I purchased this product in December 2009, I am not a specialist satellite antennas and even less, only with this accessory is mounted once on the scale (or roof) with the kit antenna is rotated and nuts are served on the mat, then one can confidently go set the channels of the TV. You will understand, no need to be two to adjust the antenna and the TV antenna so no calibration problem with this positioning of the housing kit beeps (fairly strident) when it is pointed at the satellite. Highly reliable I have not had to make other settings. A good manufacturing unit, delivered in its case with everything needed even equipped extension socket crimped F
