All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
alan thompson: Now that I am armed with knowledge of your location another very possible cause of your problem could be applying, that of you receiving an excessively high level of signal to the extent that is saturating your tuner, as you are only 9 miles away from Crystal Palace.
Without actually knowing what type of aerial you are using I would like you to try a test using a set top aerial, if that is you can borrow one, but if not then use a short piece of wire (about 12 - 24") or so pushed into the inner part of the aerial socket then give your receiver another re-tune, giving an update on results, as "if" this rectifies the problem then an attenuator will need to be placed in line with the aerial socket.
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Lordgeous: Without knowing your exact location you have to look at the problem another way, insomuch that part of Bath must suffer from a reception problem by being screened from the main transmitter as otherwise a local relay would not have been required.
However, if a person is not in a screened position then its possible that they could be receiving an excessively high level of signal from the Mendip 100Kw transmitter located at only 15 miles away, the misleading aspect for anyone experiencing this type of problem being that an excessively high signal can cause partial instability in a tuner whereby the signal strength / quality indications given will be totally inaccurate resulting in low readings, or even in some cases 100% strength accompanied with zero quality.
If you have any form of booster fitted then for a test bypass it, or if you have access to a set top aerial then plug that in and give your TV or box another retune, giving an update on results.
The reason for me suggesting this is that 100% strength is not an ideal level for equipment to be running at as the next stage up from 100% is instability, so levels of around 90% or so maximum is much safer as it allows for some channels having the power edge on others.
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R Johnson: You should try carrying out a "factory reset" or "default setting" on your box before trying another re-tune, if this makes no difference to the situation then give an update on the model number of the device in question so that technical aspects of it can be checked out.
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R Johnson: Meant also to say that its the quality of the signal that's more important than its strength, so maybe you could also mentioned what that is showing at "if" your box gives dual indications.
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Jon: The reason for me requesting the model number of TV involved was to enable me to check on any possible service note additions that might have been made about it as most brands have them, however as it transpires that model is known for not having a particularly good tuner (if any Samsung does!) and which requires a signal strength in excess of 80% for satisfactory operation without it suffering from frequent glitches in reception.
Regarding the 40% level you mentioned, is that on the Samsung and is it referring to the strength or quality? as if its the strength then there is no way that the Samsung will give satisfactory reception at that level,(as aforementioned) and so I would be interested to know what the readings are indicated as being on your newer TV as well as the model of.
By the way some of the best types of tuners around for sensitivity and stability are fitted in Panasonic TV's, or in the case of a box or PVR, Humax leads the way.
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Matt: These channels mentioned are from Sandy, but though Tacolneston is predicted as giving superior reception on that code and so its a case of where your aerial is actually facing towards, as for Tacolneston it should be pointing at just about due East as its located at 93 degrees @ 32 miles, whereas Sandy is at 220 degrees @ 40 miles.
Tacolneston uses channels 55 - 59 - 62 - 42 - 45 - 50, so if your aerial is facing East then delete what you have stored and manually tune in each of these muxes, as an auto-tune will usually always store anything lower than these albeit some are intertwined with Sandy's channels.
Another point you should always remember is, that if a person finds that after having carried out a retuning exercise that they now get less of a channel count than they previously had, then dependant on equipment used it can sometimes only mean that duplicates of a channel no longer exist rather than an actual channel as such having been lost, albeit fully admitting that it might actually be the case of a channel or two missing.
What make / model of TV or box are you using?
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Jon: Well, although as was previously mentioned the R41DB is a set that's not exactly noted for its tuners sparkling performance and indeed is quite the reverse. However, if the Humax box that you reported as having struggled to receive a signal had also been connected to that same point then it would be inclined to suggest that a possible problem exists with the downstairs link, as Humax tuners are known as being able to produce a reasonably glitch free picture on a less than perfect signal that would be liable to result in constant pixelated pictures being seen on some other devices.
Pleased that RichardS gave you a pointer with regards on to how to find the signal strength indicator on your D5003, as I don't actually have the manual for that particular model.
I will look out for your update should you decide to try the R41DB upstairs.
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Big Mart: Don't worry about that as its no problem whatsoever, and I will keep a look out for an update from you when its more convenient for you to make one as I fully appreciate your position as far as commitments are concerned, as I have problems similar to yourself with my own relatives.
Regards / jb.
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neil: This could be caused by instability in the tuner and which if so can cause all sorts of odd problems to occur, you really require to provide a post code for your location so that the signal levels expected for your area can be assessed, as you might be receiving an excessively high level of signal.
This said assuming that you have coupled the BT vision box into the TV via a scart connection.
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Tuesday 22 May 2012 8:38PM
Suzanne: If you are tuned to the Rowridge transmitter then your aerial should have been turned around to its vertical mounting position for good reception of the commercial channels, as "if" its still mounted horizontally then you are predicted as only being able to receive the commercial stations on the status of being variable, as Rowridge only transmits its maximum power on the commercial channels on vertical polarisation, that is 200Kw vertical / 50Kw horizontal.