['97ventureowner]

Seeing this specific forum is also named Electronics and Technology I figured I'd try my question here.
I live directly across from a food distribution warehouse for a supermarket chain. For the past few years I have been having trouble with reception on the tv that is located in my living room( which is the closest room to the warehouse.) We have 4 local channels (ABC CBS NBC PBS) and we also have Directv. There is also a tv in the kitchen at the oppostie end of the house. It first started with the CBS station, then the NBC station also began with the poor reception. Now the ABC station is starting to do it.The CBS and NBC are the weaker signals in town and the ABC is the strongest. I also have an auxillary antennae in my attic to help with the local stations. The problem starts when we are watching a show and the picture becomes real static-ky with a lot of snow and static sounds on the audio. Sometimes it's worse than other incidences. I also get white lines and a "fishbone" type pattern amongst the snow and static.
I was told that the 2 way radios used by the warehouse truck drivers are the main cause of this interference. In fact, sometimes when we are watching tv and the static problem starts, you can hear a tractor trailer pull out of the premises. The staic and noise increase as the truck is in front of the house and subsides as it gets further down the road. The tv in the kitchen does not experience any of these problems at all. I purchased a filter from Radio Shack that was supposed to eliminate this problem, but since I installed it last year, it has not. I tried to explain the problem to the guy at Radio Shack, and this is what he reccomended. He says there was not much more I could do to lessen the problem.
Does anyone know of another product or technique I could use to get rid of the problem? It is really becoming annoying and my wife is on edge because the problem seems to crop up whenever she is watching something good or the show that is on has a good part playing.I'm open to suggestions on how to alleviate this problem and return harmony to my home. Thank you in advance.