RIGEXPERT analyzers are powerful antenna analyzers designed for testing. Checking. Tuning or repairing antennas and antenna FEEDLINES. Graphical SWR (standing wave ratio) and impedance. AS well AS SMITH/POLAR chart displays are KEY features of these analyzers which significantly reduce the time required to adjust an antenna. Easy to USE measurement modes. AS well AS additional features such AS connection to a personal computer make RIGEXPERT analyzers attractive for professionals and hobbyists.