Ofcom permits 8k mode on DTT

Ofcom has revised its reference parameters for digital terrestrial TV transmissions by permitting the use of the 8k transmission mode, which is more robust against localised interference from household appliances.

The regulator indicated back in 2005 that some regions – including Anglia and Meridian – would have to switch from the current 2k mode to 8k after analogue switchoff to permit the creation of a viable single frequency network.

Concerns have been raised that some early types of DTT receiver – including those supplied by the now-defunct pay TV operator ITV Digital – will not support 8k mode.
However, Ofcom plans to work with the switchover agency to ensure people are notified of any potential problems.