You may have retune your Freeview equipment today in West and Southwest Wales
If you live in West and Southwest Wales, you might be affected by the following changes today, Wednesday 31st October 2012:
Aberystwyth: PSB2 C61 to C49
Beddgelert: PSB1 C62- to C50
Briton Ferry: PSB3
Broad Haven: PSB1 C61 to C51 8W to 16W PSB2 8W to 16W PSB3 8W to 16W
Croeserw: PSB1 C61 to C49 PSB1 C61 to C49
Cwrtnewydd: PSB1 2W to 4W PSB2 2W to 4W PSB3 2W to 4W
Dolgellau: PSB3 C62- to C50
Fishguard: PSB1 C61 to C49
Glyncorrwg: PSB1 C49 to C39
Haverfordwest: PSB1 100W to 200W PSB2 100W to 200W PSB3 C48 to C47 100W to 200W
Llwyn Onn: PSB1 7W to 14W PSB2 7W to 14W PSB3 7W to 14W
Mynydd Pencareg: PSB1 C61 to C49
Newport Bay: PSB2 C51+ to C41+
Pembroke Dock: PSB1 C61 to C49 5W to 10W PSB2 5W to 10W PSB3 5W to 10W
Penrhyn-Coch: PSB1 C62- to C50
Preseli: COM6 C49- to C39+ PSB3 C50+ to C40+
Rheola: PSB3 C62- to C50
Trefin: PSB1 50W to 100W PSB2 50W to 100W PSB3 50W to 100W
Tregaron: PSB2 C62- to C50
Ynys-Pennal: PSB1 4W to 8W PSB2 4W to 8W PSB3 4W to 8W
Ystumtuen: PSB1 C49- to C39 10W to 20W PSB2 10W to 20W PSB3 10W to 20W
If you are, you will need to do a retune on your Freeview equipment. You may find that you have to do a "first time installation".
Why are they increasing the transmission powers of the muxes at several transmitting stations?
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3:29 PM
Nicholas Willmott: In some cases, because another transmitter will now be sharing those frequencies, or will be once a neighbouring group is changed. In others, because this group will be temporarily sharing until another group is changed (these may be temporary). Then there also seems to be a small group that is changing due to greater-than-anticipated interference from a station that isn't being changed. Some in west Wales may be down to greater-than-expected interference from Ireland - one of Ireland's transmitters had to change frequency due to greater-than-expected interference from Preseli.
In this batch, Trefin and Llwyn Onn get a power increase on C22/C25/C28, which aren't frequencies used in the clearance programme. They will be joined in two weeks by Waunfawr, Bethesda North and Morfa Nefyn. My guess is that probably the commercial muxes from Blaenplwyf are going further than they were supposed to, unless it signals an upcoming 3 dB increase of Blaenplwyf COMs, which are 6 dB down on the PSBs, rather than equal or only 3 dB down as at most other transmitters. The only other transmitters I'm aware of that have a larger-than-usual difference between PSB and COM power output are Brougher Mountain (10 dB down) and Belmont (complicated).
Similarly, the power increases on C41/C44/C47 at Ynys Pennal and Cwrtnewydd probably are to do with interference from Wenvoe, or maybe Arfon.
Briton Ferry has a *temporary* increase from 4W to 32W. It will change frequency (to C40), and return to 4W, when Wenvoe retunes, expected in March next year. (Wenvoe does not itself use C61 or C62, but has to release frequencies for Mendip, which does.).
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3:48 PM
I have three Panasonic TVs of similar age. After the BBC "off" from the Upavon relay this morning, one set is receiving BBC Points West and the other BBC South Today. Both sets are receiving through the same aerial. I was able to reset one to Points West with a manual tune but not the other. Can somebody help resolve this issue?
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David Arthur: The transmitter went off, so why retune? If you hadn't done it, then you wouldn't have been in this position!
The question is, which other transmitter are you picking up?
Upavon uses channels 23, 29 and 26 so if the other BBC South (and any others) are coming from a transmitter above the 20s, then you can avoid them by unplugging the aerial after 30%.
Bring up the signal strength screen whilst on the erroneous BBC One South and it should tell you what UHF channel it is tuned to. Looking at the map, Shrewsbury is probably the most likely and it broadcasts on C57 (and is also vertically polarised). In which case the unplugging aerial trick will definately work!
If it is on C24, then that is Rowridge and will be more tricky.
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David Arthur: If it turns out to be Rowridge, then can you wipe the memory and then try manually tuning? It may be a "try and see" as to what works. For example, running it through with the aerial unplugged may or may not work; perhaps a factory reset is the only thing.
Another possibility might be to reduce the level of the signals such as by reducing the amplification level of the powered splitter (if you use one). Or the Upavon relay may be receivable with a set-top aerial which will hopefully make the Rowridge signal unreceiveable. Once you have it tuned, then go back to using the roof-top aerial as it was before.
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David Arthur: The objective of reducing the level of amplification is in the hope that the unwanted BBC South signal will be reduced such that it won't be picked up, but that the Upavon signal remains. This is the same objective as using the set-top aerial.
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9:11 PM
i live in Port talbot and had Orange mobile,landline and broadband ,now EE. Since 4g my broadband has slowed dramatically and keep losing connection altogether sometimes.
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7:53 PM
Llanybydder
hello! we cannot receive 'yesterday' transmissions any more. what do we need to do?
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pete's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
7:48 PM
Hi, can anyone help? We have a TV with built in freeview, and about 2 weeks we just lost loads of channels, we have re-tuned it several times but it makes no difference. we get BBC channels but not ITV and several freeview channels are also missing. We've checked the aerial and it seems fine, could it be the TV itself? Any advice very welcome, thanks...
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