This is part one of my look at the Spektrum/JR 2.4GHz DSM2 radio system, as implemented in a JR DSX9.
Please visit the webpage at: for more information on a weakness that I observed when testing the radio.
As the video you are watching shows, DSM2 is normally very resistant to interference, by virtue of its two operating channels -- even a powerful video transmitter can't knock it out at close range, so long as one of the operating channels is outside the inteference zone.
Please also watch part two of this review.
If you're a DSM2 user, feel free to share your comments on this review and my observations.