This is useful advice. Thanks a lot! We're no doubt going to have to build it up a few nodes at a time, starting at the injection point and building towards the most unserved area, a few hops away. I'm not sure if I want to touch 2.4, since it can be so noisy, or just use 900 and 5.8, but in the really remote places, 2.4 might be a good choice, with less foliage fade than 5.8.
I wonder how well 802.11n will deal with multipath. We will have multipath... probably no way around it when there are steep hills right behind you. We'll need hire some good local feet on the ground. At 7/19/2010 07:29 PM, MarlonS wrote: >I'd run 5 gig for the backhaul (ptmp) and 2.4 for distribution. > >Be VERY careful with distances and power levels you expect to be able to run >though. The power lines will cause a LOT of multipath. > >I'd put in 2x the ap's you think you'll need and run EVERYTHING at VERY low >power levels. > >OR swap out key poles. Go from 40' normal poles to 60 or 80' ones, then put >your gear above the power lines, by a long ways. Still build slow till you >know what effect the power lines are going to have on your signal. It's bad >enough to just shoot across them, but shooting in line with them will likely >be a royal PITA. > >Oh yeah, remember that multipath and self inflicted interference will often >NOT show up with just a couple of test systems online. It takes lots of >customers to really make things fail. And by then you have convinced >yourself that the design is proper because it's worked "just fine" all this >time. When all along it's NOT worked well, it's just fast enough and good >enough that no one noticed how much trouble it was having getting data >through. > >Have fun! Let us know what you land on for a good working design! >marlon > >----- Original Message ----- >From: "Fred R. Goldstein" <fgoldst...@ionary.com> >To: "WISPA General List" <wireless@wispa.org> >Sent: Monday, July 19, 2010 1:23 PM >Subject: [WISPA] Pole-mounted base stations > > > >A design I'm working on is in a hilly wooded rural/resort area, not > > farmland. It will need a fair number (perhaps a few dozen) sites to > > cover the planned turf. Each node will need both backhaul (mesh, in > > the loose sense) and access antennas. The obvious place to put these > > is atop utility poles. I think the local electric cooperative will > > cooperate and let us rent pole space. We may however need to put > > additional poles in some places. They seem cheaper than metal towers > > and are less likely to raise the locals' eyebrows. > > > > Does anyone out there have experience with this sort of > > arrangement? We're in the budgeting stage now. I have an idea what > > the radios cost but the installation might be the bigger deal. The > > big engineering firms are more used to fancy cellular and fiber > > installs, not WISP-style radios. So we may also want to bring in > > someone with this kind of WISP experience to do some consulting or > > setup with us too. 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/ -- 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/
