Yeah it does seem to be rfi but only after it starts to go dark, it must be the line is picking up the interfering stations, rather than rejecting them each spike is a radio station, which can be found using a lw/mw radio, shouldn't the line be preventing these frequencies from affecting the adsl? Also neighbours have crackly lines, mines more of increased background noise, and hissing. I've attached QLN graphs as they get worse. The tones that are unusable are normaly 7-9db, during the day