Same with CM9, etc. vs. R52, etc.
----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -------------------------------------------------- From: <e...@wisp-router.com> Sent: Saturday, May 02, 2009 11:00 AM To: "WISPA General List" <wireless@wispa.org> Subject: Re: [WISPA] Sector separation/isolation > Keep in mind that this is not necessary true depending what chip set the > card is using. For example the SR2 cards will always listen to 20Mhz even > if they only transmit on 10MHz or even 5MHz. While for example a XR2 set > in 10MHz mode will only listen to 10MHz. > > /Eje > CTO > WISP-Router, Inc. > Sent via BlackBerry from T-Mobile > > -----Original Message----- > From: Scott Reed <scottr...@onlyinternet.net> > > Date: Sat, 02 May 2009 11:40:31 > To: WISPA General List<wireless@wispa.org> > Subject: Re: [WISPA] Sector separation/isolation > > > Right now channel 1 uses channel 1, 2 and 3. Channel 6 uses 4-8. When > you go to 10MHz channels 1 will use 1 and 2. 6 will use 5, 6 and 7. > Therefore, you are no longer on adjacent channels, there is a gap of > channels 3 and 4 between. > Also, you will cut down on the amount of other noise you hear because > you listen to only half as much spectrum. > And, you will have more effective power so noise may be less of a problem. > > I am sure there are some RF savvy folks out there that can explain it > better. > > Michael Baird wrote: >> I can try that, can you tell me why that would make a difference though >> with the AP's seeing each other at such signal levels? Will changing to >> 10mhz channel width's cause the AP's to see each other at a lower RSSI? >> >> Regards >> Michael Baird >> >>> Use 10mhz channels instead of 20mhz. >>> >>> Kurt Fankhauser >>> WAVELINC >>> P.O. Box 126 >>> Bucyrus, OH 44820 >>> 419-562-6405 >>> www.wavelinc.com >>> >>> >>> -----Original Message----- >>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >>> Behalf Of Michael Baird >>> Sent: Saturday, May 02, 2009 6:54 AM >>> To: WISPA General List >>> Subject: [WISPA] Sector separation/isolation >>> >>> We are still experimenting with aligning sector's on our towers. We are >>> attempting to use 3 120 degree/13db/6.5 vb/7 degree downtilt, antennas >>> to cover 360 degrees. I just inspected the towers myself, and noticed >>> they are setup at 30 degrees/150 degrees/290 degrees (so they aren't >>> right exactly). So the problem that caused me to inspect the tower was >>> the signal level I can see the other AP's at. >>> >>> AP 30 can see AP 150 at -39 and AP 290 at -42. >>> AP 150 can see AP 30 at -42 and AP 290 at -70. >>> AP 290 can see AP 30 at -39 and AP 150 at -65. >>> >>> So I'm guessing that the reason 150/290 are much higher is because of >>> the additional 20 degrees between them. These AP's are on channels >>> 1/6/11, I'm wondering if I should worry about seeing the other AP's with >>> such a hot signal, and if so what are some good ways to isolate them >>> better. >>> >>> Regards >>> Michael Baird >>> >>> >>> ---------------------------------------------------------------------------- >>> ---- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/ >>> ---------------------------------------------------------------------------- >>> ---- >>> >>> WISPA Wireless List: wireless@wispa.org >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >>> Archives: http://lists.wispa.org/pipermail/wireless/ >>> >>> >>> >>> -------------------------------------------------------------------------------- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/ >>> -------------------------------------------------------------------------------- >>> >>> WISPA Wireless List: wireless@wispa.org >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >>> Archives: http://lists.wispa.org/pipermail/wireless/ >>> >>> >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> >> ------------------------------------------------------------------------ >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com >> Version: 8.5.323 / Virus Database: 270.12.13/2091 - Release Date: >> 05/01/09 17:52:00 >> >> > > -- > Scott Reed > Sr. Systems Engineer > GAB Midwest > 1-800-363-1544 x4000 > Cell: 260-273-7239 > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! 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