Land at Pen-Rhiwgul, adjacent to the A458, Mallwyd.
Installation of a 5m tower extension to the existing installation and relocation of 3 no. antennas and 2 no dishes to the top of the extension (approved under application NP5/74/474) along with the installation of 6 no new antennas, 5 no ground-based equipment cabinets, installation of remote radio units, mast head appliers, GPS nodes and associated ancillary works