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I agree. They were talking about mapping
coverage areas in another post. . Could be a intresting thing!
Dennis
----- Original Message -----
Sent: Monday, July 28, 2003 5:26 PM
Subject: Re: [smartBridges] Coverage
areas
Hi Dennis & Bill,
Very interesting topic for all of
us!
My locations (NYC & surroundings) are mostly concrete
jungles. 6-7 story high pre-war buildings constructed of brick, steel,
& concrete and packed T-I-G-H-T. On our first large scale deploy
(did mostly indoor stuff until now), we're using sB aPPO with Maxrad
MSO24014PTNF sectorized omni 14dBi total. This omni has 3 sectors, so
divide the total dBi by 3 for actual. We've got a 2nd aPPO ready to be
hooked up to the Maxrad if needed in the future. We've also got another
aPPO connected to a MobileMark 12dBi omni whip antenna. Really, we just
put this up first to see if it would work since it was nice and cheap.
It has good range, but only a 7 degree downtilt so it's not good for the
buildings we've installed on top of.
Was able to get out .8mile from
basestation and get a 25% signal using airNIC on the 9th floor of a
building. (This really impressed me!!)
Alex from sB tech support
has recommended the following settings on the aPPOs and CPEs:
Fragmentation
Threshold = 1500
RTS/CTS = 500 (from an article Alex recommended on www.80211planet.com )
I've put a
few customers online so that I can test from their point-of-view and I'm
awaiting more feedback.
I think that you guys are onto something with
field test results. Maybe we can start putting together a database for
sB to put on their website? How 'bout it sB?
Kind
regards,
Sevak
Sevak Avakians
diDi Wireless
Communities, Inc.
646-526-9664
1-866-diDi-NET
www.didiwireless.com
On Mon,
2003-07-28 at 13:02, Dennis Burgess wrote:
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 -----
From: Joe
Email
To: [EMAIL PROTECTED]
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
-----Original
Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of
Dennis Burgess
Sent: Sunday, July 27, 2003 2:18
PM
To: [EMAIL PROTECTED]
Subject: Re:
[smartBridges] Coverage areas
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 -----
From: Bill
Flood
To: [EMAIL PROTECTED]
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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