Menu buttonMENU    UK Free TV logo TV
securesearchsettings

 

 

Click to see updates
To join, leave or change ukfree.tv updates by email, enter your email address here:
 

BBC regions and nations - some notes

It is worth looking for a moment at how the BBC nations and regions network works and some of the issues arising

It is worth looking for a moment at how the BBC nations and reg
published on UK Free TV

BBC regions

Scotland, Wales and Northern Ireland

The BBC call three parts of the UK "nations": the country of Scotland, the principality of Wales and province of Northern Ireland.

In these "nations" the BBC provides single special versions of the first two television channels. Only in Scotland does this differ from the channel 3 network, where Scotland is broken down into three segments by STV, and the ITV Border covers the south of the country.

In the "nations" there are substantial changes from the "network" versions of BBC One and BBC Two, including special programmes during peak hours, time shifted schedule slots for network programmes and local presentation.

English regions

In England it is now exceptional for there to be BBC regional programmes, aside from the local news and sport programmes. The BBC English regions follow the same transmitter regions as ITV1, with the major exception that the BBC Newcastle also covers the ITV1 TTTV and Border England areas.

Both the BBC and ITV provide all the English regions on satellite, and to do this it is necessary to broadcast each region as a separate channel. For this reason, the BBC has collapsed BBC Two to a single English region for all digital platforms.

Due to the nature of the digital multiplexing system used for Freeview, BBC TWO English regions were never implemented on the terrestrial system, and have never been made available to the "cable headends".

Until switchover is complete, the BBC still has the ability to run the pre-digital era English regions on the analogue network. This means the newest regions collapse on BBC Two to their historic parent so BBC Oxford shows the Southampton service, BBC Cambridge shows the Norwich programme and BBC Hull has the Leeds feed.

Channel Islands

The BBC Channel Islands service is an opt-out from BBC Plymouth, this differs from channel 3 where ITV1 Channels Islands is a Meridian opt-out.

Exceptional situations

Emergency opt-outs on BBC TWOThe consequence of the above means that on the rare occasions that regional news cannot be shown as normal on BBC One - such as a national sporting even overrunning - the follow happens:

  • Scotland, Wales, Northern Ireland - correct regional news
  • Digital English regions - BBC London News seen
  • Analogue viewers: correct regions until switchover, except for Cambridge, Oxford, Hull and Channel Islands where Norwich, Southampton, Leeds and London are seen.


Emergency BBC service on BBC One

As mentioned above, the BBC regions are opt-outs from the "network" or "sustaining national service".

Sometime, due to technical faults, or when high atmospheric pressure or atmospheric turbulence caused by very heavy rain causes the terrestrial transmission chain is broken the normal transmission chain is broken.

Rather than showing a blank screen, the BBC has a number of backup systems that will use an alternative feed.

When this happens, the BBC London service is seen (the only rare exception to this is a failure of BBC London which brings in the service from BBC Southampton).

As a consumer, of course, you can switch your Sky or Freesat receiver to pull in any BBC region from the Astra 1N satellite service.

However, DVB-S digital satellite service is not compatible with the backup system used for the terrestrial analogue and Freeview network.

The national (or network BBC channels) are provided as a single digital multiplex and are not de-muxed and re-muxed when the signal is re-transmitted locally in the event of terrestrial signal loss.

All of the BBC channels are statically multiplexed ("statmuxed") on a region-by-region basis as these devices are costly to provide.

If the BBC were to support a complete backup multiplex for each region (thus allowing a TV signal to continue without retune or drop-out), that would mean 16 complete new satellite transponders which would cost a huge amount of money for a service that would not be used outside times of exceptional failure.

Alternatively, the BBC could take a regional feed from the feeds on Astra 1N and rebuild the multiplex for each region (and relays) but this would require de-muxing and re-muxing equipment in around over 1000 transmitters, which would also be highly expensive and difficult to manage.

Details of Intelsat 907 transponder 64 (DVB-S2 11495 V 44100-9/10 QPSK):

Intelsat 907 at 27.5°W - LyngSat

BBCA multiplex backup



BBCB multiplex backup

  • BBC HD UK MPEG-4/HD
  • ITV 1 MPEG-4/HD
  • Channel 4 UK MPEG-4/HD
  • BBC One MPEG-4/HD


Help with TV/radio stations?
Can I receive British Eurosport for free?1
What has happened to TCM?2
How do I receive all of uktv+ channels (gold, style, food etc) using my Freeview3
Can I watch for free Financial channels such as CNBC or Bloomberg?4
Is sky|one going on Freeview?5
In this section
The lower the channel number in the guide, the more viewers it gets ... Right?1
New Freeview and Freesat channel TruTV to start soon2
Why does BBC Worldwide not make more profit for the Licence Fee payer?3
How do the new ITV local news regions compare with the BBC?4
A short history of Border TV5
Want more local news? ITV is going to provide it6

Comments
Sunday, 13 February 2011
P
Phil Blair
9:07 AM York

My broken M&S tv was replaced under guarantee for a broken integrated dvd on 12/2/11. The old tv had a full range of digital stations when taken away (31/01/11) but cannot now pick up any.
The TV tech people tell me that this is due to transmitter change over work that is leaving the digitalsignal too weak for reception though the analogue is OK (My aerial is directed at Emley Moor though I'm right on the border for Bilsdale).
When can I expect to get normal service back please? thanks Phil

link to this
Phil Blair's 1 post GB
Phil's: Freeview map terrain plot frequency data R&TI Service digitaluk trade DAB coverage
Briantist
9:52 AM

Phil Blair: Please contact M&S and ask them to provide you with a working set. There has been no chances to the broadcasts since 12/2/11.

link to this
Briantist's 38,757 posts Owner Owner GB
Mark A.
11:31 AM

Good read, never knew about BBC Southampton being the backup to BBC London.
Are you going to add a "ITV and Channel4/S4C regions and nations" page?
If you do, you may want to include the satellite service frequencies etc or a link to http://www.lyngsat.com
as only the local ITV region and ITV London are listed in the EPG. (RH163LB)

link to this
Mark A.'s 338 posts Gold Gold GB
Briantist
11:41 AM

Mark A.: I did cover the ITV and Channel 4 regions on the ITV1+1 11 January 2011 (at last) | ukfree.tv - independent free digital TV advice page.

I might do some more work on them to link into Lyngsat. The search box on ukfree.tv also searches Lyngsat.

link to this
Briantist's 38,757 posts Owner Owner GB
Sunday, 6 March 2011
G
Geoff
8:05 PM

Is there any reduction in the signal on channel 52 BBC channels seem to be a lot weaker than all the others

link to this
Geoff's 1 post GB
Briantist
9:46 PM

Geoff: No, there isn't, as a general rule. You have not given very much to go on really. See Single frequency interference | ukfree.tv - independent free digital TV advice .

link to this
Briantist's 38,757 posts Owner Owner GB
Sunday, 8 April 2012
A
Alex Gumbrecht
11:12 AM Farnborough

I'm in North Hants and registered for the Switchover Help Scheme. But after the Hannington switch-over the installer visited and said that the signal from Hannington was too weak to use (local Freeview blind-spot). I was advised to keep using my present aerial pointed at Crystal Palace, and to re-check Hannington signal strength after Crystal Palace completion on 18th April. For practical reasons Freesat is not an option for me.

After 4th April I retuned my TV. The signal strengths reported in the menu system show my BBC channels are very strong and the transmitter reported as London. However on a number of channels, ITV1 for example, the signal strength is very strong but the transmitter is reported as Berks & North Hants.

Is the second Crystal Palace reconfiguration due 18th April likely to influence reception from Hannington (eliminate dead spot)?

link to this
Alex Gumbrecht's 3 posts GB
Alex's: Freeview map terrain plot frequency data R&TI Service digitaluk trade DAB coverage
Dave Lindsay
11:34 AM

Alex Gumbrecht: Until 18th April Hannington's SDN (ITV3 etc) on C41 and ArqB (Yesterday etc) on C47 are on low power (particularly low in your direction) so as to protect against interference with Guildford transmitter which uses the same channels and which relinquishes them at final switchover on 18th.

If you prefer Hannington, then I would point the aerial at it and attempt retune.

By the way, due to the channel allocations for those two transmitters, you should be able to get one and not the other during the scan. To get CP and not Hannington, unplug the aerial lead when the scan gets to 30%. And to get Hannington and not CP start the scan with the aerial unplugged and plug in at 30%.

If you are testing each for signal strength, then the aerial should be facing the one you are tuned to.

link to this
Dave Lindsay's 5,724 posts Platinum Platinum GB

Your comment please
Please post a question, answer or commentUK Free TV is here to help people. If you are rude or disrespectful all of your posts will be deleted and you will be banned.







Privacy policy: UK Free Privacy policy.