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Yes, no amps, max power on a APPO to a Maxrad WISP
90 sector though thick forest. That goes to a ABI inside the house with a
stock antenna.
Dennis
----- Original Message -----
Sent: Sunday, July 27, 2003 5:30 PM
Subject: RE: [smartBridges] Coverage
areas
Dennis
About Trees
Are
you saying you are getting penetration with just an antenna and no
amps
I
know a lot of guys are using amps
I
would really like to see sB go to a 100MW (20dB) radio, that would help
some
We
have a tremendous tree problem here in east Texas
thanks
Joe
K
Bill,
Thanks for the info.
Just a FYI, wiith a 14db Sector from Maxrad I
shot though dense trees (not above but though) for 1/4 of a mile and still
could penitrate the basement concrete walls.
The trees are mostly oaks around 50-60 foot
plus heavy coverage. You can see about 30 feet into the woods from
this location before all the leaves and such block your view.
Dennis
----- Original Message -----
Sent: Sunday, July 27, 2003 8:57
AM
Subject: Re: [smartBridges] Coverage
areas
Dennis,
RF is a funny thing.... Trees - What
kind? See 2.4 Ghz travels though things and some things it
doesn't. I have had some success shooting through red and white
pines. The density is key. How many trees? How do you
measure or describe? There is a figure out there that says that you
lose .35 db for every meter of foliage you pass through. I think
this is just a ball park statement. If this statement was coupled
with the particular tree type found around the globe it would be a much
more useful tool. Possibly as a group (organized) we could test
certain applications and then develop our own figure for sending signal
through foliage, but if you think about that the outcome would be as vague
as the .35 db statement above or have so many variable attached it may
render it useless.
Take this scenario. You learn how
to shoot darts at a dart board. Soon you find yourself hitting a
bulls eye each time. Someone asks you how you do it. You reply,"I
don't know, I just practised a lot. I throw and it gets
there".
You need to make tests in those areas and simply figure
this one out on your own. When on the roof you need to move around
until you find the sweet spot. Then remember if you are in an area
where the leaves fall off the trees, be careful to take your positioning
into account. If you are setting up without leaves, look at the
branch formations. Look for the holes or you'll be back next spring
to move that antenna.
Consider yourself lucky to have 500 homes in
a 2 mile area. Most of my repeater locations generally have 200 +
cows in that same area!
The answer is time and
experience!
At 12:00 AM 7/27/2003 -0500, you wrote:
Question..
One
locaiton that I am intrested in providing service, is mostly
trees. In otherwords, everywhere around has trees other than
backyards or roads. Now, my antenna would be above these trees and
I do get a good Visual coverage from Radio Mobile with a decent
tower. How does that translate to customers?
I have about 500 homes
within 2 miles of this tower, everything from moble homes to some nice
subdivisons. But again, unless they were in the way of
buliding the homes, most have tree cover. I have heard mixed
responce about the penterating power of this signal.
Dennis
Bill Flood
AirRunner Networks LLC --- We make the web
fast!
If you get tired of the wait call
715-443-3700!
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