Jim, If you want equipment based on 802.11a hardware that's FCC legal we got it. Unfortunately 5.2-5.3Ghz is limited by the FCC to 30dbm EIRP. Our longest production link in the US is 5.5 miles. In mexico we can do 30 miles. Our thoughtput is about 35mbps and at 5 mile 22mbps. The retail on the product start at $1198 per side. See more at www.airaya.com.
Rich Costa [EMAIL PROTECTED] 866-224-7292 > Message: 1 > Date: Mon, 14 Jul 2003 18:06:29 -0700 > To: [EMAIL PROTECTED] > From: Jim Aspinwall <[EMAIL PROTECTED]> > Subject: [BAWUG] Canopy or any 802.11a/5.8GHz Range > ? > > Doing some pencil-scratching on point-to-point > systems. > > Motorola's Canopy Backhaul 'system' claims "up to" > 35 mile range with > 'reflector' antennas. OK that's a 23-24dbi dish - > fine. Crunching numbers > and using a radio coverage program to model a 12 > mile path... > > 30dbm power out + 23 dbi antenna gain = 53 dbm ERP > > The coverage program tells me the 12 mile path has > -133 db path loss = -80 > db at the receive antenna. > > Add +23 dbi Rx antenna gain I've got -57db to the > receiver, whose specs > indicate -79 or -83 sensitivity depending on the > sheet you read. > > That leaves at most a 26 db fade margin/margin of > error for atmospherics, > weather, etc. That's NOT much at 5.8 GHz, > especially going from a 3700 > foot coastal range hilltop, pointing NNW down onto a > valley building top. > > Questions: > > 1. Has anyone used Canopy or equivalent 5.8GHz gear, > legal power, etc. for > point-to-point hops? > > 2. If so, at what ranges under what site conditions? > > 3. Has anyone got a preference for/experience with > licensed backhaul > (20-50-100Mbps) RF equipment? Recommendations? > > __________________________________ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
