A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. In one embodiment, the carrier includes a metal layer and a plurality of bumps formed in the metal layer. Further, the invention relates to the combined production of detergents or detergent hydrocarbons and fuels from Fischer-Tropsch hydrocarbonaceous reaction product. The capacitor has first and second capacitor electrodes and a dielectric layer.