The latest AutoEZ update includes the ability to create EZNEC models having 2 separate ground media. One typical use is to model a vertical located on a sandy beach next to salt water.
Using AutoEZ you can assign a variable to the media 2 linear boundary and then run a series of test cases with different values for the boundary coordinate. Here is an animation of how the pattern for a 20m quarter-wave vertical changes as the distance to the water is varied from 0 to 100 feet. http://ac6la.com/aepatani5.gif For more information see "Using 2 Ground Media" here: http://ac6la.com/aepatterns.html Current AutoEZ users, there is no charge for AutoEZ updates. See here for a list of recent changes: http://ac6la.com/aechanges.html Dan, AC6LA http://ac6la.com _________________ Topband Reflector Archives - http://www.contesting.com/_topband
