These cheaper sets dont give any information on how they actually work. COnsidering both Spektrums and Futaba's methods are patented, and the extreamly cheap and basic price of this TX set i wouldnt be too quick to jumo on and say theyre just as good and safe because they say 2.4ghz .
Lots of other 2.4ghz equiptment suffers interfeirence.
I used a planet 5 set at RR Portsmouth along with many spectrum and other 2.4ghz systems operating and id just like to say the fail safes still worked ok and there was no interference at all (that i noticed).