Most modern command/control systems are what is called 'frequency agile' https://en.wikipedia.org/wiki/Frequency_agility#:~:text=Frequency%20agility%20is%20the%

Most modern command/control systems are what is called 'frequency agile' https://en.wikipedia.org/wiki/Frequency_agility#:~:text=Frequency%20agility%20is%20the%20ability,broadcaster%20through%20radio%20direction%20finding https://en.wikipedia.org/wiki/Frequency_agility#:~:text=Freq.... and so a C&C system operates cross a wide band, and each system has a series of one time tables that says 'next hop' and the transmit and receive communications - or it random hops, with each one telling 'next'. Small drones can not carry the computational power to do this. Often the higher power base does all this and tells the drone/missile 'next' Frequency agility, coupled with directional agility(phased array) make it harder. Drone systems usually depend on higher power frequency hopping to saturate a range of frequencies and hope for the duration of the desensitising effect where the lower power and computational power of the drone to insert ambiguity into the bidirectional C&C signals and hope the drone settles down or goes home. It is complex, but as the drone get further away from the C&C it becomes easier to disrupt. A drone can fly in a cruise mode and when it detected interference - often with sync bars on the screen, instruct the drone to switch into a less jammable frequency (but uses more battery power- the scarce resource in a drone) as it gets closer to the target where more jamming power is expended. I expect low power ARM systems will help in this.