ABSTRACTS OF U.S. PATENTS ON RADIO DIRECTION FINDING Open PDF Document Details Document Type Technical Report Publication Date Jun 01, 1948 Accession Number AD0041461 Entities Organizations University of Illinois Urbana–Champaign Tags Communities of Interest Air Platforms Energy and Power Technologies DTIC Thesaurus Topics Cathode Ray Tubes Detectors Direction Finders Direction Finding Directional Antennas Electrical Engineering Electron Tubes Modulators Navy Oscillators Radio Communications Radio Direction Finders Radio Equipment Radio Frequency Radio Receivers Radio Transmission Radio Waves