If you buy a module legally from a reputable supplier in the USA, it will operate on the correct frequency and should conform to the correct power limits. i wouldn't be surprise if they do enforce it word by word. i have no idea how often they actually enforce it. it seems like they are very serious about these stuff. Thats not what it seems like from FCC documents and bulletins. i'm sure a commercial product maker wouldn't ask all these silly questions! Is there any conversion table where i can get the number? say if i have a 2db antenna then what would be the maximum allowed transmit power? i'm saying it because on the module spec it says the card is 10 milliwatts but from the table it seems like it should be few hundreds micro watts :~ Whatever is confined within the specified field strength, which depends on antenna gain. is that means 3 minutes of continuous transmission? If its just for your own experimentation, you may like to consider getting a Ham Radio license, this gives you more options of bands (though it kinda depends on what you are doing). There are great 2.4GHz modules that are very inexpensive, or you could look at Wifi (there are some interesting new inexpensive modules appearing for this band as well) I know you mentioned "below 1GHz" but why do you need to stay below ? I'm just curious about why your are concerned about regulation.Ĭhecking the FCC regs are not normally top of my list when experimenting with for example VirtualWire between two devices on 433Mhz.Īlso 433 and 315 are not the only available bands, Though I'm not sure about the US, I thought there was a 915MHz band. but at least no worry about any regulation! I understand such band might be too crowded or noisy to do anything serious. Also, is there any band (however tiny it is!) under 1Ghz frequency that is open to all in complete un-restrictive.
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