Menu buttonMENU    UK Free TV logo Freesat
securesearchsettings

 

 

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

BBC HD to switch to DVB-S2 on 6th June 2011

The BBC will switch to the higher-capacity modern modulation scheme for the BBC HD and BBC One HD channels on satellite.

The BBC will switch to the higher-capacity modern modulation sc
published on UK Free TV

The high definition (HD) television channels on satellite require a lot more bandwidth (number of bits per second) than the standard definition (SD) ones, as you might expect.

However the additional capacity required is reduced in two ways. First the MPEG-4 compression system is used (rather than MPEG-2) and generally the DVB-S2 modulation system increases the bandwidth of each satellite transponder.

Generally speaking, around nine SD television channels can be carried on a transponder in DVB-S mode, and four HD channels on one in DVB-S2 mode.

For historical reasons, the BBC's Astra 2D transponder 50 has been providing BBC One HD and BBC HD (and also ITV1 HD Merdian South) in the DVB-S mode, and this has used all the capacity on the transponder, because of the lower bitrate.

The changes

One 6th June 2011, the BBC will switch the transponder to DVB-S2. If you watch using Sky+HD, Virgin Media or Freeview HD you will not have to do anything.

If you use a branded Freesat box (or TV set), you may need to put it into stand-by mode for 30 seconds on 6th June. If that doesn't work, perform a 'first time installation'.

Update: Some Panasonic Freesat boxes are unable to deal with the change - see comments below

If you are using a unbranded Freesat box, you may find that you also have to do a 'first time installation' to get the channels back.

Some older satellite equipment will not support DVB-S2. If you can't watch Channel 4 HD, then you will no longer be able to watch the BBC HD channels.

Sky HD, Freesat HD EPG issues

Currently BBC One HD cannot automatically replace BBC One in the Sky EPG at position 101, because there are 15 regional versions of BBC One, and only a single BBC One HD 'stream' on the satellite.

BBC Two carries four regions for England, Scotland, Wales and Northern Ireland. For a BBC TWO HD to appear in the Sky EPG at position 102, the BBC would need to provide four versions of BBC TWO HD.

All the other BBC channels are national, and have no regional components. BBC Three timeshares with CBBC, BBC FOUR timeshares with CBeebies, plus there is BBC News, BBC Parliament and BBC Alba.

The extra capacity found by moving to DVB-S2 could allow the BBC to provide BBC Three, BBC Four, CBeebies and CBBC channel in HD, and these could be provided in the "usual" EPG slots for Sky HD and Freesat HD users, which would put them on the lower numbered channels nearer the top of the guide.

Help with Free satellite?
Can I stop paying Sky and use my satellite receiver to get Freeview ?1
What can I do when my Sky Digibox says 'No Signal' or 'Technical fau2
My Sky box has a "no signal message" - what do I do?3
How do I change the RF output channel on a Sky Digibox?4
Can I use my ex-contract sky digital satellite receiver to get Freeview channels5
In this section
Show me the 55 TV channels have moved to the new Astra 2G satellite 1
Good news for Freesat? Astra 2E satellite launched2
No satellite signal? Check your dish for snow!3
New satellite footprints page4
BBC satellite changes: radio, BBC ONE HD, Red button reduction 12-15 October 2015
Changes to BBC HD transmissions on Astra satellites on 20 September 20126

Comments
Tuesday, 30 October 2012
J
jb38
7:16 AM

SteveD: Have a look in your TV's user manual / specifications and check under tuner if DVB-T2 is seen listed, because if its only DVB-T then its not capable of picking up an HD signal, or alternatively this aspect can be checked out if you provide the model number of the set.

However if you have seen the TV listed as "HD Ready" then this only means that its capable of producing HD images and "not" that it can actually receive them via an aerial, the HD images being from an external device, e.g: HD set top box coupled into the TV via the HDMI input.

The "HD Ready" definition being something I disagreed with right from the start as it was just bound to cause confusion amongst potential purchasers of these devices, and indeed already has done to many!

link to this
jb38's 7,173 posts Platinum Platinum GB
Wednesday, 31 October 2012
S
SteveD
7:37 PM Alton

I have a Panasonic TX-P42G10B F/SAT PLASMA H. The specifications only mention DVB-S/S2 and DVB-T. Looks like I've been conned, right? Maybe I should have a go at Panasonic and/or John Lewis?

link to this
SteveD's 3 posts GB
SteveD's: Freeview map terrain plot frequency data R&TI Service digitaluk trade DAB coverage
J
jb38
9:38 PM

SteveD: Well, the TV is capable of receiving HD transmissions but only via Freesat, and as you mention reception via Freeview is only in standard definition. Of course there are one or two other brands (Samsung or LG) with similar odd ball combinations like that.

link to this
jb38's 7,173 posts Platinum Platinum GB
Select more comments

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.