I am thinking about placing a AV 640 near the house attached to a 12 foot pipe above ground set in concrete. Due to a few trees near by, this would be an good location in the lot that the house sits on. The location is away from the trees, but a couple of the whips which bend at the base will be about 2 feet at the end from the house metal rain gutter. Will this cause a lot of headaches in tuning the Antenna? Or might the 50 foot metal rain gutter might help it (wishful thinking).