All posts by Dave Lindsay
Below are all of Dave Lindsay's postings, with the most recent are at the bottom of the page.
brian: eBay has variable ones for £3.15 (other suppliers and models are available):
TV Aerial Attenuator Variable 0-20Db Freeview Digital | eBay
Granted, you may be pushing it to get it before Christmas! Failing that, maybe you can find a seller that is local to you and which will allow collection.
Or by connecting the centre conductor without the screen might reduce the level enough (until you get a proper attenuator).
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brian: I would reduce it more than just that needed to get a stable picture (assuming that too much signal is the issue).
Being "just below" a level that is too high could be an issue if the level increases slightly (due to the weather etc). Leave room for this.
The picture isn't better when the level is higher, thus the objective isn't to get as near full signal strength as possible.
...Yes I await your news. Just hope that your dad hasn't paid an installer to add an attenuator.
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John Byrne: Possibly not.
Saorview uses the DVB-T transmission standard, just as Freeview standard definition broadcasts. However, the pictures are encoded using MPEG4 standard rather than the earlier MPEG2 standard which is used for Freeview standard definition. Thus, quite a few Freeview non-HD receivers will not work with Saorview.
Refer to this thread:
http://www.boards.ie/vbul…1669
See posting from southboy @ 11-12-2010, 17:50.
He says that he can receive it but gets no picture, which tends to suggest that it can't resolve MPEG4 pictures.
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Martin H: No, it's not at all likely.
See here:
Londonderry transmitter | ukfree.tv - 10 years of independent, free digital TV advice
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a smith: Probably because the BBC transmitter has gone off air but the one which carries ITV1, Channel 4 etc has not.
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Viv Gunton: TVs and set-top boxes usually provide a measure of signal strength and is usually found somewhere in the menu system.
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Martin H: Stockland Hill's COMs (those channels that the Pennsylvania transmitter does not carry) are on the same UHF channels (frequencies) as Rowridge's COMs. They are also on lower power than the PSBs which is probably so as to reduce the area of clashes between the two.
The predictor takes into account factors it thinks are relevant including the degradation from other stations (interference).
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Viv Gunton: The manual for that TV is here:
http://pdf.crse.com/manua….pdf
Page 27 says that the signal level can be viewed via the menu:
Settings > Digital Set-up > Digital Set-up > System Information
Along with the signal strength, receivers usually give the UHF channel (frequency) to which they are tuned. This allows the user to check to see that it is tuned to the correct transmitter (the one to which the aerial faces). It is a good idea to ensure that you are tuned to the correct transmitter.
From Crystal Palace, ITV3 is on C25 and from Hannington it is on C41.
If it is wrong, then unplugging aerial trick should work as each transmitter uses frequencies that aren't intermingled and therefore scanned at different times. Should this be the case, then let us know.
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Gerry: I am 15 miles from you, on the outskirts of Doncaster, and 48, 51 and 52 are registering the same strength on my receiver.
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Thursday 20 December 2012 9:23AM
brian: I think that getting an attenuator would be the best bet.
You are only 5.6 miles from the transmitter and the terrain plot suggests that it might be visible from your rooftop. So yes, too much signal is a possibility.