Basic Radio Propagation Predictions for September 1952, Three Months in Advance. Open PDF Document Details Document Type Technical Report Publication Date Jun 01, 1952 Accession Number ADA315083 Entities Organizations United States Department of Commerce Tags Communities of Interest Air Platforms Ground and Sea Platforms Human Systems Weapons Technologies DTIC Thesaurus Topics Air Force Electromagnetic Wave Propagation Frequency Frequency Bands Ionosphere Ionospheric Propagation Latitude Naval Operations Navy Radio Frequency Radio Transmission Radio Waves Sky Waves Solar Activity Solar Cycle Standards Wave Propagation