James and Iliana wrote: > > Before I make a fool out of myself ( and spend money that I don't have ) > could someone just confirm that they are not smoke and mirrors ?? The "they" being Magic Sinewaves... The only way you'll make a fool out of yourself is by claiming that this stuff is Magic. It's not. I've studied various pulse streams: 12,15,24,36 and was able to demonstrate the harmonic suppression claimed by Lancaster. I was unable to come up with a generic formula. However, I have made several observations and have written a program in MATLAB to calculate the harmonic content of a given pulse stream. I can re-post the observations and send a copy of the MATLAB program to those interested. Scott