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! Join today! >>> http://signup.wispa.org/ >>> ------------------------------------------------------------------------- > ------- >>> >>> WISPA Wireless List: [email protected] >>> >>> 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: [email protected] >> >> 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: [email protected] > > 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: [email protected] > > 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: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
