The N9330B from Keysight is a handheld, cable and antenna tester for field installation and maintenance. It measures return loss, SWR, cable loss and has in-built distance-to-fault test functions (DTF) with a sweep time of 3.0 ms/data point. The handheld device has a 6.5 inch TFT color LCD and a USB Interface for storing data on a flash drive or connecting the device to a computer. It operates from 25 MHz to 4 GHz and can be used when testing wireless services, aerospace/defense applications, broadcasting and radio links applications.