RadioWORKS

From DesertHail:

RadioWORKS is a tool for calculating various items related to radio waves and radio wave propagation. Get detailed information about a frequency, such as the free-space wavelength, proper antenna lengths for common wavelength ratios, band classification, propagation methods, common transmitter configurations, etc. Calculate path loss using the Free-Space, Flat-Earth, Hata Urban, Hata Suburban, Hata Open Area, or Empirical COST-Walfisch-Ikegami (Also known as 'COST 231') mathematical models. Use the Distance and Power change prediction calculator to predict how a proposed transmitter power change, whether an increase or a decrease, will affect your usable range -- OR -- how a proposed range requirement change, whether an increase or a decrease, will affect your transmitter power requirements, while factoring in the signal decay rate observed in your current system. Distance / Power change predictions can also be displayed graphically. Additionally, all mathematical formulas used by the application are on display, including explanations and usage information.