An *omnidirectional* antenna sends signal in all directions, and that's 
not what you want.  A *directional* antenna focuses most of its power around 
a specific axis, and so delivers more power in that one direction while 
keeping the total within the limits allowed by the FCC,
  So I would try a "YAGI" directional antenna at your house, instead of the 
omnidirectional booster, and pointed towards theirs.

  (A directional antenna's axis is surrounded by a diffuse "fresnel" zone, 
and trees and other obstructions within this zone will reduce signal 
strength.  The less obstructed the view from antenna to client, the better.)

  You can get even better results with a pair of "wireless bridges", one at 
each house, each with a directional antenna pointed toward the other.  These 
are intended to provide a wireless link between two wired networks; the 
wired network on either side could include a wireless router or access point 
to serve nearby clients.  But I don't know of amyone who makes such devices 
for the home/small business market, so this approach could get expensive.

David Gillett


On 27 Mar 2006 at 11:02, Margie wrote:

> Hi,
>     I am trying to set up a wifi network for my son and his daughters.
>  The daughters live on the same property, about 1600 feet behind the
> dad, and we are trying to get the signal to go to their trailer. There
> are some obstructions like trees which may be in the way.  With my
> laptop I could pick up a great signal about a thousand feet away, half
> signal 1400 feet and then no signal when we get to their driveway.  We
> have purchased a 2.4 GHz range extender 5 dBi omni directional antenna
> with a 4 foot cable.  It is connected to a Linsys Wirelss G Broadband
> Wireless Router.  We still cannot receive a signal to their computers,
> which do have Linksys WMP54GS wireless-G PCI Adapters with
> speedbooster in each of the girls computers.  It still won't reach
> their computers.  I was wondering if there is some kind of a setup
> that we can put in their trailer that will draw the signal to their
> computers.  Oh and their desktops are sitting on the floor. 
> 
> They all have Win XP Pro.
> 
> Thanks very much
> Margaret

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