Phone interference
For the last few weeks we have had crackling on our BT phone line. I went through the process of disconnecting everything in turn and eventually discovered that it is my computer causing the problem (imac). The router is fine so I can still use my ipad. However the crackling stops when I switch my computer off. I have filters on all of my phone sockets.
Can anyone advise me as to how I might cure this (apart from buying a new computer)?