Hi Paul - 5live 693 Droitwich is now on a 50kw Harris DX50, replacing the 3X 50kw, much older TXs that were splattering badly.
Alan Beech did the work, also a similar 5live job at Moorside edge.
As STX points out, many chopper PSUs in the home, create lots of hash, that can drown out the LW signal.