Currently, the transmitters cater for most of the digital terrestrial TV subscribers in the towns of Pontardawe and Alltwen and in the nearby villages of that section of the Tawe valley.

When it was built, Pontardawe transmitter re-radiated a signal received off-air from Kilvey Hill about 12 km to the southwest.

After the switchover process, analogue channels had ceased broadcasting permanently and the Freeview digital TV services were radiated at an ERP of 25 W each.

The power levels on all four UHF channels were increased to 125 W. The UK's digital switchover commenced at Kilvey Hill (and therefore at Pontardawe and all its other relays) on 12 August 2009.

This was done as part of the Europe-wide tactic of clearing Band V above 800 MHz so as to make space for future 4G mobile phone services.