All posts by Dave Lindsay
Below are all of Dave Lindsay's postings, with the most recent are at the bottom of the page.
Maeve clark: By rescanning you deleted all channels stored, that's what's happened.
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Valerie Butterworth: If it's set to 14 day EPG (electronic programme guide) then change it to 8 day EPG.
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Maeve clark: As indicated above, there are engineering works being carried out on the Craigkelly transmitter. You will now have to either do a rescan or attempt manual tuning to add the missing multiplexes, something which wouldn't have been required if a reset had not been carried out.
For manual tuning to Craigkelly:
COM4 - ITV3 - C42
COM5 - Pick TV - C45
COM6 - 4Music, Yesterday - C39
(This information is given at the top of this page.).
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D Hardy: Having looked at your location, you clearly have a number of factors that could cause you difficulty with reception from Winter Hill!
I refer to the fact that you are down a slope which is tree covered, and you may be in a bungalow (so lower down).
Looking at Streetview photos (taken October 2008) most aerials are on the Romiley relay transmitter.
What I will say is that higher gain isn't always better because in order to increase gain, the acceptance angle (or "viewing" angle) is narrower. Thus, you are looking for good average quality across a narrower angle, whereas a wider acceptance angle may give better average quality. The strength can be increased by an amplifier, but if the signal is poor nothing can be done.
Good luck!
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Matthew: LCN is "logical channel number", i.e. LCN1 for BBC One, LCN2 for BBC Two etc.
Ensure that it is set to UK as an incorrect country setting can sometimes result in services not assuming their proper LCNs.
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D Hardy: You won't be able to diplex Moel-y-Parc and Romiley because the broadcast channels used don't allow. You could diplex MYP with Ladder Hill, if you can receive a good enough signal from it.
For more information on diplexing see:
Television Aerial Boosters / Amplifiers, Splitters, Diplexers & Triplexers
The three MYP COM channels are 48, 51 and 52. Romiley uses 41, 44 and 47. Ladder Hill uses 23, 26 and 29.
Diplexers generally split at 36, 38 or 51.
I can't advise on particular models as I'm not an aerial installer. However, ATV Sheffield provides a wealth of information and has an online shop. I know they sell Blake stuff and Vision stuff. Televes, Triax and Antiference are three other names that spring to mind.
I've come across these "overlap blocking filters" from Blake:
Overlap Blocking Filter from Blake UK
However, I'm not sure any will be of use to you. Whilst there is one that passes 48 to 62, there isn't one that passes 21 to 47. The filters will slope off so 48 is likely to be reduced a bit. The same effect is true of diplexers on channels adjacent to the split. I suspect that even if you could get filters with these passbands that 47 and 48 would not be useable because of the slope-off and the edge of the band.
There are notch filters available, but these are expensive. I know Televes do them, but you're talking over £20 for one which only does two channels.
Moel-y-Parc is due to have two new HD multiplexes soon, and these will be on 32 and 34. If you can pick them up where you are then, having diplexed a Ladder Hill aerial, you'll have filtered them out. What you're really looking for are two blocking filters 21 to 30 and 31 to 52 (or higher) so as to make your own diplexer.
One word of warning: In five years' time it could all change again. The two quasi-national HD muxes I mentioned - which use 31 to 37 exclusively - have been granted licences which could be revoked in 2018. This is because the 700MHz band (roughly 49 to 60) could be sold off for mobile services (5G maybe). This would obviously mean that transmitters on those channels will have to move downwards and probably those on lower channels shuffle down as well. There have been suggestions that the three COM multiplexes could become single frequency networks on channels in the 20s.
If this were to happen and you had diplexed a MYP aerial with a Ladder Hill one (with a 36 or 38 diplexer) then you would have to change it. Providing that Romiley was still Group B and on channels that your diplexer allowed, then you could simply switch your Ladder Hill aerial to face MYP and the MYP one to face Romiley.
With this in mind, I suggest that you get a Group A aerial that would be suitable for reception from MYP. Wideband yagis are a compromise and on Group A channels aren't as good as higher up the band:
Aerials, TV Aerial and Digital Aerial
The Group A aerial would be suitable for Ladder Hill now, whilst being suitable for MYP if it used Group A channels.
Alternatively, you could have a MYP aerial and Romiley aerial and keep them separate. You might use MYP as your main transmitter and switch to Romiley for regional programming. This would require a separate set-top box receiver. If you distribute the signals to different rooms you would require two distribution systems in order to have regional programming in each room (and of course you would need a set-top box in each room).
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Diane Skelly: As you are in an apartment block then that begs the question is it a communal aerial system you are using? If yes then enquiries should be made with neighbours to see whether they have the same issue - ensuring that it is Freeview they are referring to and not a satellite platform like Freesat or Sky. If others have the same issue then the problem is within the aerial system, therefore the party responsible needs to be made aware so they can organise repair.
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Kathy Webb: It is good question and I don't have an answer. I know that there was a plan to increase coverage of multiplexes like Teeside, which would have included bringing it to Saltburn by broadcasting it from Skinningrove. I'm not sure whether that's been shelved as digital radio switchover seems to be being put back further and further.
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Thursday 21 November 2013 4:43PM
Sherryl Irving: In a situation where multiple TVs fail which are all connected to the same aerial then suspicion must immediately fall on the bit that is common to them all - the aerial through to the splitter. Where there is a powered splitter involved then one not uncommon possibility is that this has failed. Even though its power light may be on, it doesn't mean that it is functioning correctly.
In such circumstances, to test, connect the incoming aerial feed directly to one of the output feeds going to one of the rooms.