Input length is 6 inches
For 2nd harmonic, RPM range is from 19580 to 23760 with a pulse strength of 10 percent
For 3rd harmonic, RPM range is from 14712 to 16813 with a pulse strength of 7 percent
For 4th harmonic, RPM range is from 11470 to 12827 with a pulse strength of 4 percent