Many factors affect the radio transmission range: * A external matched antenna (e.g. whip) can significantly increase the transmission range (5-10 times longer than the on-board antenna).
* Open space is much better than a place with obstruction. * Placing motes with a height above ground will be better than putting them on the groud. * The on-board antenna is much more sensitive to the orientation of motes than the whip antenna. Placing two motes with their antennas edge to edge seems having the best result. * ... To my knowledge, the transmission range measured by Xbow is using a matched whip antenna in an outdoor open space. But I don't know other details, like height... -Wei On Mon, 14 Oct 2002, Zhigang Chen wrote: > Hey, folks > > According to > http://www.xbow.com/Products/Product_pdf_files/MICA%20data%20sheet.pdf (I > suppose that's thr right datasheet), the radio range is 200Ft(approx 61m). > > But my experiment shows much smaller range. Does anyone have related info? > > Thanks > > zhigang > > _______________________________________________ > Tinyos-users mailing list > [EMAIL PROTECTED] > http://mail.Millennium.Berkeley.EDU/mailman/listinfo/tinyos-users > _______________________________________________ Tinyos-users mailing list [EMAIL PROTECTED] http://mail.Millennium.Berkeley.EDU/mailman/listinfo/tinyos-users
