[John Candle]

The digital channels at your location are Strong not weak. You are saying that the interference lines are with both analog and digital , this is telling me to look for interference generators at your location. ANY electrical or electronic device can be interference generators. Lights of all types and kinds , motors , computers , Tv's , radios , washing machine , dryer , electric tooth brush charger , electric fence charger , door bell transformer , are you getting the idea--> ANY electrical or electronic device. The best way to find it or them is unpluging and unpluging and unpluging every thing inside the house and out side the house.