Freeware: Antenna Web 2
Freeware 1-3 of 3
Cantennator 1
Cantennator calculates dimentions for a can WiFi antenna. You enter the can diameter, and it will calculate where to drill the hole for the connector as well as the optimum can length. Boost your WiFi signal with this cheap and easy to make antenna.
Satellite Antenna Alignment 2.37.2
The program "Satellite Antenna Alignment" is used to calculate the angles necessary for installing satellite dishes. The main difference from similar software is the possibility to calculate the position for all satellites at once.
RadioWORKS 2.0
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.