Hello

I have made a simple 5ghz link over 15kms, very clean LOS

One end is on a tower, the other is on a steel shed on a hill on a 3 meter pole.

I got bad signal -88 at 3 meters on the pole, after messing aroung for ever we found at 1 meter on the pole got -75

How can lowering a grid 2 meters on a pole make it so much better?

Thanks

Reflections from the steel shed probably , when you lowered it you found a "dead zone"

Thanks

I posted on another forum and they said the same, they also said it could be bouncing of the ground.

This is something I never knew existed!

Thanks

Hello

How can lowering a grid 2 meters on a pole make it so much better?

Thanks

You should also familiarise yourself with something called the Fresnel Zone... combine tis with reflections, and you are destined for interesting times!
http://en.wikipedia.org/wiki/Fresnel_zone

My head started to hurt before I even clicked the link

I'm not as bright as some

I'll do some reading

Thanks