At 7/30/2010 01:06 PM, Steve Barnes wrote: >Fred have you made a good quality link with Mikrotik using N-MiMo I >own a set of MT units with R52HN cards that drove me crazy for about >3 weeks. Never made the MiMo work real well with MT.
Well, no... If it doesn't work reliably, that's good information to have! My current idea is to use UBNT radio boards in a MikroTik Routerboard mPCI slot. The UBNT boards spec out higher than MTs, and are supported by MT's RouterOS. Same Atheros chips, after all; it might however have a better LNA or other front-end components. Faisal, I'm not looking to mount radios in this antenna -- the goal is that there will be one active Routerboard package mount per site, and a few antennas connected off of it. CPE would need radios in the antenna, though, and that's still an open question. UBNT, at least, makes them pre-packaged, which is good for CPE; MT just sells boards for integrators. I'm not familiar with MARS antennas; I'll look into them. Thanks for the tip. >2- PacWireless dual pol 2 ft dish with MT a both ends 12 >miles. Could make them work as 802.11a but the N was very hard to >get working right and never got the speeds that I needed. Was told >that I had bad dishes or cables and not aligned right by company >that I got the setup from after they worked on them for 4 hours one >day remotely. Changed the radios to a old set of RadWin radios I >had and went to 49MB in 15 seconds. Never got more than 18 meg out >of the Mikrotiks. So now I have some extra MT 411ah cards that I >will put in a AP somewhere and some R52NH that I don't have time to >mess with. I will just use the RADWin stuff for critical links and >UBNT stuff for secondary links. Good to know. Radwin looks expensive (new) but UBNT seems like a good deal. >-----Original Message----- >From: [email protected] [mailto:[email protected]] >On Behalf Of Fred Goldstein >Sent: Friday, July 30, 2010 12:43 PM >To: WISPA General List >Subject: Re: [WISPA] MIMO 5.8 GHz panel antennas? > >At 7/30/2010 12:21 PM, Steve Barnes wrote: > >So you are wanting a dual pol panel with N male connectors? > >Basically, yes, though it doesn't have to be N per se. (I'm not >picky, so long as the whole thing is suitable for outdoor use in a >seriously rugged climate with lots of lake effect snow.) > >BTW I do notice a Proxim three-polarization antenna, which I suppose >could work with the SR71-A, but that seems like overkill, and it >only has 17 dB gain, which puts it into the sector category. They >also have a dual-pol 23 dB unit. They call these subscriber units >but I suppose they could work anywhere. Of course the Proxim stuff >comes at a Proxim price; I could probably gut a Powerbridge for half as much. > > >Steve Barnes > >RC-WiFi Wireless Internet Service > > > > > >-----Original Message----- > >From: [email protected] [mailto:[email protected]] > >On Behalf Of Fred Goldstein > >Sent: Friday, July 30, 2010 12:14 PM > >To: WISPA General List > >Subject: Re: [WISPA] MIMO 5.8 GHz panel antennas? > > > >The trouble with the Powerbridge is that it has the radio built in, and > >is thus an Ethernet hop away from the switch (probably a Routerboard), > >and one more active device to manage. Also, since a Ubiquiti card > >drives the radio, it can only run in Airmax or 802.11 mode, not however > >the Routerboard might be able to drive it (for exmmple, MT's new nv2 > >mode). > > > >What I want is the Powerbridge's antenna by itself! That would be > >exactly what I'm looking for. ARC Wireless makes a "panel antenna for > >IES", but again that presumes a Routerboard-class radio built in. > >Would it work with just, uh, cable jumpers to an outboard radio? > > > >BTW I'm using RadioMobile to calculate paths, and while the one in > >question "works", it is not a perfect one; it shows some Fresnel zone > >interference along the way, since it's hilly terrain. I may have to > >raise or lower the antenna a foot or two to avoid nulls. > > > >At 7/30/2010 11:59 AM, you wrote: > > >Yea, it's wrong. Try something besides MCS14 or MCS15 on their > > >calculator, or a better link calculator. I've got NB22's with +25 > > >deployed at 10 miles. > > > > > >Regards > > >Michael Baird > > > > http://www.ubnt.com/linkcalculator/ > > > > > > > > Says that this would be a marginal signal at 10 miles. (16090 > > > meters) for the PowerBridge M5 link margin 14.4 > > > > > > > > Steve Barnes > > > > RC-WiFi Wireless Internet Service > > > > > > > > > > > > -----Original Message----- > > > > From: [email protected] > > > [mailto:[email protected]] On Behalf Of Michael Baird > > > > Sent: Friday, July 30, 2010 11:28 AM > > > > To: WISPA General List > > > > Subject: Re: [WISPA] MIMO 5.8 GHz panel antennas? > > > > > > > > They have a Powerbridge M5 that includes a 25 db MIMO panel. > > > > > > > > Regards > > > > Michael Baird > > > > > > > >> I wonder if any of you have experience with 5.8 GHz MIMO antennas. > > > >> I'm trying to design a point-to-point link, about 10 miles, that > > > >> will carry a high percentage of a whole network's backhaul. So > > > >> I'd like it to go at about 80 Mbps, MCS 12 in 20 MHz. > > > >> The UBNT SR71-15 card can plug into a Routerboard and thus feed > > > >> two antennas, or a dual-polarized antenna. I'd rather have one > > > >> antenna than two. I can find dual-feed 2' dishes, but they're on > > > >> the large side, with wind load and visibility issues. And I see > > > >> a lot of single-feed panels, which can handle 11a-type traffic. > > > >> > > > >> I can run Ethernet into an external radio that comes in a panel, > > > >> but that adds a hop and more complexity, and frankly most of the > > > >> specs don't match the SR71-15's. There will be at least three > > > >> antennas at each end, possibly four (backhaul plus local access). > > > >> MiniPCI radios in, say, an RB600 seem easier to deal with. > > > >> > > > >> But who makes a standalone 5.8 GHz dual-polarized panel, > > > >> something the > > > >> 22-25 dB range (13-16")? UBNT makes MIMO sector antennas, and > > > >> makes panels with built-in radios, but it doesn't seem to have a > > > >> PTP panel antenna to mate with the SR71-15. ARC has one that > > > >> works with its built-in enclosure system; do I just leave the > > > >> enclosure empty and route the cables through it? (Seems hokey.) > > > >> RADwin has one designed for its own system; I don't know how well > > > >> it would work otherwise and it's way expensive. Suggestions? Thanks! > > > >> > > > >> -- > > > >> Fred Goldstein k1io fgoldstein "at" ionary.com > > > >> ionary Consulting http://www.ionary.com/ > > > >> +1 617 795 2701 > > > >> > > > >> > > > >> > > > >> ----------------------------------------------------------------- > > > >> -- > > > >> --- > > > >> ---------- > > > >> WISPA Wants You! Join today! > > > >> http://signup.wispa.org/ > > > >> ----------------------------------------------------------------- > > > >> -- > > > >> --- > > > >> ---------- > > > >> > > > >> WISPA Wireless List: [email protected] > > > >> > > > >> 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: [email protected] > > > > > > > > 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: [email protected] > > > > > > > > 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: [email protected] > > > > > >Subscribe/Unsubscribe: > > >http://lists.wispa.org/mailman/listinfo/wireless > > > > > >Archives: http://lists.wispa.org/pipermail/wireless/ > > > > -- > > Fred Goldstein k1io fgoldstein "at" ionary.com > > ionary Consulting http://www.ionary.com/ > > +1 617 795 2701 > > > > > > > >----------------------------------------------------------------------- > >--------- > >WISPA Wants You! Join today! > >http://signup.wispa.org/ > >----------------------------------------------------------------------- > >--------- > > > >WISPA Wireless List: [email protected] > > > >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: [email protected] > > > >Subscribe/Unsubscribe: > >http://lists.wispa.org/mailman/listinfo/wireless > > > >Archives: http://lists.wispa.org/pipermail/wireless/ > > -- > Fred Goldstein k1io fgoldstein "at" ionary.com > ionary Consulting http://www.ionary.com/ > +1 617 795 2701 > > > >-------------------------------------------------------------------------------- >WISPA Wants You! Join today! >http://signup.wispa.org/ >-------------------------------------------------------------------------------- > >WISPA Wireless List: [email protected] > >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: [email protected] > >Subscribe/Unsubscribe: >http://lists.wispa.org/mailman/listinfo/wireless > >Archives: http://lists.wispa.org/pipermail/wireless/ -- Fred Goldstein k1io fgoldstein "at" ionary.com ionary Consulting http://www.ionary.com/ +1 617 795 2701 -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
