Wireless link testing using iPerf

[kilos]

I have used Wavion Coverage Tool which uses iperf tool (command line tool) & GPS plotting for testing wireless thoroughputs then plotting the signal strengths & bandwidth on Google Earth

You can use the graphical interface called JPerf to view the data transfer rates of Iperf , no GPS plotting.

Interesting article on the Ubiquiti Forum

http://www.ubnt.com/forum/showthread.php?t=12740

Now to find that NASA tool called GPSiPerfView which allows you to plot your bandwidth & GPS Co-ords.
Here is a linux script that you use with your USB GPS I generates a xml to generate the GPS co-ords and bandwidth data for Google Earth as seen by this below KML from the WCT above

<?xml version="1.0"?>
<kml><Document><Placemark><name>TP:0.00 Mbps,4448457 mtrs</name><Point id="ID"><extrude>0</extrude><altitudeMode>clampToGround</altitudeMode>
<coordinates>22.4667933333333,-33.9594533333333,0.1100000000000</coordinates></Point></Placemark></Document></kml>