Just a dumb question... If DFS is not certified on MT and is required for 5.3 operation how could you drum up support for planning something illegal?
Scott Carullo Brevard Wireless 321-205-1100 x102 -------- Original Message -------- > From: "Tom DeReggi" <wirelessn...@rapiddsl.net> > Sent: Tuesday, April 21, 2009 11:40 AM > To: "WISPA General List" <wireless@wispa.org> > Subject: [WISPA] using multiple 5.3 cards in a Mikrotik > > I have read numerous discussions on problems regarding self interference > between two mPCI cards inserted in the same SBC, on same Freqs. Some > reporting need for 40Mhz of center channel seperation. > > These are the factors... > U.FL vs MMCX connectors > One vs two Antenna Ports on a single mpci card (for example will second > unused antenna port on card without pigtail hear noise. Does the second port > need to be terminated?) > Proximity of mPCI slots to each other. (ADI/Lucaya side by side versus MT > 433 Stacked) > High power embedded amped vs low power cards. > Software thresholds vs not (min and max receive threshold and adapative > noise immunity) > Bleed over at card versus bleed over at antenna. (polarity won't help at > card's port) > Interference from Antenna port RF vs internal electronics generated RF noise > (used to see this in PCs if HDD were to close to MB) > One manufacturer's card vs another's. > Receiver overload vs interference > > Unsubstantiated guestimates about this topic won;t really help because there > are a LOT of variables contributing to the problem. > > MT433 or equivellent will most like work excellent if each card has a > different freq such as 2.4, 5.8, and 900. Unless the problem is Receiver > Overload. Where in that case maybe 2 CM9s could work better even if both on > adjacent channel 5.3? If interference is based on Antenna placement, well > thats easilly controllable by a field tech at time of installation. But what > I'm concerned about is knowing that the radio system itself is made to be > non-ninterfering internally. From a remote management perspective, its going > to be painful tracking which radio systems have to be how far apart in > channels to not interfere troubleshooting on-the-fly, without some baseline > stats defined a head of time. > > So this brings me to three questions of higher relevence..... > > 1) What do we need to do to guarantee that two cards can co-exist and be > used on adjacenet channels without interference at the radio card hardware > level (not including antenna placement factors that could allow intference) > > 2) Has anyone actually used a Spectrum Analyzer or Noise meter to actually > measure the RF bleed between to mounted cards? With accurate results of what > the interference levels are? > > 3) Would WISP members be interested in contributing to a small fund to pay > someone to actually accurately measure the results for us? > > I'd like to specifically know for the 433 board. If using the higher quality > MMCX w/ single antenna port cards (MT brand card), will 10Mhz of channel > seperation be enough, to get two 5.3Ghz channels operating correctly? > > Tom DeReggi > RapidDSL & Wireless, Inc > IntAirNet- Fixed Wireless Broadband > > > ----- Original Message ----- > From: "Eje Gustafsson" <e...@wisp-router.com> > To: "'WISPA General List'" <wireless@wispa.org> > Sent: Monday, April 20, 2009 4:39 PM > Subject: Re: [WISPA] is this router overloaded? > > > > And 5.2 is not allowed for outdoor usage. So Franks unit is an indoor unit > > I > > would suspect he is suffering from multipath reflections. > > > > Besides on the radar stuff.. The way DFS is designed in MT it will never > > be > > able to get certified. First of it must continuously look for and detect > > radar not just when it first enable the interface. Secondly it at least > > did > > a horrible job in actually detecting radar signatures. > > > > Besides 5.2 is not part of the band you can use even with a certified > > radar > > detecting device. > > > > / Eje > > > > -----Original Message----- > > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > > Behalf Of Dennis Burgess - LTI > > Sent: Monday, April 20, 2009 3:32 PM > > To: WISPA General List > > Subject: Re: [WISPA] is this router overloaded? > > > > Part of the 5.2 band. All of the radar patters are in MT, just not > > certified. > > > > * ----------------------------------------------------------- > > Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer > > WISPA Board Member - wispa.org <http://www.wispa.org/> > > Link Technologies, Inc -- Mikrotik & WISP Support Services > > WISPA Vendor Member* > > *Office*: 314-735-0270 *Website*: http://www.linktechs.net > > <http://www.linktechs.net/> > > */LIVE On-Line Mikrotik Training/* > > <http://www.linktechs.net/onlinetraining.asp> > > > > The information transmitted (including attachments) is covered by the > > Electronic Communications Privacy Act, 18 U.S.C. 2510-2521, is intended > > only > > for the person(s) or entity/entities to which > > it is addressed and may contain confidential and/or privileged material. > > Any > > review, retransmission, dissemination or other use of, or taking of any > > action in reliance upon, this information by persons or entities other > > than > > the intended recipient(s) is prohibited, If you > > received this in error, please contact the sender and delete the material > > from any computer. > > > > > > > > > > > > Gino Villarini wrote: > >> 5180.....hmmm!!! > >> > >> Not to bust anyones head but you are using an uncertified device on an > >> illegal channel > >> > >> Sent from my Motorola Startac... > >> > >> > >> On Apr 20, 2009, at 3:20 PM, "Josh Luthman" > >> <j...@imaginenetworksllc.com> wrote: > >> > >> > >>> Gino - Top right corner. > >>> > >>> Did the CPU just jump or has it casually been like that? > >>> > >>> I've never had 5 radios in any board, I don't know if that would > >>> cause a lot > >>> of usage or not. Most any MT box I've seen is <5% CPU. A lot of > >>> NAT as was > >>> mentioned would be the first place I'd look. > >>> > >>> Josh Luthman > >>> Office: 937-552-2340 > >>> Direct: 937-552-2343 > >>> 1100 Wayne St > >>> Suite 1337 > >>> Troy, OH 45373 > >>> > >>> Those who don't understand UNIX are condemned to reinvent it, poorly. > >>> --- Henry Spencer > >>> > >>> > >>> On Mon, Apr 20, 2009 at 3:14 PM, Kevin Neal <ke...@safelink.net> > >>> wrote: > >>> > >>> > >>>> Is this doing any NAT? Is connection tracking enabled? Do you > >>>> have all > >>>> unneeded packages disabled? We have a few RB600's out there and > >>>> they do > >>>> fine for the most part, we don't do any wireless on the 600's and > >>>> all of > >>>> them have the 564 daughterboard in them. > >>>> > >>>> -Kevin Neal > >>>> > >>>> > >>>> > >>>> -----Original Message----- > >>>> From: wireless-boun...@wispa.org [mailto:wireless- > >>>> boun...@wispa.org] On > >>>> Behalf Of Kurt Fankhauser > >>>> Sent: Monday, April 20, 2009 12:50 PM > >>>> To: 'WISPA General List' > >>>> Subject: [WISPA] is this router overloaded? > >>>> > >>>> I have a RB600 here that I've taken a screenshot of. No interfaces > >>>> are > >>>> bridged, everything is routed and I'm noticing some lag in the > >>>> traffic that > >>>> passes though this device during peak use. I suspect that the 41 > >>>> RIP routes > >>>> might have something to do with it as actual throughput isn't that > >>>> much > >>>> sometimes topping out around 8Mbps. Just want to hear from others > >>>> and if > >>>> there is any suggestions on how I might speed this up let me know. > >>>> CPU > >>>> usage > >>>> on it is around 40-50%. > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> Kurt Fankhauser > >>>> WAVELINC > >>>> P.O. Box 126 > >>>> Bucyrus, OH 44820 > >>>> 419-562-6405 > >>>> www.wavelinc.com > >>>> > > > > > > > > > > ---------------------------------------------------------------------------- ---- > > 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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