Tim Pozar writes: > On Tue, Jul 16, 2002 at 09:28:51AM -0500, John Foust wrote: > > But I'm guessing the CPE equipment in this case is closer to $800 > > than $200, and it's still not a firewall. Even if this city wasn't > > charging for net access, selling $750 CPEs to citizens still smacks > > of giving more to the "haves" than the "have nots". > > Right. They will have to subsidize the hardware as well as the > bandwidth.
Why? People manage to purchase a car. Those who want one manage to purchase a computer. Why would someone not be able to afford $800 for CPE? It's cheaper than a lawn tractor. > > Where did you see hints of mesh architecture? The "User Manual" and > > "Online Demo" links don't work for me. I filled out an info request > > last week and have received nothing so far. > > Not sure where Russell did. I don't belive they use one. I didn't see any mention of backhaul from the access points themselves. Okay, so if the access points don't need a backhaul, they gotta retransmit from other access points, right? > > Will 5.2-7 Ghz punch through neighborhood trees better than 2.4 Ghz? > > Nope. Freespace loss is also 7 dB greater but the modulation scheme > will be better than DSSS or OFDM to interference. It may not works > as well with multipath as OFDM. Yup (in the sense that Tim is correct). That's why you really really gotta have a mesh architecture. In my town, from an arbitrary house you can see maybe the two or three neighbor's houses across the street. Going up doesn't help you because the trees are taller than the houses. For wireless to work in my community, you need to have what amount to lots of repeaters just to get the signal to a wired point. -- -russ nelson http://russnelson.com | New Internet Acronym: Crynwr sells support for free software | PGPok | 521 Pleasant Valley Rd. | +1 315 268 1925 voice | IANAE Potsdam, NY 13676-3213 | +1 315 268 9201 FAX | I Am Not An Economist -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
