All posts by Dave Lindsay
Below are all of Dave Lindsay's postings, with the most recent are at the bottom of the page.
P. Kieran Ward: I can't advise you much more as I've never used a satellite receiver before!
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Frank: I'm not familiar with the i-Can, but if it allows manual tuning, then tune to UHF channel 39. If there is a setting on the manual tune screen for DVB-T or DVB-T2, then ensure that the latter is selected.
It is a good idea to confirm that the receiver you have will receive RT channels so as not to have work done on your aerial if it isn't that that's at fault.
On the subject of aerials and the NI Mux (RT/TG4), there are two things to be aware of:
1. Like the former Channel 5 analogue signal, the NI Mux is broadcast from Black Mountain rather than Divis. For many people the two are on close enough bearings such that a single aerial will work for both. At your location Black Mountain is 5 degrees anti-clockwise of Divis.
2. The NI Mux is on C39 which is officially just outside of Group A. It is close enough that some aerial will work.
See this page which illustrates the point:
Gain (curves), Again
Along the bottom are UHF channel numbers (frequencies) and the Divis ones are from 21 to 29. The traces are just examples and may not be the same as that of your aerial.
However, the gain outside-of-group (C39 is outside of Group A) for contract aerials can be very inconsistent.
Group K goes further up than Group A, so if you have your aerial replaced, that might be the thing to go for. A wideband yagi aerial isn't really suited to Group A transmitters because the gain is lower on Group A channels.
If possible, I suggest that you see if you can get your receiver tuned to the NI Mux, perhaps by connecting it to your neighbour's aerial.
If it doesn't receive RT when you connect it to your aerial, then try turning it slightly anti-clockwise, observing the signal strength screen whilst on the tuned RT channel or whilst on manual tuning screen with C39 selected (and DVB-T2 mode selected if applicable). When you do this, if you don't press the button to scan/search the channel it will hopefully (as many do) give an indication of signal strength, which means that you can use it as a signal meter.
For information on aerials, see ATV's site:
ATV`s Choice Of Aerials for digital TV
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David Anderson: For Girvan transmitter your aerial should be vertical. It is on a bearing of 217 degrees, whereas Divis is at 229 degrees which is very close. That said, Divis is horizontally polarised.
If you are picking up BBC Northern Ireland on UHF channel 27 (look at the signal strength screen whilst on BBC One), then you are receiving it from Divis.
The Girvan transmitter uses high channel numbers and Divis uses low ones which will probably be found first during the scan. Have the aerial unplugged for the first 50% of the scan.
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Jacqueline Fowler: I posted an explanation here in response to Alan:
Bilsdale (North Yorkshire, England) full-Freeview transmitter | ukfree.tv - 10 years of independent, free digital TV advice
A number of other people have reported exactly the same issue.
First off, if your TV has manual tuning you should attempt to tune to the missing multiplex (a multiplex is a single signal that carries multiple services).
Go through to the manual tune function (if there is one) and tune to UHF/RF channel 46. The multiplex on C46 carries Dave, Pick TV and others.
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David Anderson: Failing that, manually tune to UHF channel 50 for BBC and 59 for STV, C4, C5 etc.
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Mal: Of course there is a reason!
THere is now a two-tier terrestrial transmitter network. About 90% of the population can receive all the channels but the other 8.5% who can receive terrestrial TV can only receive the Public Service channels because the Commercial broadcasters don't consider it worth their while to serve them.
See:
Londonderry transmitter | ukfree.tv - 10 years of independent, free digital TV advice
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Bethan Williams: If the box has a manual tune function, then you need to go through to it and enter UHF/RF channel 57 for BBC from Llanddona.
Go to ITV1 and bring up signal strength screen and it should say that it is tuned to C60 for Llanddona. If it's not, then let us know what number it is tuned to.
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Clamityjane: For The Wrekin, you will probably have needed to have your old Group A aerial installed for analogue replaced.
The COM channels (ITV3, ITV4, Film4 etc) are on lower power than the PSBs.
PSB1 (BBC standard definition) from The Wrekin is co-channel with Storeton. Also, PSB2 (ITV1, ITV2, Channel 4 etc) from The Wrekin is co-channel with Storeton. Storeton is vertically polarised, and I'm not sure whether that could affect you at your location.
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Sunday 18 November 2012 10:31AM
morleyresident: The following is for if you don't have manual tuning but if you are having difficulty getting the aerial out after C52 but before C54.
If your receiver does not have manual tuning, but has two types of scan:
1. A full scan or "first-time" install, where it wipes all what's stored.
2. One to add new services/channels which doesn't wipe what is stored but just adds any new that are found, then you might use that to your advantage:
Run the number 1 type scan through with the aerial unplugged, plug in at 30%. Unplug at 58%. The objective of this is to pick up the PSBs from Emley. It doesn't matter if it picks up one of the COMs, the point is to get Emley's PSBs stored in their proper logical channel number (LCN) positions (i.e. 1=BBC One, 2=BBC Two).
Having done this, then run the scan to add new services (type 2) and have the aerial unplugged. Plug in at 50% and unplug at 67%. This time if you happen to have it plugged in for C54 then that will (hopefully) not assume LCN 1, 2 etc but go in the 800s because positions 1, 2 are already taken.