Gerhard Fiedler connectionbrazil.com> writes: > > In general, world wide. > > That doesn't exist, as a regulation. It's specific for each country (or > commercial zone that have synced their regulations, like the EU). So you > have to study the regulations for each target market. Still there are oodles of devices that work anywhere. The ones I have in mind are the FM transmitters that connect iPods and the like to the car FM radio without a wire. This is really a small stereo transmitter with 1-2 meters of range. My easiest option for now is to buy one of these and build with it. > > I don't quite believe that someone needs a license for a 0.5uW radiator > > (the LO leakage from the average FM radio is several times that). > > It sounds as if you may confuse whether an operating license is required or > whether the device itself has to be (FCC) certified. At least in the USA, Thanks for posting that. It sounds like I'll have to make it work 'elsewhere' first and then deal with FCC if necessary. > AFAIK there is no intentional radiator that doesn't require an FCC > certification, no matter how low the radiation. (The key element here is > not the radiation power, it's the "intention".) Oh, yes. An engineering standards instiution in the premier technological nation on the planet defines engineering standards (minimum ERP for licensing) using legal terms that have no SI units. So, if I happen to built a Confabulophlogisticoenhancer that mainly consists of a large blue led that pulses slowly in the rhythm of music and psi wave enhanced bhagra beat but just so happens to be receivable with any FM receiver from about 2 meters distance then I should be home free, no ? At last according to radiation determined by 'intention'. Yes, I am a little sarcastic. Especially because the same institution (FCC) allows some horrible 'unintentional radiators' to pollute the radio spectrum at levels that are inconceivable for anything but jammers imho. thanks, Peter P. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist