Hi Grace Which section you use, 15.247 or 15.249, will depend on the output power or radiated field strength of the fundamental frequency.
Best regards Tom Sent from my iPhone On Aug 24, 2011, at 11:35 AM, Grace Lin <graceli...@gmail.com> wrote: Dear Members, Do all regulatory requirements for spread spectrum devices apply to one channel direct sequence spread spectrum device (digital modulation system, DTS)? For example, for a 802.15.4 Zigbee device, if the device is set to a particular channel (not many channels), does FCC 15.247 apply? Or, should FCC 15.249 apply? Thank you very much for your time and look forward to your comments. Best regards, Grace Lin - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to < <mailto:emc-p...@ieee.org> emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at <http://product-compliance.oc.ieee.org/> http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: <http://www.ieee-pses.org/> http://www.ieee-pses.org/ Instructions: <http://listserv.ieee.org/request/user-guide.html> http://listserv.ieee.org/request/user-guide.html List rules: <http://www.ieee-pses.org/listrules.html> http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas < <mailto:emcp...@radiusnorth.net> emcp...@radiusnorth.net> Mike Cantwell < <mailto:mcantw...@ieee.org> mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher < <mailto:j.bac...@ieee.org> j.bac...@ieee.org> David Heald < <mailto:dhe...@gmail.com> dhe...@gmail.com> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com>