The Spectrum Analyzer/Signal Analyzer MS2840A has an upper measurement frequency limit of 44.5 GHz and its carrier close-in SSB phase noise performance is overwhelmingly best-of-class for middle range models. The MS2840A supports measurements across a wide frequency band ranging from applications such as microwave wireless backhaul, requiring high phase-noise performance to measure transmitter carrier close-in spurious, to VHF/UHF private mobile radio (PMR).