In AirPort Utility, you can disable a base station offering WiFi service.
-
Launch Applications > Utilities > AirPort Utility.
-
Select your base station and click the Edit button.
-
Enter the base station’s administrative password, if prompted.
-
Click the Wireless tab.
-
From the Network Mode pop-up menu, select Off.
-
Click Update, and the base station will restart and load the new settings.