A bearer document processing system includes preparation, verification, redeeming and depositing of the document. The first and second ends are rigidly connected to one another and are slidingly detachable from four sides of the assembly. The system additionally includes at least one equalizer that normalizes the energy levels of RF signals across the broad range of frequencies and at least one modulation device that adjusts the energy levels of the RF signals output by the equalizer. A data link such as a data cable coupled to the downhole processor conveys the temperature measurements to a surface interface.