About us: VIAVI Engineers work with teammates to solve problems and build innovative software and hardware solutions that help our customers design, deploy and optimize all types of networks which enable their customers cell phone data and voice services for 5G, 4G and all types of wireless networks, enable cable systems and services, enable high speed data centers to operate, enable aircraft to fly safely, and enable your local government, police, fire departments, and military to operate radio communication. The 1 MHz - 18 GHz path: LO and synthesizer planning, spurious and harmonic analysis, gain / noise figure / IP3 cascades, filtering and isolation, transmit linearity, receiver sensitivity and dynamic range, calibration, and the thermal realities of an all-weather ruggedized box.