The large 3 ft 18 dbi round one sure looks cool, when you have space
to mount a 3 ft parabolic dish. Not many homeowners would allow that
one on the roof. However, I'm scared to use the 15 dbi ones, Its the
same grid as 2.4Ghz. I have a hard time believing a grid designed
for 2.4Ghz works well for 900Mhz as well. I have no testing
experience with it to know one way or the other.
We've used the Pac Omnis, solid parabolics, and panels, andthey've
all worked well as spec'd. Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
----- Original Message -----
*From:* [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
*To:* 'WISPA General List' <mailto:wireless@wispa.org>
*Sent:* Monday, February 13, 2006 8:11 PM
*Subject:* RE: [WISPA] 900 client and omni antennas
What about the pacwireless grid’s?
------------------------------------------------------------------------
*From:* [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
[mailto:[EMAIL PROTECTED] *On Behalf Of *Tom DeReggi
*Sent:* Monday, February 13, 2006 2:11 PM
*To:* WISPA General List
*Subject:* Re: [WISPA] 900 client and omni antennas
The best client antenna in 900 depends on the typical weather /
environment, not just specifically best antenna.
To combat heavy foliage in very Rural areas (dry summer
months), M2inc's - 17 dbi Yagis have been invaluable to gain
maximum RSSI, to penetrate the trees. However, they become
useless in Winter weather, when they get ice buildup on them.
In a ice/snow heavy environment, panel antennas are MUCH
better,
for example the built-in 10dbi antenna of Trango 900 radios, to
get max allowed RSSI in a weather resistent panel enclosure. The
F/B is poor (only 12 db), but often the best choice for ease,
cost, and Dual pol flexibilty.
In high noise areas, such as Urban or colocated near paging
gear,
a high quality antenna like MTI's 10 dbi panel, offers maximum F/B
ratio, to block out interference. Not much can out perform them,
but at a trade off of cost and flexibility of pol change on the
fly.
When Yagi's can be mounted low for easy access, (within Gorilla
Ladder height (18 feet), and for residential where I can afford to
take the risk of not having pol change on the fly (usually
consistent noise floor on a polarity), I don't hesitate to install
a Yagi as my first choice. Often Verticle is less desirable
interference any way, based on paging companies. However, for
critical links, installing the M2inc yagis are risky. They
mounting method is horrible. It allows a lot of play for the Yagi
to move in heavy winds. If mounted high on a steep roof, I avoid
the Yagi unless they are absolutely necessary, because they need
mcuh more frequent attention. For example to wipe the snow off of
them, or re-align.
There are someother Yagis that have more secure double point
mounts, around 12-15 dbi, if you can afford to give up the 2 db.
As for verticle Omni type client antennas, for example for
mobile
apps, I have no advice.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
----- Original Message -----
*From:* Rick Harnish <mailto:[EMAIL PROTECTED]>
*To:* 'WISPA General List' <mailto:wireless@wispa.org>
*Sent:* Monday, February 13, 2006 1:11 PM
*Subject:* [WISPA] 900 client and omni antennas
What are the 900 client antennas of choice as well
as omni
directionals. I would like a solution that can get 5-6 miles
NLOS. We don’t have a lot of dense foliage that we have tried
to penetrate up until now but are looking for a solution for
select cells.
Respectfully,
**/Rick Harnish/**
/President/
/OnlyInternet Broadband & Wireless, Inc./
/260-827-2482 Office/
/260-307-4000 Cell/
/260-918-4340 VoIP/
/www.oibw.net <http://www.oibw.net/>/
**/[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>/**
**/ /***/ <http://www.oibw.net/>/*
<http://www.wispa.org/>
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