This Forum Beta is ONLY for registered owners of D-Link products in the USA for which we have created boards at this time.
More dBi (amplification by using beefed up antenna's) is not a cure for penetrating more walls. When amplifying the signal you also amplify the noise... The N capability already improves the reach of the signal, so it will not give you a better quality.Try to look for a good, centrally located place to put your router. When you are US based you can try the ANT24-0230 antenna which allows you to put the antenna in a better place (max 1.5 m away from the router).