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Originally Posted by ZrByte
Cant see it affecting fcc rules anymore than fitting a standard wireless adapter into a destop PC but thanks for mentioning that.
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this is just a guess but it's probably to do with the antenna bit. basicaly the power output restrictions (in uk and in usa) are 'eirp' or emitted power - which basically means it is the effective output power of the card + the antenna. Plug a card into and antenna with too much gain and you end up over the eirp limit. Or to put it another way , it's not the power limit of the card alone that defines it's legality but the combination of the card and the antenna. That's prob why, technically, it should only be a qualifed engineer that installs the cards (as presumably they are able to claculate the total eirp and ensure that they are within the limits).
not that it really matters of course
