2.4G控一定唔會jam

I experienced JAM on 2.4Ghz!!  

It was the original Spektrum KO module and SR3000 Spektrum receiver!!  Surrounded with 4PK, and my car just won't move, out of control, or 1-2 sec delay.

Just hope KO will release some better and reliable 2.4G module + receiver.  Or Spektrum come up with some Pro2 version.