----- Original Message ----- From: "Brendan Moran" | >Somehow I doubt a device capable of covering 40 miles can be used | > without a | >license of some sort. TTYL | | I went and looked it up. I do not believe that it requires a license. The | 900MHz band is an unlicensed band, and the specified output on these | devices is 100mW. I bet your cordless phone is higher power than | that. The receive sensitivity is -116dBm on the 900MHz model | | The website is www.maxstream.net I use the 9XStream module. Works as advertised. I can get 7 miles easily with my 1/2 wave dipole antenna, but antenna alignment is critical at the longer ranges. With a pair of super high gain yagi's, I'll bet you could easily get 40+ miles. Of course, it depends on the environment. I use mine in a sailplane transmitting to a ground station, so LOS is easy, and there are no obstructions (buildings, powerlines, etc. to break up the signal. - Robert -- 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