service on Mux Ch34 (from "Hints" Litchfield) is operating on low power until the 21st of this month, so its very unlikely you would be able to receive it irrespective of what might be seen published.

I initially suspected that your TV might not be capable of HD reception, but I checked the spec and indications are that it is fitted with a DVB-T2 tuner.

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Wendy Wheeldon: Further to what said, you could try manually tuning it in on Mux Ch34, as sometimes a manual tune will pick up a signal where an auto-tune wont, but I still doubt that you will receive it.

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sue: Its impossible to assist with any reception query when your location (post code) has not been provided.

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louise: The S42 post code area indicates that (in theory) a number of different stations can be received, so in the interests of accuracy you really have to provide a full post code.

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Emley Moor (Kirklees, England) transmitter
Thursday 8 September 2011 4:59PM

Rob: As well as what David mentioned possibly applying, it could also be that Emley Moors PSB1 is giving an over powerful signal for the boxes concerned and which can block some equipments tuners from receiving anything, so for a test try by-passing your booster.

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Upgrading from Sky+HD to Freesat+HD | Freesat
Thursday 8 September 2011 5:14PM

Jim: What you mention is a classic symptom of a weak signal, the Sky box may well have appeared to work OK, but its possible that the signal wasn't that good on it either, with the only reason for it working OK being because it was more sensitive than the FreeSat receiver.

I know that you say that the signal was perfect, but was it on a "services-4-6" signal check? as its likely that the quality would have been seen to be down.

Anyway your dish alignment requires a slight trim, unless that is you have a faulty co-ax to "F" plug connection.

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Emley Moor (Kirklees, England) transmitter
Thursday 8 September 2011 6:03PM

David: My information is that Emley Moors PSB1(BBC1) and PSB3(HD service) are both on full power

As far as Belmont is concerned only two Mux channels, ArqA(Ch53) and ArqB(Ch60) are temporarily on low power (@ 4Kw) until November 23rd when they then increase to 100Kw, SDN presently being at, and staying on 50Kw.

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Liz: As your problem involves reception strength (or possibly lack of!) you really have to provide your post code to enable your possibilities to be checked on.

This is because of the fact that an over powerful signal can in many cases give exactly the same symptoms are one that is too weak, so one of the contradictory replies you were given has to be correct.

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BBC One
Thursday 8 September 2011 8:19PM

john mckinnon: As you havent mentioned the transmitter you are receiving from this possibility cannot be checked on, but should it be one that has just switched over to high power operation on BBC channels (e.g: Emley Moor) your signal could be too strong and is causing blocking on your tuner.

If using a booster try by-passing it, or using an attenuator in line with the aerial socket.

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Emley Moor (Kirklees, England) transmitter
Thursday 8 September 2011 8:38PM

Mike Dimmick: Yes, thanks for that, as I was just really going by what I seen listed on the transmission details at the top of the page as far as Emley's HD was concerned.

Briantist: Thanks for the confirmation that Emley's BBCA is indeed on full power at Emley, that is as well as the other stations that have carried out DSO1 switches.

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Indoor aerials | Installing
Thursday 8 September 2011 8:49PM

eddie: It all depends on whether or not the TV you have is dual standard, that is capable of analogue as well as Freeview (digital) reception.

The other important factor as far as Freeview reception is concerned is your location, preferably in the form of a post code so that your reception possibilities can be checked on.

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Emley Moor (Kirklees, England) transmitter
Thursday 8 September 2011 9:26PM

Briantist: Perfectly excusable! and to be honest about it, I find it amazing how you can manage to keep up with so many changing statistics anyway, that is without making any more errors of a minor nature than you might occasionally do, quite mind blowing!!

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louise: Well on having a look at the trade reception predictor, although Sheffield (@ 15mls) is showing as a possibility for reception as well as Chesterfield (@ 7mls), I feel that its more likely to be Emley Moor you are receiving from, the problem there being that you are not forecast as being able to receive "C" (ArqA) until the 21st of this month when switchover stage 2 takes place.

This said taking it that when you say block "C" you are meaning the one containing programmes like - Pick TV / Dave / E4+1 etc? these presently being on Mux Ch50 from Emley but changing to Mux Ch52 on switchover.

Although a long shot, you could try a manual tune on Sheffield's Mux Ch45 or Chesterfields Mux Ch46 to see if anything comes up, as the programmes referred to are on the two channels mentioned.

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