All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
Jonathan: Fully appreciating that you do not have a direct line of sight to the transmitter, however I still feel that at only five miles away from a 100Kw (main Muxes) transmitter there is a possibility of you receiving a signal that's slightly too strong for your boxes tuner, especially with the aerial system you are using.
The other point being, that signal strength indications can be totally incorrect in these type of situations because of the measuring system used being upset, so purely for a test I would try reducing the input to your box by the inclusion of an attenuator in line with the aerial socket, then try a manual scan on the ITV Mux Ch60 to see what comes up.
Needless to say, and although not mentioned, but if you have any form of booster it must be removed.
It could well be that the obstruction you mention is causing a severe reduction in signal strength, but frequently they don't to the extent that some may imagine that they would do.
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Liz Falconer: Thanks for the update, the content of somewhat confirming my earlier mentioned suspicion of your problem being caused by a broadcast fault, albeit still with the lesser possibility of a problem existing with the Humax.
Anyway, as far as Mux Ch24 is concerned, I would like you to blank out anything stored using the scan without the aerial procedure, then manually tune in Mux Ch24 "only", as the box only having that channel stored is a better way to test things, giving an update once done as far as the signal strength / quality is concerned.
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Bob: As far as the dish is concerned there isn't really any problem with doing what you suggest, as the two "F" connectors that were used on the Sky+ box work in exactly the same way in the Foxsat recorder.
The only problem that you will experience is if you are using the Sky boxes RF output to feed a TV in another room as the Foxsat does not have a modulator, and if you still wish to use this facility it will have to be done by other means, such as a "Digi-sender" plugged into the Foxsats scart socket, or an external modulator connected the same way, this latter device acting in exactly the same way as does the Sky boxes modulator.
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Dean Gerstel: You have to carry out a signal check (via tuning menu) to verify what station is being received, this done whilst on BBC1 noting the Mux channel associated with it, then change to ITV1 (ITV2 also on this Mux) and do similar.
If Sheffield (BBC1) Mux Ch 21 - (ITV1) Mux Ch24, whereas if its Emley Moor (BBC1) Mux Ch47 - (ITV1) Mux Ch44.
Unless there is some large obstruction between you and Emley Moor (@12mls) then Emley would appear as a better bet than Sheffield (@ 9mls) Emley Moor being massively more powerful.
Trees can be dastardly as far as reception is concerned, and if they are obstructing a transmitter that's on relatively low power anyway the more of an effect they will have, Sheffield being on 1Kw compared to Emley Moor on 174Kw.
By the way Emley is 308 Degrees - Sheffield being 201.
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Ian Davies: The predictions seen using your post code indicates reception being possible from Haden Hill (@1ml - 332 degrees) -
Brierley Hill (@ 4mls - 290 degrees) - Halesowen (@1ml - 189 degrees) - Sutton Coldfield (@14mls - 40 degrees) or even to a lesser extent The Wrekin (@26mls - 306 degrees) with only these latter two being horizontal polarity.
Haden Hill and Halesowen being only PSB stations with limited channels.
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Dawn: Remove the aerial and carry out a re-tune without it, this to blank out anything stored, then BEFORE reconnecting the aerial carry out another re-tune "whilst observing the progress bar rising", then as soon as you see it indicating Ch50 plug the aerial back in again and this will scan Oxfords channels, these starting at Mux Ch53.(BBC1)
Any problems will usually require manually entering of the various Mux channels involved.
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Lesley: It depends on where you are receiving Freeview from, as it can be either Crystal Palace or Sandy.
If its Crystal Palace though then the forecast is poor up until next April, basically because Sandy also presently uses the same frequency as is used by Crystal Palace HD, albeit this on a temporary? basis until early May next year, and is something which has caused problems for quite a number of people who reside North of London and use Crystal Palace for HD.
There isn't really any easy cure for the problem, that is "if" its crystal Palace you are receiving from, and the reception problems can vary dependant on the atmospheric conditions prevailing at the time.
Nothing though is indicated as far as problems with Sandy is concerned.
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Peter Robinson: To get over the problem you first of all have to blank out all the channels stored, this usually done by re-scanning without the aerial being connected, although a factory re-set is the guaranteed way of removing them. Then BEFORE reconnecting the aerial start another rescan, immediately watching the channels as they rise in the progress bar, and as soon as you see them passing Ch50 reconnect the aerial and that will load Oxfords multiplexes, rather than what I suspect were previously from Sutton Coldfield.
If by any chance BBC1 / ITV1 doesn't load properly then you could be receiving a signal that's too strong, but only a post code would assist in determining this possibility.
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Andy: Emley Moor is 12 miles away from you on a bearing of 189 degrees, so if you see any Sky dishes around then your aerial should be roughly facing the same direction as them but a little to the right.
(Obviously simulating your own back being against the wall!)
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Thursday 29 September 2011 8:14AM
Bob: At only four miles from the transmitter you are very likely to be receiving an over powerful signal, and which can cause various sorts of problems by overloading your equipments tuner, the intermittent reception that you mention being one of them.
Should you be using any form of booster then it must be removed, or if you aren't then purchase a simple attenuator to place in line with the aerial socket to your TV / box.
Purely for a test of course, but if you have a set top aerial around try that.