This link my help clear things up for you.

[link=http://www.hooked-on-rc-airplanes.com/spread-spectrum.html]Spread Spectrum Radios[/link]

The main thing to remember is DSM is for Park Flyers only, which is what DX6 uses.

DSM2 is designed for larger aircraft such as glow powered planes or similar size electric planes. DX6i uses DSM2.


Hope this helps,