My Samsung Galaxy tab 2 (7.0) can't see 5ghz networks. Am I missing anything?
The spec sheet lists compatibility as "Wireless Internet WiFi 802.11 b/g/n, WiFi Direct". If it has a 5 Ghz radio, it should list a/b/g/n.
Despite this, there are plenty of discussions around the net about getting the Galaxy Tab to work on a 5 Ghz AP, so your problem may be something else.
Possible answer (untest)
[ More authorative later, I only bought my Galaxy Tab 2 (7.0) yesterday. ]
Tested with router 5MHz set to channel 36.
Still unable to connect.