Fresspace calculates the range of a freespace radio link.

'Freespace' means, there are no obstacles in the path of the radio-wave. 
This condition applys best for radio-links from and to satellites.

When you try to calculate a very long ground radio-path you have to
consider the curvature of the earth. In this case, the program
can not be used.

The program works well for satellite paths, between antennas that
can 'see' each other and between mountain tops.
To consider the extra attenuation with radio-paths over plain ground 
you should subtract at least 6dB (1/4 of power in Watts) from the
power level of your transmitter in order to get a true result.
If there are any abstacles in the path, things become 
very complicated and the results of the program are very unaccurate.

When you select a parabolic dish antenna the efficiency of the
antenna is assumed to be 55 %.

This program runs under any 32bit-MS-Windows (95/98/NT). There is no
installation. To get rid of it, just delete the program file.

This program is freeware. Feel free to copy it.

Any questions, suggestions or critics are welcome and will be considered.

Andreas Tschammer, DL2KCL (german amateur radio callsign)

web: www.datelsoft.de/dl2kcl  (check in here for the latest version)

email: dl2kcl@datelsoft.de