Other programs I have found useful...
    (Click on title to download)
    RCALC313:   A windows program allowing calculation of TX / RX & Antenna relationships for wireless, Part 15, and similar links.

    VHFPROP:   A program to estimate field strength for 6m through 23cm frequencies.  Look through list of programs for vhfprop.zip.

    RFPROP:   Another windows based program for wireless links or general VHF / UHF propagation providing a bit more detail than other programs.  Allows entering diffraction information, as appropriate, and includes noise figure, noise temperature (external, e.g., sky, earth, etc.) 

    (This page is continuously under construction.) 
    Email me at:   jimeagle@surfbest.net