I am trying to rotate my directional TV antenna to the proper direction for the best reception. My problem is, I'm getting good reception on all channels with me touching the antenna or even standing near it.. But whenI walk away, as little as three feet, TV reception diminishes some what. Breaks up on certain channels. Does anyone know why this is and what I can do to compensate for me not having to stand near the antenna? The antenna is amplified. Any help or suggestions are appreciated.