wireless

[Duane Attaway]

On Tue, 29 Oct 2002, Jonathan Hutchins wrote:

> I didn't feel like searching for the specific article, but how much
> elevation do you have to have to get a 26 mile line-of-site?

He was using an amplifier (I assume 1 watt) and 24dbi dish antennas across 
a valley on one of the Hawiian islands.  I believe the better receivers of 
todays cards may make the amplifier not necessary.  Also, there are the 
larger 30dbi dish antennas found on tv antenna masts that may work.  The 
only drawback is that higher gain antennas require much more patience when 
aiming if you want to receive a signal.  A GPS is a must for anything over 
a few miles.

The elevation I got with 1-1/2 miles from a 12dbi and the 24dbi antenna
were about three feet from the ground.  The 12dbi antenna was in a truck 
and the 24dbi was laying on the ground.