Tuesday, June 28, 2011

AirPort 2011: Apple multiplies the power of Wi-Fi

At a time when the waves  are controversial, as our record shows, Apple "innovated" the new generation of AirPort Extreme cases increases the transmit power in Wi-Fi In fact, Apple recently changed the boundaries and if the specifications appear identical, there is a big difference in power.

The FCC, which validates the products to be sold on American soil, indicates that 2.4 GHz - the frequency band used by 802.11b, 802.11g and 802.11n - the power from 130 mW (in 11n) to 260 mW. In 11g, you go from 143 to 307 mW and 286 to 257 (decrease) in 11b. When working in the 5 GHz band, for a higher rate, going from 139 to 392 mW (11n/40 MHz), 164 to 337 mW (11n/20 MHz) and 202 to 322 MHz when using the highly confidential (in Europe) 11a.

As shown, the power increases greatly and scope should follow the same path. Still remember that in France, ARCEP limits the transmit power of 100 mW at 2.4 GHz and 200 mW or 1 W at 5 GHz, depending on the selected channel. The terminals, which allow you to choose the country where they will be used, a priori limit the power via the firmware to stay within legal limits, but it is obviously simple enough to override ...

Meanwhile, those sensitive to electromagnetic radiation should avoid this type of terminal ...

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