I had interference issues on a job in which I had used the supplied cable that comes with the mrf350. I never use it as I always run the antenna into the basement or crawl with a cat5 cable. This particular job the equipment was in the basement and I tried using the supplied cable. The interference was BAD. I changed over to a cat5 and the interference disappeared. For a couple months at least. I had to go back and relocate the antenna to another part of the basement and fixed the issue.