The AT-500, Antenna Tester provides a cost-effective, fast, graphical way of determining the quality of mobile and base station antennas. It is a rugged, easy-to-use, hand-held design with extended battery life makes it ideal for use in the field. The AT-500 can be used to test the VSWR, Return Loss, Match Efficiency and Reflection Coefficient (Rho) of an antenna. Single frequency readings and frequency sweeps allow for everything from pin-point tests to system optimization and tuning. Up to 12 traces can be saved in the device and It has an RS232 interface for communication.