Em Qua, 2006-12-13 às 13:44 -0700, Stephen John Smoogen escreveu: > On 12/12/06, James Cameron <[EMAIL PROTECTED]> wrote:
> Another thing that I have found in the US Southwest, Indian Pueblos, > and northern Mexico region is the impact of chicken wire. Houses are > an adobe mixture built over sometimes concrete blocks or adobe bricks > with a chicken wire fencing to give the structures a lot of > "standing". This kind of construction looks to be similar to stuff I > have seen in documentaries for Central America, South America, parts > of Africa, and Pakistan. [Sorry I have not been able to leave the USA > so do not want to assume.] Here in Brazil, we don't use chicken wire on constructions, AFAIK. At 2,4GHz, wave size is 125 cm. So, even the 7 cm chicken wire can be a trouble, especially on humid environments, where the chicken wire may work as a Faraday shield. I suspect that this kind of construction may be interesting just at those humid environments. If the building have windows or doors larger than 1,25m x 1,25m it won't block completely the signals, but for sure will make harder for the net to work. Maybe, for those environments, a back to back antenna, between internal and external environment, might be a solution. I dunno if this kind of network construction would work on a wireless mesh environment, since it may introduce delays and echos, due to multipath propagation. It will also introduce a signal loss. Cheers, Mauro. _______________________________________________ Devel mailing list [email protected] http://mailman.laptop.org/mailman/listinfo/devel
