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: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] >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: wireless-boun...@wispa.org > > [mailto:wireless-boun...@wispa.org] 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: 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/ > > -- > 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: 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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