Does anyone have any info on the affects of thermal inversion on line of site? Or can someone direct me somewhere to read up on it?
Your signal would reflect (or refract depending on the angle of incidence) off of (through) the thermal boundery if your los crosses the boundery.
In a nut shell, the atmosphere due to it mositure content acts as a wave guide channeling your signal to places that you may or may not want it to go, depending on whether you are a ham radio operator, or a wireless isp.
Troposperic ducting is something else you may run into.
here is a quick explaination (DX in the article means distant (difficult) contact
http://home.cogeco.ca/~vem3ont22/propag … -modes.htm
I have experianced this on my amatuer radio equipment, at 145Mhz I was able to talk to someone in St Louis MO from Ohio
one of the best shots I’m aware of is http://hiloweb.com/kh6hme/index.html
nice blurb the bbc worked up on inversion /ducting
http://www.bbc.co.uk/reception/factshee … eather.pdf
I have had problems on wireless links other than canopy, with fog, and once with a hot air ballon launch.
I suspect that the longer the propagation path the more likely you are to experiance this, such as a 20 mile back haul shot is more likely than a 1.5 mile AP shot, ie more unstable air to traverse.
let me know if you want a better explaination
-Chris