A method of writing to magnetic random access memory devices is provided. The method includes receiving a video signal stream, identifying a plurality of individual segments within the video signal stream and encoding, off-line, recurring ones of the individual segments that recur with at least a first frequency to produce encoded recurring segments. In addition, an array of pucks is at least generally congruent with the array of holes and disposed within respective ones of the holes to define annular gas passages for gas flow through the front plate into the chamber, each of the annular gas passages being non-aligned with the orifice. The second radio and the antenna collect non-participatory WAP data. The fitting chamber is disposed inside the outer circumference projection on a cross-sectional plane projected perpendicular to the axis. A method to digitally program the output impedance of a preamp write driver based on realistic operating data is also discussed.