All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
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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Thursday 25 August 2011 5:39PM
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)