Disable wireless radios

Can someone tell me how to disable the wireless radios on a WNDR4300 router?  The information I've been able to find says to uncheck the "enable wireless radio" button for both frequencies but I can't find that setting.  Under Advanced>Wireless>Wireless Setup there are check boxes for "Enable SSID Broadcast", but not "Enable wireless radio".  Does disabling the SSID broadcast turn off the radio?  Thanks.