All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
Suzanne: My personal feelings is that the Mux Ch59- problem could well be connected to the negative offset issue in both your cases, as any device with an inflexible type of tuner will always suffer more on weaker signals of the off set variety by fact of preset oscillator channel being easier to resist being pulled off frequency, higher signal strengths usually forcing lock-on, and likely why there doesn't appear to be any problem on Mux Ch60-, Mux Ch59- will of course be received at a much lower signal strength than Mux Ch60-.
The chassis used in Simons Sharp is known to suffer problems in this respect no matter what might be seen in some places, but the problem is erratic dependant on the signal strength being received, and this is why some people have no real problems whereas others can do in varying degrees.
Your TV is a Bush, and as such will use a chassis under a lot of different guises, and I was intending to check on the chassis used in your model for purposes of cross checking to find out if when used under a different brand name they were known to suffer from this problem, but Sunday isn't a good day to obtain this sort of information.
Not having the manual to hand for your TV, did you notice in the tuning menu if there was an option to enter a frequency? or is it just the more usual Mux channel number.
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Suzanne: Well, although not having experience of your particular model, speaking from an engineers point of view "if" you have already carried out a factory reset before carrying out a re-tune and still nothing has came up on Mux Ch59, then its either that the transmitter is off air because of a fault or that the problem is caused by the TV having negative off-set problems, or alternatively that it has a defect in its pre-set channel memory, although I doubt this if it appears to be searching.
The only important thing that I did mean to ask though, was what level of signal you are receiving on ArqB Mux Ch55? as although its not an off-set channel its on the same power as Mux Ch59, and so it would be interesting to know the level its received at.
It wouldn't do any harm though if you contacted the Bush customer services / technical department giving them the model number and stating the problem along with the suspected reason for, just to see what they might come up with.
That said though, customer services dealing with these type of brands can be very variable as regards to their knowledge of problems, basically because they only attach a Bush badge on the set, and in many cases don't even repair any returned as being defective but just usually replaced them with a new one, hopefully of a later type with an update installed.
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Simon: Just noticed that earlier on you had posted to me at only a minutes gap before my own posting to Suzanne, hence I never seen it above the screen masking.
Anyway, maybe just like I have requested to Suzanne you could indicate what you receive Mux Ch55 at? although I think on your Sharp it might state - "poor - medium - good or very good" but at least its an indication.
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Mark: Just to clarify, is it the Freesat box that you cannot get the news for BBC Scotland on?
I assume you have entered the post code again after you reset the box, the post code either being yours or another associated with the area you want the news for, this picked from a telephone book of the area.
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Abbey Show: I would suggest that you make a few enquiries to anyone associated with installations and ask what they would charge to align your dish.
This said, taking it that you know that is all thats wrong!
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fiona: A Sky dish has no connection with Freeview and as such cannot affect it, do you know for sure that your neighbours actually receive Freeview and that its not Freesat?
Only a post code would indicate your reception possibilities.
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bushistush: As far as the site goes, its a volunteer site owned and operated by Briantist (Brian Butterworth) and isn't as far as I know connected in any way with organisations such as Freeview, myself as a long term engineer involved with all aspects RF work (TX & RX) purely sharing ones knowledge as they say, as does most others involved, with my own job always having been my hobby, much to the annoyance of my wife by me always having sizeable pieces of equipment laying around for hours on end.
I know what you mean about being hesitant at contacting Bush, but unfortunately(?) I don't really have any shortcuts to them, and any enquiries on something like this would have be made in the same matter as yourself. But as far as the board is concerned though I would have a fish about on Google for stockists of Bush spares, but should time allow I might have a look myself and come back with a link should I find what's required.
On the issue of reception, if your tuners power board is defective then the reception of a stronger signal might cause verges of instability to be lurking around, but I doubt that your signal is too strong now you have reported that there isn't any type of booster being used.
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Lee C: The Wrekin and Winter hill are both forecast as being your best option, and "if" you got good reception before you re-tuned then there is no reason why you still shouldn't.
Important!! You should though carry out a "factory" re-tune (or reset) to make sure that nothing is stored anywhere in the box, as that will upset the re-loading of channels by putting them in the wrong place.
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Simon: Thanks for that update, and which is particularly interesting considering its using a different set altogether.
You may have noticed that I commented to Suzanne about both of you being in very roughly the same line from the transmitter, albeit Suzanne being at 8 miles and you at 16, with the other mystery being that no one else seems to have complained of a Mux Ch59 problem except yourselves, this being checked using another site as well as this one.
However week days are better for gathering info and is something I fully intend doing tomorrow, its one of these situations that I wish was happening closer to my own area then I could personally carry out some field tests on the signal strengths received on Mux Ch59, and at what distance from the transmitter they vanish!
PS: You haven't mentioned as such, but I take it you don't have a VCR or Sky box in circuit with the aerial lead?
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Sunday 2 October 2011 12:50PM
bushistush: Another little point I forgot to mention is that some older devices do not like operating on negative offset channels, so "if" COM5/ArqA doesn't work properly either then there isn't really any cure for the problem unless Bush have any software updates for that model.
I only say this to avoid you carrying out unnecessary tests, that is as well as wasting money on an attenuator.