Are any of the towers setup such that you could cross the circle? In other words, if you had towers 1 to 20 in a ring, have a secondary link between towers 4 and 16 for instance.
This would require routing, and preferably dynamic routing, but then you would have some redundancy. John Marlon K. Schafer wrote: > I don't know if I'll be able to put some many antennas on the towers. > > How close together would I need the towers to prevent the rain fade outage > at 18 gig? > > Aren't there any 5.8 systems that will do this reliably in the first place? > I shouldn't need 5.x for distribution so I could use it all for backhaul. > I'll have 2.4, 3.65, 4.9 and hopefully, someday, TVBD for the consumers. > marlon > > ----- Original Message ----- > From: "Brian Webster" <[email protected]> > To: "WISPA General List" <[email protected]> > Sent: Tuesday, March 03, 2009 9:44 PM > Subject: Re: [WISPA] 100 meg full duplex backhaul > > > >> The 5.8 GHz backup links will help you deal with outages due to >> environmental conditions such as rain fade. That has to be factored in for >> links when you operate above 10 GHz. Even if you run a loop configuration >> you could have a fade condition that could block out a whole tower site >> severing your links to that location in both directions of your loop. >> Another path at a lower frequency with spatial diversity from your primary >> link (different mounting heights) would at least keep that site up though >> maybe not at full speed. >> >> >> >> Thank You, >> Brian Webster >> >> -----Original Message----- >> From: [email protected] [mailto:[email protected]]on >> Behalf Of Marlon K. Schafer >> Sent: Wednesday, March 04, 2009 12:26 AM >> To: WISPA General List >> Subject: Re: [WISPA] 100 meg full duplex backhaul >> >> >> Thanks. >> >> Do you think we need the unlicensed for each hop if the entire network is >> build in a circle? >> marlon >> >> ----- Original Message ----- >> From: "Travis Johnson" <[email protected]> >> To: "WISPA General List" <[email protected]> >> Sent: Tuesday, March 03, 2009 9:12 PM >> Subject: Re: [WISPA] 100 meg full duplex backhaul >> >> >> >>> Licensed 18ghz links with 5.8ghz backup links for each hop. Figure >>> $15,000 per link for everything. >>> >>> Travis >>> Microserv >>> >>> Marlon K. Schafer wrote: >>> >>>> Hi All, >>>> >>>> I'm looking for some gear that'll be rock solid at 15 to 20 miles. Some >>>> links may be less, but I'm not counting on that. >>>> >>>> I'll be hauling public safety, private vpns, and normal internet >>>> traffic. >>>> >>>> I'll probably have around 20 towers, all linked in a ring. I can load >>>> share >>>> across the ring as long as speeds never drop below 100megs. I'll want >>>> things to be automatically self healing if there is a loss of >>>> connectivity >>>> in any direction. >>>> >>>> What would you guys use/suggest? >>>> >>>> I'd love to go licensed (but no 6 gig due to antenna sizes) but >>>> unlicensed >>>> may be OK due to the failover capabilities. >>>> >>>> We have to worry about snow, fog and, worst of all, dust storms. >>>> >>>> What gear would you use? How would you set this up? >>>> >>>> I'm in the pricing stage so off list quotes etc. are welcome. Pall park >>>> numbers are fine at this time, as long as they tend to run high vs. low, >>>> I'd >>>> rather over estimate the costs. >>>> >>>> thanks, >>>> marlon >>>> >>>> >>>> >>>> ------------------------------------------------------------------------- >>>> >> ------- >> >>>> WISPA Wants You! 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