We have one 17 mile ptp that's effectively failed, but it happens there are three turbines directly in the path, I don't think that's all that common, just a stroke of bad luck. Took forever to figure out why a great link went to crap yet periodically would perform well. We replaced everything, some components multiple times. Google Earth updated imagery is what finally diagnosed our issue. When we ran alvarion breeze access II we ran into a ground issue when they put the first big farm in in that area. It resolved when the power company had to come back in and stretch the highlines. I don't understand the finer details, but it was an engineering snafu. When the design came in they didn't take into account the existing transmission line slack or something like that so it couldn't handle the increased load effectively. There were alot of those highline helicopters and massive wood pads in the area for about a year tensioning them. As that project progressed the issues we were seeing diminished
On Aug 14, 2018 6:36 PM, "Brian Webster" <[email protected]> wrote: If you have any licensed PTP links they need to protect your pathways by not placing any turbines and blade swing radius in a way to block it. I have worked on some of these in the past and mapped licensed links as rectangles based on the two points and widest part of the Fresnel zone. Would be a good idea for you to do that and provide it to the developer. You could also provide your unlicensed PTP links but I don’t think you can get any protection for them. Thank You, Brian Webster *From:* AF [mailto:[email protected]] *On Behalf Of *Adam Moffett *Sent:* Tuesday, August 14, 2018 6:17 PM *To:* [email protected] *Subject:* Re: [AFMUG] Wind Farm Experiences We've been on a wind tower for a few years. We're 20' below the tip of the blades.....just for the climber's sanity. You can imagine how unnerving it must be to get close to that blade. I'm not aware of any particular problems with being there. I don't know how the turbine would affect ptp. I think ken Hohoff said you could hear a warble in the audible alignment of FSK Canopy, but it didn't seem to impair service. That's obviously a different beast from anything we're using today. -Adam On 8/14/2018 5:38 PM, Bill Prince wrote: Ken Hohoff was the guy with all the wind farm experience. Haven't seen or heard from him in a while... bp <part15sbs{at}gmail{dot}com> On 8/14/2018 2:08 PM, Matt Corcoran wrote: A township within our wireless coverage area is in the public hearing/permitting/approval stage for the construction of a new large windfarm. What are your experiences providing service in the vicinity of Wind farms? Source of Problems? Opportunity? I am currently checking to see if it will interfere with any of our ptp links. I’m unsure if reflections off these big monopoles will cause any problems. Naturally, tall hills are an asset to the wind farms and Wisps alike. Has anyone ever used a wind turbine monopole as a transmit location?. Matt Corcoran Network Engineer Stratos Networks -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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