All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
David Dunbar: These units are simply placed in-line with the aerial connection to your TV or box, if though the aerial downlead is being fed into a booster / splitter then the AT800 filters "output" is connected into the boosters "input" rather than the aerial, the latter being connected into the AT800's filters input.
Mast head amps are a problem though, as by rights the filter should really be fitted between the aerial and the mast head amps input, and if this applies in your installation I would contact AT800 about this.
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David Dunbar: Also meant to add, that I see why AT800 has sent you this device, as on checking I noticed that you are surrounded by ten mobile phone transmitters, some of having possibly installed 4G transmitters ready to spring into action once that the service starts.
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Mike Tarbuck: If the missing channels referred to are on the such as ITV3 / QVC / the new Drama channel on LCN 20 etc, etc, then you are only predicted as having variable levels of reception from this transmitter, this also applying to your HD reception.
But though as far as 4G is concerned, if you can receive BBC OK from Whitehawk Hill then although that is inclined to eliminate any possible problems being caused by the "testing" of that system its not quite a 100% guarantee that it wont, because any signals that are only predicted as being variable anyway are much more vulnerable to problems being caused if a TV or boxes sensitivity is reduced by its tuners input circuitry sensing the presence of a strong RF signal such as from a nearby 4G transmitter, RF input stage swamping being the only reason why 4G can affect reception.
As far as reception is concerned, although a terrain check (ground only) indicates a clear line-of-sight from the Newhaven transmitter the signal path from Whitehawk is seen to skirt close to the ground from about just under 1 mile prior to your location and that sort of thing can result in variable levels of reception dependant on whatever may or may not be on that particular piece of ground, and so what you report is not entirely unexpected.
Have you made any local enquiries with neighbours etc for the purpose of being able to completely eliminate your own installation as being deficient in any way? plus you also have to keep in mind that many have been complaining recently about problems with reception being caused from distant stations due to the current wave of high pressure that is sweeping across parts of Southern UK.
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John Brownlie : Yes, but remember that your Ross box is not a dedicated Freesat device and as such the programme channels are not likely to come up in the correct EPG order such as they would on a Freesat device, this requiring you to spend some time shuffling them around so as to resemble a Freesat guide.
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Denise holman: Can you actually view Drama when you select 20 on the programme guide? and if you then for test purposes try an "instant record" checking the results after the recording has ran its course, as there is nothing odd about this channel as far as recording on Freeview equipment is concerned.
The other point being, do you receive (10) ITV3 in a reasonably glitch free fashion? as the Drama channel is received from the same mux transmitter as used by ITV3 etc.
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Steve R: You should carry out a signal check on one of your boxes as what you have reported is inclined to suggest that your dish is slightly out of alignment, as the strength / quality being indicated on the test should be around 50% minimum level but preferably with the quality being slightly higher than the strength.
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Steve R: By the way, I should also have added that its best to try this test when all is OK and making a note of the indications seen, then try the same test again when the problems arise and compare the result with the one previously taken.
Error 25 (or 29) is just really the code for no signal, albeit that it hasn't really disappeared but has dropped under the level necessary for decoding of the signal.
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Rob: Yes, up to a point anyway although for future proofing a "K" group aerial is preferable, the reason being that should COM8 transpire it will be using Ch35 and although a group "A" aerial's upper limit is Ch37, which obviously covers Ch35, in reality its generally found that most of these dedicated group aerials has a tapering off in efficiency starting a few channels before the extent of their published coverage range.
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Rob: Having had further thoughts on your situation and triggered by the fact that you are located at approximately 42 miles away from the transmitter, I think it best NOT to make any allowances for the proposed COM7/8 on Ch's 33 & 35 and stick by the maximum efficiency of using a group "A" aerial.
I say this based on the fact that you might not be able to receive these COM's anyway when taking your location into account as well as the coverage range expected from whats expected to be relatively low powered transmitters used for the purpose of operating as a single frequency network along with Reigate and Guildford.
Just a little point concerning the aerial presently used, I realise that you stated it being a wideband type wideband but are you positive about that? if you have a pair of binoculars kicking around have a look up the very front of the aerial and note if you see a red plastic plug on the end of the horizontal cross boom that holds the elements, if you do then its already a group "A" aerial.
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Saturday 13 July 2013 8:05PM
Kable Singh: As this programme is transmitted on the same multiplex as ITV3 / E4 / 5* etc then the question would be, can you record any of these channels? as your problem might simply be caused through bad reception of this multiplex.