You are right in that I am attempting to pass the signal from the building
to the 24db antenna down the powerline NLOS. Distance wise I have passed
the signal even further than I need NLOS but it was a strait shot NLOS not
off to the right like I am going to attempt. I will be able to actually try
this tomorrow and may post my results.


"Bob Bob" wrote in message
...
Hi Bryan

Am a little confused. Probably from working nights and not getting enough
sleep!

From your diagram you are trying to get a signal between the site that has
the 24dB gridpack and the "Outside building". You have done some tests
from the road and it seems to work.

I'd expect you biggest prohblem is the pine forest. They are excellent for
attenuating microwave signals! My gut feel is that you'll need a gain
antenna at the "outside building" as well as the existing one. This very
much depends on the pine tree density that I dont have any actual
attenuation figures on. I actually modelled a 2.4GHz link to my mother in
laws place about half a mile away through trees and with gridpacks at each
end. I had about 50dB of margin but was still worried about 100-200 yards
of pine trees. If nothing else you'll get multipath interference and may
need to play with polarization.

If all else fails try bouncing the signal off the house. You might be
surprised!

Sorry I cant be more helpful. Pine needles and tree trunks I dont have any
figures on!

Cheers Bob

Bryan Martin wrote:
Well the downside is that I dont think I can pull off the reflector
senerio or complete line of site going over the tree's. At the end of
this powerline is someone else's lot so I can't place anything on or
around that. I only have permission to put the unit in the building
located behind someone's house. Ideally I would rather not have any
external antenna's on the building if at all possible to make the
intrusion on property as light as possible. Thats what brought me to my
question. The building is just an old cheap yard shed more than
anything. It has power and 2 windows on the back side facing the back of
the lot. I hope to be able to place the wireless unit close to the
window which should help push the signal. If the building was another
25-30 foot more to the right I might would have LOS to it but that is
also when you cross over onto someone elses land which is not an option.
As for seeing the signal I am almost completely positive the grid antenna
would be able to intersect the wireless signal at the end of the
powerline but I am unsure if that is enough to get the signal back?