I know several people that swear by Trango Broadband equipment. They have 5.8 and 5.3 systems and claim several advantages over Canopy.
Brian > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Jim Aspinwall > Sent: Monday, July 14, 2003 6:06 PM > To: [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? > > -- > general wireless list, a bawug thing <http://www.bawug.org/> > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless > > -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
