The N9935A from Keysight Technologies is a Fieldfox handheld microwave spectrum analyzer that covers frequency from 5 kHz to 9 GHz. This handheld analyzer base function is spectrum analysis and has a built-in power meter with USB power sensor support. It can be used to test satellite communications, microwave backhaul, military communications, radar systems and other wide range of additional applications. It comes with a standard 3-year warranty and can be controlled remotely with an iPad or iPhone.