I think in this type of business it is take what you can get as far as technology. A fuel pump PCB could be bugged one way, while a core flight control PCB cou

I think in this type of business it is take what you can get as far as technology. A fuel pump PCB could be bugged one way, while a core flight control PCB could be bugged another. The bugs could also carry their own sensors. A simple pressure sensor could report altitude, and an accelerometer/compass could report motion. Those could be placed on the output stage of one of dozens of antenna or radar hardware. Even modulating a light bulb or LED slightly can transmit data that can be seen miles away.