by RADIO-TIMETRAVELLER © 2019 http://radio-timetraveller.blogspot.com Jump to: Day | Night | Critical Hours US Mediumwave Pattern References are produced by the Radio Data MW program. NOTE: These maps are not my work. They are the work of Radio-Timetraveller curated by Bill Scott. Bill’s blog is full of great information on broadcast listening and DXing, with … Continue reading US Medium Wave Pattern References