BBC will shortly be making changes to the satellite transponder that carries BBC One HD and BBC HD. The signal on this transponder is currently broadcast using a modulation scheme called “DVB-S”. On 6th June 2011 they will be upgrading to a newer “DVB-S2″ scheme which is a more efficient way of operating the transponder and it creates more capacity from the same amount of spectrum.
The change will mean you may need to put your Freesat receiver or television into standby for 30 seconds (on or after the 6th June) and then restart to continue to receive the two BBC HD channels. If the channels are still unavailable then carry out a ‘freesat channel retune’ or a ‘first time installation’ (both available from the menu options). Full instructions can be found in the manual for your box or TV. Further help with retuning can be found at www.freesat.co.uk or by calling their customer support team on 08450 990 990.
Channel 4 used a similar principle in order to make more space available to introduce Channel 4 HD to Freesat, with talk of more of their HD channel family coming soon.
This may mean potentially improve bitrate quality across the BBC HD channels…but don’t hold your breath