...and - yes u are correct (as i have mentioned before) it is a ppm or fm tx.
And no - the sound wave is literally all over the place. Well i put the volume to nearly every volume possible (highest - lowest) and its no difference really. I didnt create my cable i bought it off RCHEAVEN which has apperently gone broke- what do you know about that???... & what would happen if i bought a usb cable for it
and finally, there has never been a good corrilation between the movements of the sound waves and my tx stick movements...