Hi Ron;
This probably won't make you feel much better but at my prior qth I grounded 
and regrounded with no luck.  To their credit the phone company was willing 
to come out and they were able to fix my phone interference problems.  Cable 
tv, however, was hopeless.  We rented an apartment to my mother in law who 
was a serious Yankee fan.  100 watts would do a number on both picture and 
audio.  Tried torids and other possible filters.  For reasons unknown I have 
no problem at this qth.  I guess if I ever go house shopping I will have to 
take a rig and antenna with me.
As for the tower, buying the tower might be the easy part.  They are great 
once put up and everything is working but it is a big, very big project.

Rich