A system and method of correlating book leveling criteria to label leveled reading books is disclosed. The unit includes a combustion chamber with a protective chamber downstream of the combustion chamber. These impulses may be split into odd and even channels, each at half the original data rate, and transmitted to a plurality of Walsh filters configured to have an impulse response corresponding to one of a plurality of orthogonal MSK waveforms. A plurality of the pipe sections can be connected together end to end using circumferential FSW seams to form a pipe.