All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
Ed Hogbin: If you are referring to the reception problem many are experiencing with Sudbury's COM5 & 6 then I can tell you that a bigger and so called better aerial will not really help the situation, as its mainly caused by the massive differential in power between the main multiplexes and the two commercial ones.
Many people that cannot pick up these COM multiplexes are receiving a massively powerful signal from the main transmitters to the extent that in some cases it must be on the verges of overloading the tuner in whatever they are using, the problem there being that the average tuner cannot cope with this type of situation because its input circuitry gets desensitized by overly strong signals, this killing off any chances of it picking up much weaker signals such as from the very low powered COM muxes.
The situation "might" (dependant on tuner) have been slightly better if the high powered mux channels had been in the low to mid 20's and the two commercial ones had been up in the latter 60's, (or vice-versa) as the desensitizing effect wears off the further away you get from a strong signal, but of course it wasn't possible to do this.
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Janette Gibson: Going by the reception predictor (trade view) Sudbury @ 25 miles away is certainly shown as your choice for reception, however its rather ironical that you can receive ITV4 at all, as this is broadcast on extremely low power compared to BBC / ITV etc and which is something that's causing massive problems for many people who cannot receive it.
I wouldn't really advise altering anything as yet, as your problem is liable to be caused by normal atmospheric conditions which in due time will change again. I would though be interested in what signal strength you receive ITV4 at "if" you can manage to pick it up again, the problem being that when you carried out a re-tune you will have scrubbed it from the TV / boxes memory, this now require constant re-tunes being made to recover it.
To avoid complete re-tunes having to be made just "manually" tune it in on Mux Ch50.
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David Kent: another thing to keep in mind is that the low powered Crystal Palace HD transmitter is also temporarily on the same frequency as the similarly powered ITV3 multiplex used by Sandy, this causing lots of problems for anyone even remotely North of London, although judging by reports it seems that its C/P's HD service that's taking the brunt of the same frequency clashing problem.
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Robert: Just to clarify, latter comments made are with reference to your original posting.
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Shopkins: Knowing your location (post code) would have been an advantage as it would have enabled your signal strength expectations to be checked on, however as far as that particular problem is concerned you should try carrying out a "factory re-set" followed by another auto-tune.
If a factory re-set / auto-tune still doesn't work give an update on the situation along with your post code.
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Ed Hogbin: Also meant to say, that with you being located at only 5 miles away from Sudbury you will (or should) be receiving a massively high powered signal making the situation worse, and so I wondered if you have tried carrying out a factory re-set followed by an auto-tune "but" whilst using a set top aerial connected to your set, the aerial of course having to be of the simple type. (non amplified!)
Whilst using the same aerial (set top) you could also try carrying out a factory re-set but "not" followed by an auto-tune, and instead manually tuning in the muxes required, these being (ArqA) Ch54 - (ArqB) Ch50, if by any chance you did get results then use the "add channels" facility to recover the main muxes.
However should you feel inclined to experiment you could purchase a variable attenuator rated as high as you can find (about 20dB) and try that in line with your main aerial starting with it turned to maximum attenuation, this simulating being further away from the transmitter, the previously mentioned tests being carried out again with the attenuator in line.
If though it made no difference then try repeating the process with the attenuator turned half way, but if that still fails then there isn't really any more you can do, because success when using this type of action is also very much dependant on how good the design of a devices tuner is, that being a stumbling block with lots of equipment!
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Paul Bailey: Although 2T is part of the device number the actual specification for that stick only mentions it being DVB-T capable and not DVB-T2, the T2 spec being necessary for HD reception.
Have a read at the info on the link below.
PCTV nanoStick T2 290e Freeview HD DVB-T2 tuner stick « Infomania.co.uk
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Roy: Well on looking at the trade view predictor using the code provided only Dover is shown as being capable of providing reasonably good reception, Bluebell Hill being not that good by being variable on every multiplex but one (MuxD Ch39) and with no HD being possible.
To be honest about it I would just manually tune both TV's to the same station, which if its Dover you are receiving from is Mux channels 68 / 61 / 60 / 62 / 55 / 58, the manual tuning menu being accessible via "installation" or "set up" etc depending on what brand of equipment you have.
Just to be sure that the channels given are actually what you are receiving on the "Kent" TV, you should go into its tuning menu / signal check screen whilst its on each in turn: BBC1 / ITV / HD (if used) / ITV3 / Dave / Film 4 noting the Mux channel number shown associated with the signal level, then cross check them against the numbers given, if any errors just use what you obtained from the Kent TV.
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Elizabeth: You are indicated as only being able to have good reception from Hannington, the Mux channel used for ITV3 on that station being Ch40, so go into the tuning menu on the set that hasn't picked up ITV3 and manually tune it in by entering Ch40 in the search box, storing what's received if not done automatically.
Before you do that though try searching up in the 800 ranges of EPG channels just in case ITV3 has been pushed up there during scanning.
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Saturday 3 December 2011 6:03AM
Robert: A booster will have no effect whatsoever on low volume and I feel that you are looking in the wrong direction for the cause of your problem, because knowing these areas I can say that Waltham comes in with a very good signal on your side of Spalding, as indeed does Belmont and to a lesser degree Sandy.
It would be easier to offer advice if you gave some info on your set up, such as what you are using to receive Freeview as well as where your aerial is located.
I will point out though that unless a TV has an area selector facility to store only channels appropriate to the viewers location then you will nearly always have to manually tune in Waltham, as Belmont or Sandy will take up the low EPG numbers pushing Waltham's main channels into the 800 ranges.