A small number of Freeview HD receivers and DVB-T2 PC cards have detected audio streams, labelled "test", broadcast on the frequency earmarked for an third Freeview HD multiplex in North West England (UHF channel 37). However, the video element of the tests won't be available to ordinary viewers, as the UHD tests will use the High Efficiency Video Coding (HEVC) broadcast standard, which isn't used by current Freeview HD receivers.
The test, which will use a live stream from the World Cup, is only intended for a small number of BBC test locations and gives broadcast engineers an opportunity to try broadcasting a live UHD stream using HEVC over digital terrestrial television for the first time and to test new HEVC encoders. Receivers compatible with HEVC aren't expected to become commonplace until later this decade.
Reports suggest up to 36 Mbps of bandwidth are being consumed for the UHD tests. The BBC's Phil Layton has confirmed that the tests are also being transmitted from London's Crystal Palace and Central Scotland's Black Hill transmitters.
- Do you live in the Glasgow, London or Manchester area? Have you spotted test audio streams on your Freeview HD receiver? What make or model is it? Let us know via the comments section (Gmail/G+ or other Google account required). Alternatively tweet @a516digital or drop a line at facebook.com/a516digital