In an office trailer beside a truck weighing scale the use of the two way radio (CB I guess, but I'll double check next trip)that the dispatcher uses at one end of the 34 foot trailer knocks out the phone the guy on the other end is using every time it's used. The antenna is on the roof over the dispatcher's end, and these are cord sets I believe, although I better double check that, too. (I was hurrying off when they dropped this gem on me)'

All wired in unshielded Cat 5 under the trailer. It doesn't just bleed over the phone while mike is keyed, but actually cuts off the connection. Any thoughts?