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is this link possible?

Posted: Mon Mar 15, 2010 12:44 am
by ihernandez
Hello guys, I would like to listen to your oppinions on this link:

Point A
Latitude 10°32'25.76"N
Longitude 66°52'51.45"W

Point B
Latitude 11°47'21.53"N
Longitude 66°36'42.09"W

The link is 150Km in length, point A is a very high mountain about 2000 mts above sea level and point B is an island with a small mountain and a 10mt tower.

Re: is this link possible?

Posted: Mon Mar 15, 2010 10:15 am
by pcglobelb
yes, in my opinion this is possible with the right hardware

Re: is this link possible?

Posted: Mon Mar 15, 2010 1:20 pm
by ihernandez
I think its possible too, I would be using XR5 and 33.4 dBi antennas which should give me a signal level at the RX site of -62.20 dBm

What do you think guys?

Re: is this link possible?

Posted: Mon Mar 15, 2010 1:31 pm
by pcglobelb
that sounds pretty good

Re: is this link possible?

Posted: Mon Mar 15, 2010 2:13 pm
by vladimirslk
Practics do not know how, but it works. Theoretics know how, but it doest work :))))

So, just make it try, then Youll know @100%

Re: is this link possible?

Posted: Mon Mar 15, 2010 3:00 pm
by Fumi
Be careful with fresnel zone + earth corbeture. I think you need more altitude in point B.

Re: is this link possible?

Posted: Mon Mar 15, 2010 6:23 pm
by 16mc
I have not looked a the link but providing you have clearance technically it will work. The issue becomes reliability which calculates out to 84% (with a 3ft 32dbi dish)... not good in my books. The thing is that there is a bit of magic involved and this link could work with out issue for years, then again it cold drop every few minutes or be fine for a few years then start to drop.

If you do construct this link, use the biggest antenna you can get, a 6ft will get you 99% still not good for a back haul (which should be at least 99.9% or better), bigger yet would be better but the dishes start to get very pricey. At least with 6ft (and a -50) it should at least provide for some stability.

Re: is this link possible?

Posted: Tue May 11, 2010 1:58 pm
by Fumi
Use this tools to check link aviability for iphone

WiPlan: Align antennas && Topograhpic profile
http://itunes.apple.com/es/artist/turbo ... d351879760

WiCalc: Wireless calculator
http://itunes.apple.com/es/app/wicalc/id351879757?mt=8