Download PDF files of the following white papers:

Engineering the All Weather Antenna Tuning Unit

Engineering the All Weather Antenna Tuning Unit (ATU)

Low Frequency (LF) Solutions for Alternative Positioning, Navigation, Timing, and Data (APNT&D) and Associated Receiver Technology, Nautel Inc./UrsaNav Inc., 2011

Nautel/UrsaNav LF Solutions Research Paper: NAV10

NDB Antennas

NDB Antennas

Lightning Protection for Radio Transmitter Stations

Lightning Protection for Radio Transmitter Stations