Satellite television antennas shall be located and designed to reduce visual impact from surrounding properties and from public streets. Screening or buffering shall be required such that any dish antenna shall be substantially screened from view at ground level from any street. The dwelling on the lot, storage buildings, other accessory buildings, landscaping and plantings or a combination of these may be used to screen the antenna. All screening shall have a minimum height of three feet. If landscaping or plantings are utilized, evergreen plantings shall be used. All screening or buffering shall be installed when the dish antenna is installed and shall be maintained So long as the dish antenna is in place.