The BBC has changed some of the frequency parameters for its HD channels.
Frequency: 10,847MHz (vertical polarity)
Modulation: DVB-S2, QPSK
Symbol Rate: 23.0
Changes are happening to the BBC HD channels on Astra 2D.
Sky HD users should not have any problems, as the Sky HD boxes will automatically update.
Some Freesat users may have to reset their Freesat HD boxes, or perform a Freesat scan.
Users of other "generic" HD receivers, will have to rescan the BBC HD frequency, ensuring their receivers work with the new DVBS2 transmision standard.
If you are getting the "no satellite signal" being received then a simple receiver reboot may cure the problem.
More information :
BBC HD Frequency Changes June 2011