Am well satisfied, but only supports less 5GHz channels ..

Am well satisfied with the router, constantly got the feasible for my laptop full 300MBit / net and reach brutte about 100-120MBit. 2.4GHz (b / g / n) + 5GHz (n) both run parallel in the 20/40-MHz mode to provide the right to all clients.

What struck me when tuning:
- You can only adjust the following 5GHz channels (ETSI): 36, 40, 44, 48

As long as there is hardly 5GHz radio operators around me, that's okay for me .. a reason / sense I can, however, do not realize at least the channels to 64 should be legally allowed?
Therefore a star deduction until the appropriate reason is found.