Aluminum is moderately effective at attenuating microwave rf. Steel is needed to dampen EMP (from lightning strikes).
-------------------------------------------------- From: "Josh Luthman" <j...@imaginenetworksllc.com> Sent: Wednesday, December 02, 2009 8:35 PM To: "WISPA General List" <wireless@wispa.org> Subject: Re: [WISPA] Multiple Radio cards in an enclosure > Does die cast aluminum count as metal in this case? Do you normally use > steel if not? > > I use these: > http://quicklinkwireless.com/Itemdesc.asp?ic=DCE-H-LG-2&eq=&Tp= > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > "The secret to creativity is knowing how to hide your sources." > --- Albert Einstein > > > On Wed, Dec 2, 2009 at 10:30 PM, Marlon K. Schafer > <o...@odessaoffice.com>wrote: > >> I've given up on this. There is just too much cross talk. I put all >> radios >> in the same band in their own METAL enclosure nowadays. I try to keep >> them >> at least 3 or 6 feet apart too. Life is much much nicer. >> marlon >> >> ----- Original Message ----- >> From: "Mike" <m...@aweiowa.com> >> To: "WISPA General List" <wireless@wispa.org> >> Sent: Wednesday, December 02, 2009 8:13 AM >> Subject: [WISPA] Multiple Radio cards in an enclosure >> >> >> > Since I am probably one of the veterans called out yesterday for my >> > messaging etiquette, I am changing the subject. >> > >> > I am interested in the multiple radios in an enclosure idea. I do >> > have a couple with 5.8 and 2.4 gear in the same box, but have been >> > afraid to put cards in the same band in the same case. >> > >> > The foil spacer you put between cards Bob, do you then ground it to >> > create a sort of Faraday shield? I know the XRx cards do a good job >> > of shielding if you attach the pigtail. >> > >> > How about the receive sensitivity on the 411 cards? Has that been an >> > issue? I think the XR cards have better specs. Wouldn't having >> > multiple 411 cards in the same box possibly have desense issues too? >> > >> > Mike >> > >> > >> > At 09:41 AM 12/2/2009, you wrote: >> >>Forgot to add, if you're concerned with any RF collisions inside the >> >>box, >> >>the other thing I talked about earlier, having just 3 411 cards in >> >>their >> >>own >> >>box at the sector then running Cat5 to transparent bridge the 411's to >> >>a >> >>central RouterOS device would take any of that issue totally away. >> That's >> >>one that I'm doing just to do it, basically. Was an idea from someone >> >>a >> >>couple of months ago. (I actually listen to you guys) Had a 600a >> >>doing >> >>nothing and some 411 cards "so why not play?" was my thinking. >> >> >> >>Bob- >> >> >> >> >> >>-----Original Message----- >> >>From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >> >>Behalf Of Mike >> >>Sent: Wednesday, December 02, 2009 9:48 AM >> >>To: WISPA General List >> >>Subject: Re: [WISPA] Sectors >> >> >> >>Have you had any issues with putting 3 radio cards in the same >> >>spectrum in the same box? I've thought about that but wondered if >> >>there would be desense issues where one transmitting desensitizes >> >>another one listening. >> >> >> >> >> >>At 08:38 AM 12/2/2009, you wrote: >> >> >Yep, looks like you're hitting the wall. We aren't lucky enough to >> push >> >> >3 >> >> >meg here, the most is usually 1 so again, all depends on your >> >> >customer >> >>base. >> >> > >> >> >I'd say if you already have 35 on that one AP, just splitting it into >> >> >2 >> >> >180 >> >> >degree sectors will just cost you cash as soon as you gain a few more >> >> >customers. You already have 35 pulling it down, sounds like if you >> just >> >> >do >> >> >2 180's, if split evenly (and it never will be) that would put you to >> >> >where >> >> >you probably want to be for smooth delivery but not much room for >> >> >more >> >> >growth. I'd go with 3 120's and a 433AH with 3 cards on it, one per >> >>sector. >> >> >I have a few like that and it works fine for what I do but again, I >> only >> >> >dole out 1mb per sub typically. I've also been upgrading some of my >> >> >remote >> >> >AP's to one 433AH with only one radio installed and an Omni. The >> >> >anticipated upgrade path is to just add a sector or 2 and radio card >> >> >as >> >> >needed to the point where I have 3 sectors. Keeping the Omni of >> >> >course >> >> >until the third sector is needed. That's something someone already >> >> >suggested doing and I like the economics of it. >> >> > >> >> >Bob- >> >> > >> >> > >> >> > >> >> >-----Original Message----- >> >> >From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] >> On >> >> >Behalf Of Jason Hensley >> >> >Sent: Wednesday, December 02, 2009 9:26 AM >> >> >To: 'WISPA General List' >> >> >Subject: Re: [WISPA] Sectors >> >> > >> >> >Max 3meg - b only mode on this particular AP. Most are still able to >> >> >get >> >> >that, but we're seeing a decline on how many can pull 3meg. At peak >> >> >times, >> >> >we've seen it to where users aren't able to get much over 1meg, but >> >> >that's >> >> >not happening very often right now. >> >> > >> >> > >> >> > >> >> >-----Original Message----- >> >> >From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] >> On >> >> >Behalf Of Robert West >> >> >Sent: Wednesday, December 02, 2009 8:23 AM >> >> >To: 'WISPA General List' >> >> >Subject: Re: [WISPA] Sectors >> >> > >> >> >Yeah, how much bandwidth are you passing to those 35 customers, >> >> >Jason? >> >>Just >> >> >curious. >> >> > >> >> >Bob- >> >> > >> >> > >> >> > >> >> >-----Original Message----- >> >> >From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] >> On >> >> >Behalf Of os10ru...@gmail.com >> >> >Sent: Wednesday, December 02, 2009 9:10 AM >> >> >To: WISPA General List >> >> >Subject: Re: [WISPA] Sectors >> >> > >> >> >Do you think you're hitting the limit of 802.11b/g or is it the lack >> >> >of >> >> >horsepower on the AP's CPU? >> >> > >> >> >Greg >> >> >On Dec 2, 2009, at 8:33 AM, Jason Hensley wrote: >> >> > >> >> > > On this same subject, would it be better to put up 3 individual >> AP's, >> >> > > or >> >> > > would something like the Deliberant Quad work well if the issue is >> AP >> >> > > overload. I have an AP that has 35 subscribers right now. We've >> >> > > seen a >> >> > > performance drop on it and are considering sectoring. >> >> > > >> >> > > Any thoughts on a dual (or quad) radio on a single board vs >> >> > > multiple >> >> >boards >> >> > > with single radios? >> >> > > >> >> > > >> >> > > >> >> > > -----Original Message----- >> >> > > From: wireless-boun...@wispa.org >> >> > > [mailto:wireless-boun...@wispa.org >> ] >> >> > > On >> >> > > Behalf Of Rick Harnish >> >> > > Sent: Wednesday, December 02, 2009 6:28 AM >> >> > > To: 'WISPA General List' >> >> > > Subject: Re: [WISPA] Sectors >> >> > > >> >> > > Mark, >> >> > > >> >> > > If I remember right, you are in Missouri. I was looking for the >> >>strength >> >> >of >> >> > > your omni. We have had good success with 9 db omni's in the >> >> > > Indiana >> >> > > farmland. When we need to sectorize but the market capacity is >> >> > > not >> >> > > that >> >> > > high, we often go to (2) 180 Superpass 9 db sectors. We have had >> >> > > good >> >> >luck >> >> > > with them over the years. They improve our signal to existing >> >> > > clients >> >>and >> >> > > enable affordable expansion in rural areas. If the market will >> >> > > justify >> >>3 >> >> > > sectors, I would go that way though. >> >> > > >> >> > > Many of our Wireless POPs are pico-cells and we try to limit our >> >>salesmen >> >> >to >> >> > > a 6 mile diameter around the tower. Although, we can often go >> >> > > farther, >> >>we >> >> > > try to stay inside these guidelines when possible. To achieve a >> >> > > high >> >> >density >> >> > > of broadcast stations, many locations are needed. Luckily, we are >> >> > > well >> >> > > established in our area and have most of these sites already in >> >>operation. >> >> > > Your mileage may vary given your topology and broadcast site >> density. >> >> > > >> >> > > Rick Harnish >> >> > > >> >> > >> -----Original Message----- >> >> > >> From: wireless-boun...@wispa.org [mailto: >> wireless-boun...@wispa.org] >> >> > >> On >> >> > >> Behalf Of Mark McElvy >> >> > >> Sent: Tuesday, December 01, 2009 10:51 PM >> >> > >> To: WISPA General List >> >> > >> Subject: [WISPA] Sectors >> >> > >> >> >> > >> I am running 2.4 HPOL It has taken about 1.5 yrs to grow this AP >> >> > >> to >> >> > >> 32 >> >> > >> subs. >> >> > >> >> >> > >> -----Original Message----- >> >> > >> From: wireless-boun...@wispa.org [mailto: >> wireless-boun...@wispa.org] >> >> > >> On >> >> > >> Behalf Of 3-dB Networks >> >> > >> Sent: Tuesday, December 01, 2009 9:37 PM >> >> > >> To: 'WISPA General List' >> >> > >> Subject: Re: [WISPA] Sectors >> >> > >> >> >> > >> What frequency band and polarization? >> >> > >> >> >> > >> I would also strongly consider your reasoning for moving from the >> >> > >> Omni >> >> > >> to >> >> > >> the sectors. If it is because your AP is overloaded so you need >> >> > >> to >> >> > >> offload >> >> > >> some, 3 AP's might be attractive for future proofing sakes. >> >> > >> >> >> > >> Daniel White >> >> > >> 3-dB Networks >> >> > >> http://www.3dbnetworks.com >> >> > >> >> >> > >> >> >> > >> -----Original Message----- >> >> > >> From: wireless-boun...@wispa.org [mailto: >> wireless-boun...@wispa.org] >> >> > >> On >> >> > >> Behalf Of Mark McElvy >> >> > >> Sent: Tuesday, December 01, 2009 8:29 PM >> >> > >> To: WISPA General List >> >> > >> Subject: Re: [WISPA] Sectors >> >> > >> >> >> > >> 9db >> >> > >> >> >> > >> -----Original Message----- >> >> > >> From: wireless-boun...@wispa.org [mailto: >> wireless-boun...@wispa.org] >> >> > >> On >> >> > >> Behalf Of Rick Harnish >> >> > >> Sent: Tuesday, December 01, 2009 7:42 PM >> >> > >> To: 'WISPA General List' >> >> > >> Subject: Re: [WISPA] Sectors >> >> > >> >> >> > >> What size omni are you using? >> >> > >> >> >> > >>> -----Original Message----- >> >> > >>> From: wireless-boun...@wispa.org >> >> > >>> [mailto:wireless-boun...@wispa.org] >> >> > >> On >> >> > >>> Behalf Of Josh Luthman >> >> > >>> Sent: Tuesday, December 01, 2009 7:59 PM >> >> > >>> To: WISPA General List >> >> > >>> Subject: Re: [WISPA] Sectors >> >> > >>> >> >> > >>> That is the general suggestion - two 120s. That one guy that >> >> > >>> does >> >> > >>> antenna design said so :) >> >> > >>> >> >> > >>> You will get some less coverage then three 120s but at the cost >> >> > >>> of >> >> > >> the >> >> > >>> extra radio/antenna it isn't cost efficient. >> >> > >>> >> >> > >>> On 12/1/09, Mark McElvy <mmce...@accubak.com> wrote: >> >> > >>>> I need to sector a tower that currently is an omni. I don't >> >> > >>>> really >> >> > >>> want >> >> > >>>> to go to 3x 120's but find it hard to find 180's and have heard >> >> > >> they >> >> > >>>> don't tend to work great. I have also heard 2x 120's will work, >> >> > >>>> any >> >> > >>>> comments? >> >> > >>>> >> >> > >>>> >> >> > >>>> >> >> > >>>> Mark >> >> > >>>> >> >> > >>>> >> >> > >>>> >> >> > >>>> >> >> > >> >> --------------------------------------------------------------------- >> >> > >>> ----------- >> >> > >>>> 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/ >> >> > >>>> >> >> > >>> >> >> > >>> >> >> > >>> -- >> >> > >>> Josh Luthman >> >> > >>> Office: 937-552-2340 >> >> > >>> Direct: 937-552-2343 >> >> > >>> 1100 Wayne St >> >> > >>> Suite 1337 >> >> > >>> Troy, OH 45373 >> >> > >>> >> >> > >>> "The secret to creativity is knowing how to hide your sources." >> >> > >>> --- Albert Einstein >> >> > >>> >> >> > >>> >> >> > >>> >> >> > >> >> ----------------------------------------------------------------------- >> >> > >>> --------- >> >> > >>> 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: 8.5.426 / Virus Database: 270.14.89/2539 - Release >> >> > >>> Date: >> >> > >>> 12/01/09 19:32:00 >> >> > >> >> >> > >> >> >> > >> >> >> > >> >> ----------------------------------------------------------------------- >> >> > >> - >> >> > >> -------- >> >> > >> 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: 9.0.709 / Virus Database: 270.14.72/2511 - Release Date: >> >> > >> 12/01/09 01:59:00 >> >> > >> >> >> > >> >> >> > >> >> ----------------------------------------------------------------------- >> >> > >> - >> >> > >> ---- >> >> > >> ---- >> >> > >> 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: 9.0.709 / Virus Database: 270.14.72/2511 - Release Date: >> >> > >> 12/01/09 01:59:00 >> >> > >> >> >> > >> >> >> > >> >> ----------------------------------------------------------------------- >> >> > >> --------- >> >> > >> 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: 8.5.426 / Virus Database: 270.14.89/2539 - Release Date: >> >> > >> 12/01/09 19:32:00 >> >> > > >> >> > > >> >> > > >> >> > > >> >> >> >--------------------------------------------------------------------------- >> >>- >> >> > > ---- >> >> > > 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/ >> >> >> >> >> >> >> >> >> >> >>---------------------------------------------------------------------------- >> >>---- >> >>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/
