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[* black] Looking closely it appears that there is another difference from the Apple TV 2nd Generation, two antennae!
[* black] While it is unclear where the two antennae terminate, we suspect Apple added the second antenna to address some complaints range and signal strength in the previous model.
+[* black] According to the Broadcom, the [link|http://www.broadcom.com/products/Wireless-LAN/802.11-Wireless-LAN-Solutions/BCM4330|BCM4330] features a single-band 2.4 GHz 802.11 b/g/n (single shared 2.4 GHz antenna for Bluetooth and WLAN) or a dual-band 2.4 GHz and 5Ghz 802.11 a/b/g/n antenna.
+ [* black] By further examining the antenna traces on the board, it seems highly likely that the BCM4330 on the Apple TV 3rd Generation features a dual-band antenna.