All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
Rafael: Taking it you are meaning Belmont? which isn't really switched over as yet with the exception of the BBC1 Mux transmitter, this now operating on full power as well as the new 8K transmission mode, but try a manual scan on Mux channel 22 (BBC1) and see what comes up.
As you are only located at 8 miles away from this transmitter the possibility exists that your equipment is experiencing signal overload problems which will block reception, so if any boosters are in line try removing them, but if by any chance this doesn't make any difference then a attenuator in line with the aerial socket could effect a cure. (this info much more applicable if using an outside aerial)
To test for overload problem, if you can access a set top type aerial give that a try, as if BBC1 is then found to work that proves you are suffering from signal overloading.
Of course another more dastardly problem could exist if none of the above effects a cure, that being of your receiving equipment not being able to respond to an 8k signal, although this would apply more with older equipments.
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k.forrest: To enable anyone to provide an answer to what is obviously a reception problem they have to be aware of a persons location, (post code preferable) this for purposes of checking the reception possibilities for that particular area, and with this especially applying when STV is mentioned as it covers such a vast area in Scotland involving more than one transmitting station.
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Gary Dadds: The trade reception predictor indicates that you should be receiving a perfect signal from Sudbury on Mux Ch47, so I would try a manual scan on this channel.
If still nothing, then try the same test but on Mux Ch21, that being Sandy Heaths HD service, as although it doesnt indicate such good reception at least its still in the predictors green zone. (good!)
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Niall: Well Digital UK's trade predictor indicates that you should presently be able to get good reception from Winter Hill, but not Emley Moor until 2012, even then with it still not being quite as good as Winter Hill.
You should try a manual tune on Mux Ch62 (BBC1) and Mux Ch59 (ITV1) these being Winter Hills main channels, Winter Hill being 14 miles away @ 250 degrees from your location, and even although not exact, you might be able to pick Winter Hill up on the rear of your aerial.
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Niall: Just to add, the only one aspect concerning your aerial thats liable to restrict reception on any test carried out, is that because its presently set for Bacup it will be mounted as vertically polarised, (elements top to bottom) whereas Winter Hill being a main transmitter is horizontal.
Sometimes dependant on the type of aerial being used, using it on the incorrect polarity can affect a signal more than it does if receiving on its rear, your test being carried out with both the mentioned applying!
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Elliot (hockley): Well looking at DUK's trade predictor indicates that you should be getting a first class signal from the three main Mux channels from Sudbury, namely BBC1(Ch44) - ITV1(Ch41) HD service(Ch47)
The point is that your local transmitter at Rouncefall (1 mile away) transmits on the same channels as Sudbury, and there is a possibility that with the type of aerial you are using its overloading and desensitising your receivers input for any other lower powered stations, as only the three Mux channels mentioned are shown as being possible for reception anyway at your location, as there are no indications shown for the reception of Mux's A(Ch49)- Mux C(Ch54) - Mux D(Ch50).
It should also be noted that Mux A is only temporarily operating on Ch49 @ 14kw, and will be doing so until mid 2012.
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Elliot (hockley: Just another small point based on what was mentioned about signal strength, you should try reducing your signal slightly rather than increasing it, as if a powerful signal is desensitizing the tuners input this would help in this type of situation, the reduction done by incorporating a simple attenuator in line with the aerial socket, these generally obtainable from TV shops. (some of anyway!)
It should still be appreciated though that you are in what could be classed as an "iffy" area for reception, the signal strengths you have indicated somewhat proving this, and in these type of areas most things tried have an element of hit and miss about them, as nothing can be guaranteed.
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Margaret: If you are referring to programmes like ITV3 etc then that's quite correct, as the Felixstowe transmitter is classed as a "light" one meaning that only three Mux channels are broadcast, one of being the HD service, with the reason for programmes such as the one mentioned not being broadcast being purely because the commercial interests involved weren't willing to pay for the Multiplex operating costs.
I had a check at the reception predictor for your post code area, unfortunately no alternatives are really shown as being possible except for maybe Sudbury mid 2012, even then its shown as being variable and as such could not really be relied upon.
Freesat being your only option for 99.9% guaranteed reliability.
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phil joy: It should be vertically mounted, with the importance for this being greater the further the distance away a person is from the transmitter.
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Saturday 13 August 2011 3:17PM
Muriel Fuller: If you are referring to Mux D (ArqB) you should try carrying out a manual scan on Mux channel 67 and see what comes up as far as signal strength / quality is concerned, storing the results if satisfactory, as although the trade reception predictor gives glowing reports on that channel (as well as the others) I am aware that some people around the Ely area can experience local problems, as these channels are still operating on low power compared to the main BBC / ITV1 Mux transmitters.
Just purely for a test, you could also compare the above with the signal conditions received from Mux C on Ch40, as that transmitter is also operating on the same power as Mux D, this being 20Kw compared to the main transmitters on 180Kw.