Im reaching out to them, they did a path study for a similar thing on one of our links, it was not on our dime for that link, so maybe we didnt get a full dataset and report back, we just got a yes/no on impact, but not enough detail to make a risk assessment. They told me they have access to the turbine database outside the normal link analysis.
On Fri, Feb 28, 2020 at 6:47 PM Eric Nielsen <ericlniel...@gmail.com> wrote: > Comsearch does something called a “reverse geoplanner”. If you provide > them with the turbine locations and the path details they’ll tell you the > risk of fresnel obstruction. > They’re equipped to do this because they perform the microwave studies for > wind farms. > > On Fri, Feb 28, 2020 at 5:43 PM Steve Jones <thatoneguyst...@gmail.com> > wrote: > >> I have a 3 link path i need to turn up in 11ghz. we drove the path >> yesterday. 2 legs are golden. one however is problematic, ive got two wind >> turbines that are in or just outside the fresnel. If it were one, id >> probably be inclined to risk the impact if there was just one turbine, but >> two is iffy without some good maths to support it. >> The path is 5.5 miles >> the first turbine is 3.64 mile >> the second is about 4.69 miles >> Fresnel is about 25' radius at that distance max if the calculator is >> right >> the first turbine is maybe 100' from boresite >> the second is probably 150' >> These arent our normal turbines, these the the bad motherfucker turbines, >> so the blades are like a million feet long, actually IIRC theyre 224' on >> something like a 400' pedestal. >> >> I need to pull the specs again on those and get better than google earth >> GPS coordinates on the potential end points, and some better actual heights >> >> that brings be to the question, how do i calculate a partial fresnel >> obstruction with a radius like the blade pattern. >> >> I figure boresite view with a 50' circle would give me worst case >> fresnel, then i just draw the arc of the turbine path into that as an >> obtruction for each maybe just shade the polygon it create as a complete >> obstruction. >> >> So once i have that info, what tool can i put it into to calculate the >> impact? everything we use just has an obstruction height. Would i be able >> to just take the distance from edge of fresnel into the furthest point of >> the polygon? Would I need to calculate more loss than that? >> >> Im planning on sticking a 5ghz link up anyway pending licensing, so i >> assume i can just extrapolate the loss from that >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > -- > Eric Nielsen > 571-508-7409 > ericlniel...@gmail.com > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
-- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
