The main idea here is that even if the omni and sector are the same strength the omni is going to have a higher noise floor because it's listening to everything all around it, thus it will not perform as well at further distances.
What you are saying is true on "calculated" antenna patterns, but the "measured" strength out in the field would be very different. I've seen WISPs time after time fight with a system for months trying to get an omni to work, and as soon as they stopped fighting it and put up two sector antennas (of the same or slightly greater db) all their problems disappeared. On the flip side, in an area where coverage is king, and you need to hit a relatively small area, an omni will work great. Kevin Summers KISTech Internet Services Inc. www.kistech.com > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Eje Gustafsson > Sent: Saturday, July 19, 2003 10:58 AM > To: Kevin Summers > Subject: Re: [smartBridges] Sector antenna range vs omni > > > That is not entirely true. 8dB omni will give same range as a 8dB > sector if your right in front of the sector. > You would however have to use a 11dB sector to get 8dB at the outer > perimiters of that sector. So say a 90* sector when your at the 90* > mark your client will only see 8dB. > However with a sector you can easier get away from interference. if > your not serving customers in a 360* from your AP then doing a sector > probably is better that make sure you don't pick up to much > interference from the direction your not service any customers. > > Also the sector can be downtilted so if you have interference coming > from the horizont you can downtilt your sector and shoot under or > maybe over. Which you can not do with a omni. > > / Eje > > Friday, July 18, 2003, 9:08:26 PM, you wrote: > > > KS> No, because when your OMNI sends out a signal it's going in > KS> all directions. A sector takes that signal and focuses it's > KS> strength in the direction you've got it pointing. A sector > KS> antenna will also "hear" better because it's focused on one > KS> area rather than everything coming in from every direction. > KS> The noise floor for a setup with an OMNI is much higher than > KS> that of a sector setup. > > KS> Kevin Summers > KS> KISTech Internet Services Inc. > KS> www.kistech.com > KS> -----Original Message----- > KS> From: [EMAIL PROTECTED] > KS> [mailto:[EMAIL PROTECTED] Behalf Of Dennis Burgess > KS> Sent: Friday, July 18, 2003 5:33 PM > KS> To: [EMAIL PROTECTED] > KS> Subject: Re: [smartBridges] Sector antenna range vs omni > > > KS> Still the question is, does a Omni give you the same range as > a sector? > > KS> Dennis > > KS> ----- Original Message ----- > KS> From: John > KS> To: [EMAIL PROTECTED] > KS> Sent: Friday, July 18, 2003 5:04 PM > KS> Subject: RE: [smartBridges] Sector antenna range vs omni > > > KS> sectors do a few things for me. One they allow me to split > out my customer > KS> and not over load an AP. secondly they allow me to track > people that are war > KS> roaming. Third they allow me to change my tilt to the > typography of the > KS> area. and last they mount nicely to the railing of water > tanks and sides of > KS> buildings giving me inexpensive towers. > > KS> John Mooring > KS> -----Original Message----- > KS> From: [EMAIL PROTECTED] > KS> [mailto:[EMAIL PROTECTED] Behalf Of Jason Keller > KS> Sent: Friday, July 18, 2003 2:24 AM > KS> To: [EMAIL PROTECTED] > KS> Subject: RE: [smartBridges] Sector antenna range vs omni > > > KS> The sectorized maxrad omni is a joke. Save yourself about > 500$ and buy three > KS> of there wisp series sectors and be done with it. You pay an > extra $500 for > KS> a fancy mounting apparatus to put them all together. Trust me > there is no > KS> difference in the performance, or appearance of the antenna�s. Jason > > KS> -----Original Message----- > KS> From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > KS> On Behalf Of John Hokenson > KS> Sent: Friday, July 18, 2003 1:02 AM > KS> To: [EMAIL PROTECTED] > KS> Subject: Re: [smartBridges] Sector antenna range vs omni > > KS> The nice thing about the Maxrad sectorized omni is you can adjust the > KS> patterns to exactly match your coverage area. Most everyone > that I know > KS> that's used them say they out perform the equivalent gain omni by some > KS> degree. > > KS> JH > KS> ----- Original Message ----- > KS> From: phantam > KS> To: '[EMAIL PROTECTED]' > KS> Sent: Thursday, July 17, 2003 10:10 PM > KS> Subject: RE: [smartBridges] Sector antenna range vs omni > > KS> Supposedly work decently but in my view there overpriced DRASTICALLY > > > > > KS> From: Dennis Burgess [mailto:[EMAIL PROTECTED] > KS> Sent: Friday, July 18, 2003 12:38 AM > KS> To: [EMAIL PROTECTED] > > KS> Assuming a 13 db omni and a 13 dbi sector, and the same > power, what is going > KS> to be the better of the two as far as distance. If there is > a diffference, > KS> how much? > > KS> Also, I have looked at another omni that is sectorized. I'm > assuming its > KS> one physical unit, with three seperate antennas, and then you add a > KS> splitter, reducing your power. Do these work decently? > > KS> Dennis > > > KS> The PART-15.ORG smartBridges Discussion List > KS> To Join: mailto:[EMAIL PROTECTED] (in the body type > subscribe smartBridges <yournickname> > KS> To Remove: mailto:[EMAIL PROTECTED] (in the body type > unsubscribe smartBridges) > KS> Archives: http://archives.part-15.org > > > > Best regards, > Eje Gustafsson mailto:[EMAIL PROTECTED] > --- > The Family Entertainment Network http://www.fament.com > Phone : 620-231-7777 Fax : 620-231-4066 > eBay UserID : macahan > - Your Full Time Professionals - > > -- > [This E-mail scanned for viruses by Declude Virus] > > The PART-15.ORG smartBridges Discussion List > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > smartBridges <yournickname> > To Remove: mailto:[EMAIL PROTECTED] (in the body type > unsubscribe smartBridges) > Archives: http://archives.part-15.org The PART-15.ORG smartBridges Discussion List To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) Archives: http://archives.part-15.org
