In this chapter we diverge from the IBOC protocol stack as it is described in the NRSC-5 standard, delving into a discussion of the end points of the IBOC system: transmission system inputs at the starting end, and receivers at the destination. Chapters 3 through 11 addressed the IBOC protocol stack through the NRSC-5 standards documents themselves. Chapters 12 and 13 touched on how the IBOC waveform—the physical layer of the model—must be treated to radiate over the air properly. This chapter looks first at the IBOC broadcast facility (we'll call it Transmission), then at the IBOC receiver (Reception).