CentralNotice From Wikipedia, the free encyclopedia Jump to navigation Jump to search This article has multiple issues. Please help improve it or discuss these issues on the talk page . ( Learn how and when to remove these template messages ) This article may need to be rewritten entirely to comply with Wikipedia's quality standards . You can help . The discussion page may contain suggestions. ( July 2015 ) This article's tone or style may not reflect the encyclopedic tone used on Wikipedia . See Wikipedia's guide to writing better articles for suggestions. ( January 2017 ) ( Learn how and when to remove this template message ) This article needs attention from an expert in radio transmission . The specific problem is: The article does not really explain what a Fresnel zone is for or why it has the shape it does. In addition, the Talk page lists several errors, m...