Digital Spy

Search Digital Spy
 

DS Forums

 
 
 

channels down


Reply
Thread Tools Search this Thread
Old 08-07-2013, 23:16
Jamesollier18
Forum Member
 
Join Date: May 2002
Posts: 1,716

Have freeview in Salford get from winter hill hd channels gone plus a few others from different mux Has any one else got problems at the moment
Jamesollier18 is offline   Reply With Quote
Please sign in or register to remove this advertisement.
Old 08-07-2013, 23:27
Jamesollier18
Forum Member
 
Join Date: May 2002
Posts: 1,716
Some have come back must be working on something weather its the 4G thing cannot be the heat
Jamesollier18 is offline   Reply With Quote
Old 08-07-2013, 23:35
Jamesollier18
Forum Member
 
Join Date: May 2002
Posts: 1,716
Most back up now hopefully that will be that

spoke to soon gone again
Jamesollier18 is offline   Reply With Quote
Old 08-07-2013, 23:38
jj20x
Forum Member
 
Join Date: Oct 2011
Posts: 1,102
It does sound like work at the transmitter site.
jj20x is offline   Reply With Quote
Old 09-07-2013, 00:02
elb0wf4ce
Forum Member
 
Join Date: Jun 2011
Location: P'boro
Posts: 4
Waltham is a nightmare tonight as well, no signal for anything currently. No transmitter work reported.
elb0wf4ce is offline   Reply With Quote
Old 09-07-2013, 06:40
Geoff_W
Forum Member
 
Join Date: Jun 2004
Location: Nottingham
Posts: 318
No service at all this morning on Nottingham Tx which I think gets its feed from Waltham. Can't find any officially reported problems on this Tx either.
Geoff_W is offline   Reply With Quote
Old 09-07-2013, 06:41
N.Dean
Forum Member
 
Join Date: Dec 2007
Posts: 738
The weather ( high pressure ) is causing VHF and UHF signals to reach beyond their normal service areas and cuase intereference to local signals.
N.Dean is offline   Reply With Quote
Old 09-07-2013, 07:12
Geoff_W
Forum Member
 
Join Date: Jun 2004
Location: Nottingham
Posts: 318
All services are back now. Haven't been able to find out what the problem was, though.
Geoff_W is offline   Reply With Quote
Old 09-07-2013, 07:24
albertd
Forum Member
 
Join Date: Apr 2005
Location: Crawley, W. Sussex
Posts: 7,002
The weather ( high pressure ) is causing VHF and UHF signals to reach beyond their normal service areas and cuase intereference to local signals.
Seems like a very probable explanation. The latter few posts of this thread show that people down the East Coast were getting TV from Germany yesterday.
albertd is offline   Reply With Quote
Old 09-07-2013, 08:39
xtaz
Forum Member
 
Join Date: Mar 2004
Location: Bristol
Posts: 258
Yeah. I have no problems with my TV reception, but I am having major problems listening to the radio on the way into work in the mornings. The reception has gone terrible and the local stations keep getting wiped out completely by other stations. Definitely the weather allowing transmissions to go much farther than usual.
xtaz is offline   Reply With Quote
Old 09-07-2013, 08:44
Nigel Goodwin
Forum Member
 
Join Date: Apr 2006
Location: North Derbyshire
Posts: 36,812
No service at all this morning on Nottingham Tx which I think gets its feed from Waltham. Can't find any officially reported problems on this Tx either.
There's no worthwhile source of information any more, not since the BBC changed their sensible information site to this ludicrous 'enter your postcode' rubbish.

However, as usual for this time of year, it's down to the weather - can't people remember all the previous summers where you commonly get weather related reception problems?.
Nigel Goodwin is offline   Reply With Quote
Old 09-07-2013, 08:59
aciddad
Forum Member
 
Join Date: Apr 2006
Location: Derby
Posts: 98

Three muxes were down this morning; SDN, Arq A and BBC B.
SDN was back about 8:12 and the other two at about 9:45.
Does that look like weather related problems? I don't think so.

Edit. As I posted BBC B went off again.
aciddad is offline   Reply With Quote
Old 09-07-2013, 09:10
xtaz
Forum Member
 
Join Date: Mar 2004
Location: Bristol
Posts: 258
Does that look like weather related problems? I don't think so.
Sounds exactly the same as what I'm experiencing with the radio to be honest. Reception comes in loud and clear one minute, a couple of minutes later it fades out to static, a couple of minutes later it comes back loud and clear again, a couple of minutes later another station comes over the top of it. And so on. It's the kind of pattern you get when radio waves are bouncing off the charged layers in the atmosphere. As the layers move around signals are bounced around in different areas causing reception to vary every minute. This kind of thing: http://en.wikipedia.org/wiki/Sporadic_E_propagation
xtaz is offline   Reply With Quote
Old 09-07-2013, 09:47
Nigel Goodwin
Forum Member
 
Join Date: Apr 2006
Location: North Derbyshire
Posts: 36,812
Three muxes were down this morning; SDN, Arq A and BBC B.
SDN was back about 8:12 and the other two at about 9:45.
Does that look like weather related problems? I don't think so.
It looks EXACTLY like weather related problems
Nigel Goodwin is offline   Reply With Quote
Old 09-07-2013, 09:49
Bizman
Forum Member
 
Join Date: Aug 2011
Location: Taunton, Somerset
Posts: 224
There's no worthwhile source of information any more.....
Not so, choose your transmitter from http://www.ukfree.tv/closedown.php and there is a wealth of info.
Bizman is offline   Reply With Quote
Old 09-07-2013, 10:12
technologist
Forum Member
 
Join Date: Feb 2004
Location: London
Posts: 5,619
The Glorious weather means that antenna and feed work ( and painting the structure) can go on .... and so Arqiva are making good use of what may be a limited opportunity...
But the BBC tool http://www.bbc.co.uk/reception/transmitters/today.shtml
is good .. particularly if you do not know which transmitter serves your area.
technologist is offline   Reply With Quote
Old 09-07-2013, 10:32
albertd
Forum Member
 
Join Date: Apr 2005
Location: Crawley, W. Sussex
Posts: 7,002
It looks EXACTLY like weather related problems
Yes, I quite agree. What aciddad is describing fits exactly with what we used to experience here sometimes during lifts after Belmont's DSO, but before Crystal Palace's.
albertd is offline   Reply With Quote
Old 09-07-2013, 10:42
N.Dean
Forum Member
 
Join Date: Dec 2007
Posts: 738
Three muxes were down this morning; SDN, Arq A and BBC B.
SDN was back about 8:12 and the other two at about 9:45.
Does that look like weather related problems? I don't think so.

Edit. As I posted BBC B went off again.
If your signal strength is higher than normal and its quality is lower than normal, you are probably suffering from interference.
Some TVs can display this information.
N.Dean is offline   Reply With Quote
Old 09-07-2013, 15:54
aciddad
Forum Member
 
Join Date: Apr 2006
Location: Derby
Posts: 98
Exactly, and there was ZERO signal strength which I'm fairly certain means the muxes were down, not being interfered with.
I know that before DSO channels carrying analogue would show good signal but, obviously, no quality. I'm sure that an interfering signal would do the same.
aciddad is offline   Reply With Quote
Old 09-07-2013, 16:34
albertd
Forum Member
 
Join Date: Apr 2005
Location: Crawley, W. Sussex
Posts: 7,002
Exactly, and there was ZERO signal strength which I'm fairly certain means the muxes were down, not being interfered with.
I know that before DSO channels carrying analogue would show good signal but, obviously, no quality. I'm sure that an interfering signal would do the same.
The problem with that theory is that once you get more than one transmitter being received on the same channel, all sorts of totally unpredictable phasing situations can occur and indicated signal levels can go all over the place.

Prior to DSO at Crystal Palace, the then higher powered transmitter at Belmont (both digital of course) would be received here on the same channel at times and often the indicated signal did indeed drop away to an apparent zero.

When there are reports of long distance signals being received, as there have been in the last few days, it is a fairly safe bet that most reception problems will be the result of it. Also, it is most important not to do any retuning under those circumstances as that will just remove all trace of the wanted transmitter from the TV/box and so it will not reappear when conditions return to normal (not that I am saying that you did that, but it is something to remember).
albertd is offline   Reply With Quote
Old 09-07-2013, 16:44
jj20x
Forum Member
 
Join Date: Oct 2011
Posts: 1,102
When there are reports of long distance signals being received, as there have been in the last few days, it is a fairly safe bet that most reception problems will be the result of it.
It's a possibility, just exercise a degree of caution. The fact that there are unusual reception conditions at the moment doesn't mean that work at the transmitter sites isn't also being done.
jj20x is offline   Reply With Quote
Old 09-07-2013, 17:05
albertd
Forum Member
 
Join Date: Apr 2005
Location: Crawley, W. Sussex
Posts: 7,002
It's a possibility, just exercise a degree of caution. The fact that there are unusual reception conditions at the moment doesn't mean that work at the transmitter sites isn't also being done.
Perfectly true, but fairly unlikely. Long lasting transmitter work is not too common, especially now that all transmitters have had much of their equipment (transmitters and aerials) renewed during the changeover period to digital.

Either way, there is nothing that users can do to change things, be it due to a lift or to work.
albertd is offline   Reply With Quote
Old 09-07-2013, 17:46
albertd
Forum Member
 
Join Date: Apr 2005
Location: Crawley, W. Sussex
Posts: 7,002
It's the kind of pattern you get when radio waves are bouncing off the charged layers in the atmosphere. As the layers move around signals are bounced around in different areas causing reception to vary every minute. This kind of thing: http://en.wikipedia.org/wiki/Sporadic_E_propagation
To clarify, ionospheric style activity in the upper atmosphere such as Sporadic-E does not affect UHF TV at all. Its effects rarely reach even as high as 100MHz, let alone 450MHz and above.

When conditions affect TV and VHF radio, it is a completely different mechanism in the much lower levels of the atmosphere known as tropospheric propagation.
albertd is offline   Reply With Quote
Old 09-07-2013, 21:08
Winston_1
Forum Member
 
Join Date: Oct 2007
Posts: 3,867
And going back to post 2 it is not 4G as 4G is not in service yet on 800MHz.
Winston_1 is offline   Reply With Quote
Old 09-07-2013, 21:23
jj20x
Forum Member
 
Join Date: Oct 2011
Posts: 1,102
Perfectly true, but fairly unlikely. Long lasting transmitter work is not too common, especially now that all transmitters have had much of their equipment (transmitters and aerials) renewed during the changeover period to digital.
There's other work such as regular maintenance, possible transmitter work in preparation for local tv services etc. The timing of the OP's loss off service.

Just assuming tropospheric lift is causing the problem is on par with blaming 4G just because it's been reported in the media. (I'm not suggesting that you are doing this, just a general point).
jj20x is offline   Reply With Quote
 
Reply



Thread Tools Search this Thread
Search this Thread:

Advanced Search

 
Forum Jump


All times are GMT. The time now is 20:48.