Cost a *lot* more than a fiber and a fiber cable if you can do the tower future climbs yourself
Scott Carullo Brevard Wireless (321) 205-1100 x102 On Apr 29, 2009, at 1:31 PM, Kurt Fankhauser <k...@wavelinc.com> wrote: > > $2.90 per foot for the 5/8 heliax. Its 25% cheaper than LMR-900, > weighs > less, and less loss. > > > -- > Kurt Fankhauser > WAVELINC > P.O. Box 126 > Bucyrus, OH 44820 > 419-562-6405 > www.wavelinc.com > > > --------- Original Message -------- > From: WISPA General List <wireless@wispa.org> > To: WISPA General List <wireless@wispa.org> > Subject: Re: [WISPA] RB333/433 eliminating self-interference test > Date: 04/29/09 12:31 > >> >> YOu getting good prices on that? >> >> * ----------------------------------------------------------- >> 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. >> >> >> >> >> >> Kurt Fankhauser wrote: >> > I don't hang radio's on towers for lightning reasons. I have > installed >> > Andrews 5/8 Heliax and put all my radios at the bottom. This has > worked out >> > very well for me and upgrades are a breeze because there is no > climbing >> > involved :) >> > >> > 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 Scott Carullo >> > Sent: Wednesday, April 29, 2009 10:48 AM >> > To: WISPA General List >> > Subject: Re: [WISPA] RB333/433 eliminating self-interference >> test >> > >> > >> > Another quick note... if you have individual units why even >> mount > them >> > like this inside a larger box? Why not put individual RB411s in > their own >> > small box (say DCE 7x6x2) and put the box outside right under >> the > antenna? >> > Then you would have even more seperation and distribute you >> eggs a > bit more >> > too... >> > >> > Scott Carullo >> > Brevard Wireless >> > 321-205-1100 x102 >> > >> > -------- Original Message -------- >> > >> >> From: "Kurt Fankhauser" <k...@wavelinc.com> >> >> Sent: Wednesday, April 29, 2009 10:36 AM >> >> To: "WISPA General List" >> <wireless@wispa.org> >> >> Subject: [WISPA] RB333/433 eliminating self-interference >> test >> >> >> >> About a week ago there was some discussion about 5ghz >> radio's > being >> >> installed in the same board and causing self-interference on > adjacent >> >> channels and possible even on the entire band thus >> decreasing > throughput >> >> >> > on >> > >> >> backhauls. Because even if you were operating on >> frequency's 5745 > and >> >> >> > 5825 >> > >> >> the two radio's would have side lobe harmonics that if >> installed > in the >> >> >> > same >> > >> >> enclosure they would still "hear" each other at >> that > short of separation. >> >> >> > I >> > >> >> decided to combat this problem and find a solution and >> share my >> >> >> > experience >> > >> >> with the list. >> >> >> >> >> >> >> >> I installed a single XR5 card into 3 different RB433's with > indoor >> >> enclosures. I also installed foil tape which I obtained >> from the > local >> >> >> > True >> > >> >> Value store for $2.49 on all the vent holes and unused >> bulkhead >> >> >> > connector >> > >> >> holes. This was done in order to prevent RF side lobe >> leaks from > the >> >> >> > three >> > >> >> radio's that would escape from the indoor enclosures >> themselves. > Having >> >> >> > only >> > >> >> 1 card inside each enclosures I should not have a heat >> problem as > the >> >> outdoor box will not be in direct sunlight. >> >> >> >> >> >> >> >> I then stacked all 3 enclosures on top of each other with >> dummy > loads on >> >> each of the N-bulkhead connectors and did some testing. >> This is > what I >> >> found: >> >> >> >> >> >> >> >> I set the bottom board as AP and the middle board as >> Client on > frequency >> >> 5825. Even with this close of separation the two XR5's >> could only > see >> >> >> > each >> > >> >> other at -83 on the same channel. With the top board >> connecting > to the >> >> bottom board they could only see each other at -90. Keep >> in mind > this is >> >> >> > on >> > >> >> the same frequency so adjacent channels should be much >> less than > that >> >> possibly even in the -100 ranges. Wish I had a spectrum >> analyzer. > With >> >> >> > two >> > >> >> boards separating the AP and Client there was no link at >> all. The > two >> >> >> > boards >> > >> >> could not even see each other in an AP scan. >> >> >> >> >> >> >> >> Just as a comparison with the same radio's installed all >> on a > RB600 not >> >> >> > on >> > >> >> top of each other but in the adjacent mpci slots the >> radio's were > all >> >> >> > seeing >> > >> >> each other at -30's. So I gained roughly -55 db of >> separation by > doing >> >> >> > it >> > >> >> this way. So all I would have to do now is make sure that >> the > antennas >> >> >> > on >> > >> >> the tower have at least 10 foot of vertical separation and >> the >> >> self-interference problem should be gone and I should be >> enjoying > much >> >> >> > more >> > >> >> throughput! >> >> >> >> >> >> >> >> Thoughts anyone? >> >> >> >> >> >> >> >> >> >> >> >> 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! 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/ >> >> >> >> > > > > --- > --- > --- > --- > -------------------------------------------------------------------- > 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/
