1)   RadioWORKS 2.0.36.0
RadioWORKS: A tool for calculating radio wave properties. Get frequency info like free-space wavelength. Calculate antenna length. 3D coverage map. 2D line of sight graph. Calculate path loss / various models. Predict power/range requirement changes.

 2)   DX ToolBox 2.6.0
DX Toolbox gathers information on solar and geomagnetic conditions that affect radio propagation. It also features several propagation forecasting tools, and is ideal for the ham radio operator, shortwave listener, or other radio enthusiast.

 3)   DX ToolBox 2.6.0
DX Toolbox gathers information on solar and geomagnetic conditions that affect radio propagation. It also features several propagation forecasting tools, and is ideal for the ham radio operator, shortwave listener, or other radio enthusiast.