An electromagnetic bandgap structure and a printed circuit board having the electromagnetic bandgap that intercepts the transfer of a signal ranging a frequency band are disclosed. The Flexible Natural Gas Storage Facility can access different sources of natural gas. The apparatus includes an engaging-area changing device operable to change the engaging area of the lock-up clutch, on the basis of a turbocharging pressure established by the turbocharger, andor slip-control-area changing means for changing the slip control area, on the basis of the turbocharging pressure. The remotely located computing device can create a second wireless network to facilitate connecting the doorbell to the first wireless network.