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/
