Mike, Have you got any pictures of that ?
It would be worth seeing for sure Cheers, Robert Mike Hammett wrote: > I have a somewhat large NEMA box (1'x2.5'x3') with 4x RB411AHs with an XR5 > in each. At the bottom of the tower, I have a box with an RB493 and all the > PoE business. > > Each RB411 is mounted with self adhesive plastic to some sheet metal. > > I don't have any experience with self-interference inside an enclosure, but > I bought some sheet metal and cut\bent it into L shapes, securing the base > to the enclosure with the RouterBoards perpendicular to the enclosure's back > wall. I did that just to be safe. Pigtails run from the cards to the > bottom of the enclosure. No RouterBoard or radio can line of sight see > another. > > Previously in this same enclosure I had a PC motherboard with an RB14 > (modified by MT to support higher power cards) with 4x SR5s on it. I didn't > have any apparent RF problems then, but I switched to this other method > because I had a phantom lockup problem... every 30 - 45 days it would lock > up and I couldn't determine the source. > > The 411 isn't the card, but the computer you're plugging the cards into. > When I did this, the XR5s were the best quality cards available. This exact > setup has been in place since this summer and I haven't had any problems > yet. The previous system was in place ever since the SR5 came out. > > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > > > -------------------------------------------------- > From: "Mike" <m...@aweiowa.com> > Sent: Wednesday, December 02, 2009 10:13 AM > To: "WISPA General List" <wireless@wispa.org> > 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! 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