All posts by Chris.SE
Below are all of Chris.SE's postings, with the most recent are at the bottom of the page.
Gerry Keenan:
Having looked at your situation a little more closely, you are highly unlikely to be receiving the New Galloway transmitter in Ayr !!
As you haven't given a full postcode, it's impossible to advise on any issues with your most likely transmitter.
If you are actually receiving from Caldbeck, that is listed for Planned Engineering.
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Gerry Keenan:
Darvel is the most likely main transmitter for most of Ayr. You may also get Black Hill in some southern parts of Ayr, you could even be getting the Ayr South relay.
All 3 transmitters are listed for Planned Engineering though none have been listed as being off-air recently.
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Steve Connelly:
Yes, the BBC have limited DAB coverage in Galloway with transmitters at Dumfries South, Thornhill, Barskeoch Hill (to the east of Castle Douglas), Langholm, and Moffat North
AFAIK there is no Commercial DAB coverage in the area.
You must be unlucky not to get FM (you haven't given a postcode for your locale) there are BBC transmitters at Girvan, Sandale (sw of Carlise), Kirkconnell, Darvel and Black Hill which give coverage in various parts of Galloway.
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Fred Hotchen:
AFAIK there are no commercial DAB multiplexes transmitted from Chatton, only the BBC National mux.
LBC is on the D1 National Commercial multiplex which doesn't have as widespread a coverage.
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Colin Rogers:
It's still on LCN69 when I last checked, it's just moved multiplex as did RealityXtra LCN68, an unannounced change by Freeview (they rarely mention mux swaps which is what the broadcaster has done).
LCN69 HorrorXtra is now on the Local multiplex, so if you don't get the Local Mux from Mendip (UHF C30) it'll be missing. LCN68 is now on the SDN multiplex UHF C48 on Mendip.
You may need to retune both those multiplexes if you receive from Mendip. If you are further SW, no other transmitter has a Local multiplex.
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C.Williams:
That sounds like a typical cop-out from the Freeview bots that answer the phones (who I might add generally have no technical/engineering qualifications!).
Those two channels moved from the Local multiplex to the ArqB/COM6 mux a while ago where they are working fine. Great! TV moved on June 21st, Great! Romance moved on July 19th.
The "remnant" channels on 792/793 ultimately showed "retune" information.
There have also been a number of other commercial channel changes since those dates.
It sounds like you probably need a full retune. As there is engineering work at present, signals may not be 100% reliable and manual retuning would be the best option but only if you don't have pixellation on the channels.
I would clear all your old current tuning first by unplugging the aerial, do an automatic retune and no channels should be found. Plug the aerial back in and do a manual retune.
In the multiplex order BBCA/PSB1, D3&4/PSB2, BBCB HD/PSB3, SDN/COM4, ArqA/COM5, ArqB/COM6
Oxford UHF channels are for the main multiplexes are C41, C44, C47, C29, C37 & C31
If you haven't moved since 2011, the Local mux L-OFD for you it is on C22, otherwise if you are to the East of the transmitter it's on C46.
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nick :
Hi there. I assume you are obviously pointing them at Sudbury.
1) Try a different spot and see if the Quality figure gets better or worse. If it gets worse, you may possibly be getting near some source of interference
2) Try rotating the aerial to different compass bearings and see if you can identify/receive and other signal on C37. You may have to move tyo another spot if buildings get in the way.
3) Try all the above with the aerial polarisation vertical
4) Try with different "in between" polarisations.
Obviously with a number of those, I'd expect the Sudbury signal to reduce in both Strength and Quality, but there may be cases where there's little drop in Signal but significant drop in Quality.
There will be points where the Quality is sufficiently low, the Signal will become zero (it's become just noise or possibly interference).
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The_Highwayman:
RealityXtra LCN68 is now on SDN/COM4, HorrorXtra LCN69 is now on the Local multiplex.
This was a change made by the broadcaster and even Freeview didn't mention it amongst the other minor channel changes this month. (They never give details of the multiplex in their "updates" in any event, they just talk about "increased coverage" or "decreased coverage" !!
Apparently, although the channels swapped multiplexes, the broadcaster forgot to swap the EPG immediately so had the listings for the sister channel.
They appear to be correct now.
You must be in a poor reception location to not get the Local mux (you haven't given a full postcode so I can't advise on that). Because of the transmission mode used by the Local multiplex it will propagate almost as well as the main signals using less power.
It looks as though the Planned Engineering is likely to continue next week.
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The_Highwayman:
As far as receiving the Local mux is concerned, it's not a case of sensitivity of the receiver, I should have added that the Local mux is beamed roughly north-north-easterly from Mendip, not a very wide beam, see the Red plot on the polar diagram towards the top of the page. So if you off to the East or the West you may not get a signal.
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Tuesday 19 September 2023 12:57PM
Gerry Keenan:
As you've probably seen from the report before your post, there was a fault. However there is nothing currently listed by the BBC or Arqiva. Weather conditions may also have had a temporary impact.
At the time, if you happened to retune when you had no signal or badly pixelated pictures (never advised) it's probably cleared most/all of your correct tuning.
Apart from checking your aerial is still looking intact and pointing correctly and your downlead isn't flapping in the wind, coax connections plugged in correctly with no corrosion etc. then try a manual retune on New Galloway's UHF channels as listed at the top of this page.