Greetings: Before reinventing the wheel and going for FCC Type compliance (about $10,000) I would investigatye off the shelf solutions with type acceptance. http://www.linxtechnologies.com/main.html Try this sight and see if they have what you need. Terry ----- Original Message ----- From: Spehro Pefhany To: Sent: Wednesday, July 04, 2001 3:56 AM Subject: [EE]: FCC Part 15 approval/band selection > Hi, > > A project requires a very low power, low bandwidth, short distance > (10~20m) RF link. > > The frequency is open, however minimizing the transmission power, > receiver power, he time to reception from power-up, and getting > consistent range in differing conditions (no strange behavior) are > important considerations. Minimum size is essential. > > 1) Any suggestions as to the frequency? I see there are possible > bands from almost DC to almost IR, with varying maximum field > strength levels etc. To minimize the size, I'm currently > thinking of something in the 400MHz range, which will allow > an etched PCB antenna to be used, and allow relatively > accurate and inexpensive SAW filters to be used. Comments? > > 2) Has anyone gone through the FCC approval process? Cost and time > estimates? The testing should be very straightforward for > a portable device, and FCC claims < 30 days for 90% of applications, > (the application includes a test report the manufacturer must > provide) but.. any firsthand knowledge? > > Best regards, > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- = > Spehro Pefhany --"it's the network..." "The Journey is the reward" > speff@interlog.com Info for manufacturers: http://www.trexon.com > Embedded software/hardware/analog Info for designers: http://www.speff.com > Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- = > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.