Now I could speculate (and I must emphasize that this *is* simply speculation) that what could be happening is related to the weakness I discovered in the DSM2 system (see:
JR/Spectrum's DSM2 not always so good).
Because I'm not active on the other forum sites around, I don't too many Spektrum users are aware of this potentially fatal flaw in the current implementation of the DSM2 system and perhaps now that we're seeing a huge increase in 2.4GHz activity, the effects of it are starting to surface more often than before.
If/when this kind of "single frequency" operation occurs with the DSM2 system, it becomes far more vulnerable to interfering signals, such that, at a busy flying field or one where there is strong external interference, the results could be otherwise unexplained lockouts and loss of control.
I note that I've had no feedback at all from Horizon, although they have contacted me in the past when I described the FASST system as a hybrid DSSS/FHSS system. They claimed it was purely FHSS, not DSSS (they were wrong BTW).
No doubt Horizon has seen the article, I wonder why they refuse to acknowledge the presence of this problem?
RCModelReviews.com, just the facts.