RE: [WISPA] Atheros speed WRAP vs RB532

[Rick Harnish]

I have installed 3 Spectra Links so far.  NLOS performance will be best in municipal environments with plenty of buildings to bounce off of.  I did try to make a 6 mile NLOS link with trees in the path before I recommended the construction of a tower.  I wanted to see the potential.  If the path obstructions are in the middle of the path there is a much higher probability of success, however, if the obstructions are near the ends of the link the chances of success are much less.  This particular path is in a rural area without reflective surfaces.  NLOS links will drop bandwidth potential rapidly.  All calculations I have done so far point to a 20 mile limit for 200+ Mbps throughput.  The newest firmware released a few weeks ago improved bandwidth on one of these links 50 Mbps.  I was very impressed with that, good job Orthogon.  That link is running 6 miles with LOS and 2’ Dual Pol dishes.  It is running about 175 Mbps currently.  We will be switching to 3’ dishes in a few weeks to peak out the performance capabilities of the link.   Rick Harnish President OnlyInternet Broadband & Wireless, Inc. 260-827-2482 Office 260-307-4000 Cell 260-918-4340 VoIP www.oibw.net [EMAIL PROTECTED]       From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Hendry Sent: Sunday, November 13, 2005 4:46 PM To: 'WISPA General List' Subject: RE: [WISPA] Atheros speed WRAP vs RB532   What about NLOS (trees and buildings) @ 3km with a max EIRP of 33db (as that’s what we are stuck with in the UK L) or 28km with good LOS/Fresnel clearance with max EIRP of 33db?   From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dylan Oliver Sent: 13 November 2005 21:04 To: WISPA General List Subject: Re: [WISPA] Atheros speed WRAP vs RB532   Paul, I haven't tried the Spectra yet but am planning some links with the Link Estimator. Are you familiar with this tool? You may have to attend a training session to get access to the partner site and profile generator. However I'd be happy to generate a path report for you .. the tool is quite good, and at least the sales people will tell you it's very accurate - if it says 99.999% reliability, that's what you'll get. Trees and other obstructions can be added to the profile manually. The single biggest factor is antenna gain .. you just won't get 200 Mbps over 40 km without 4' dishes on both sides. Best, -- Dylan Oliver Primaverity, LLC -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.362 / Virus Database: 267.13.0/167 - Release Date: 11/11/2005 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.362 / Virus Database: 267.13.0/167 - Release Date: 11/11/2005

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