For those who have struggled with RFI at the home station here is my solution to the interference.
Over the past few years I have had an annoying set of evenly spaced tones that interfered with my 2M, 6M and UHF reception at home. The noise could be heard for about 100 ft from the house and then dropped off quickly. RF suppressors on the cables did not reduce the noise source.
My final solution proved to be replacing my 4 port Ethernet switch which was located near my radios. The low cost plastic case switch (LinkSys 10/100 5 port SW) was replaced with a another low cost switch with a metal case (Netgear FS10). I still have some interference on 6M but I also have another Ethernet switch downstairs that may be an additional source for 6M interference.