The main AM transmitter on 738 kHz is on the western edge of Worcester and covers most of the two counties. Originally, there was another AM transmitter for Hereford on 819 kHz. That frequency was given up to accommodate a new commercial station for South Shropshire. However, due to adjacent channel problems with 828 kHz from BBC WM, 855 kHz was used for that licence. There is a more recent addition to AM, a small transmitter on 1584 kHz at Woofferton, just south of Ludlow on the A49. Although they have weaker FM signals compared to other BBC local radio transmitters, the 94.7FM signal can be heard clearly in the north of Bristol and even in Weston-super-Mare, as well as along the M4 from the Severn Bridge to Cardiff. The 738MW signal can also be heard in the north of Bristol. The station started broadcasting on DAB in 2013 with the new MuxCo Herefordshire and Worcestershire multiplex at the Bromsgrove, Ridge Hill and Malvern transmitter sites. This was extended in August 2016 with a further transmitter at Hereford and in September with another at Kidderminster.