Using simulation to predict, analyze, optimize, and plan the coverage given by radio and radar systems is key to reduce development and planning times together with costs. Also, in some cases, this is the only feasible approach to identify and fix communication issues. This webinar overviews simulation strategies for propagation analysis in complex environments, including among others large-scale terrain, cities, or buildings with interior detail. Additionally, the effects of interference and jamming will be covered and how the frequency allocation for a system with many transmitters can be optimized automatically.