Method and apparatus for retrieving the channel frequency response H, the noise N, measured at initialization and the signal to noise ratio SNR measured at show time on a per bin basis, in the upstream or downstream direction. The top emission pixels and the bottom emission pixels are formed on the substrate to alternate with each other on a pixel basis, on a scan line basis, or a data line basis. Once a buying community is established, behaviors of customers within that buying community are discerned. WLAN devices include a baseband processor interface and a first radio for receiving the digital data and for transmitting RF signals in first and second frequency bands of a plurality of frequency bands, and for producing corresponding digital data to the baseband processor interface. Each jaw member is designed in such a manner that, when the hand tool’s handles are closed, each jaw member independently engages one or more of the locknut protrusions.