Hi David, > Without suggesting I wade through Part 15 FCC spec, can anyone advise me of > what unlicensed bands (under 1GHz) are available in the US ... For Wireless networking info the TAPR Spread Spectrum group can be very helpful at http://www.tapr.org/tapr/html/ssf.html Or you could do a search on LOWFER and read up on the folks who use the "Part 15" bands for experimenting..... info at http://www.lwca.org/part15/whatisit.htm The actual text of P15 is at http://www.qsl.net/kd6pag/localcopy/Part15.html#15.23 What band/application do you have in mind ? ............... Zim -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics