1)   RadioWORKS 2.0.12.0
RadioWORKS: A tool for calculating radio wave properties. Get frequency info, such as free-space wavelength, antenna lengths, band info, propagation methods, etc. Calculate path loss using different models. Predict power / range requirement changes.
RadioWORKS, Radio Waves, Propagation, EMF, Electro-Magnetic Spectrum, RF, HAM, Amateur Radio, Science, path loss,

 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.
radio, amateur, grayline, propagation, prediction, day, night, terminator, shortwave, radio,

 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.
radio, amateur, grayline, propagation, prediction, day, night, terminator, shortwave, radio,