Input length is 7 inches
For 2nd harmonic, RPM range is from 16783 to 20366 with a pulse strength of 10 percent
For 3rd harmonic, RPM range is from 12610 to 14411 with a pulse strength of 7 percent
For 4th harmonic, RPM range is from 9831 to 10994 with a pulse strength of 4 percent