There are ready-made systems based on many frequencies as diverse as like 433Mhz, 868Mhz, 915Mhz, 1.2GHz and more besides the 2.4-5.8Ghz range this device attacks. Also, if I am dropping a bomb, I'll just program an autopilot to do that independently from external command, thing that can be easily done with many kinds of cheap controllers so, if you are delivering the payload with a DJI Phantom for instance, yeah, should work but that's it. IMHO they should try to disable/jam the GPS but even that would not be enough if the attacker knows how to implement dead reckoning. Won't have the same precision but in this case it won't matter much I guess.