Many many years ago I was a specialist in satellites for a major European broadcasting company. We had a problem with couriers who used radar speed trap jamming

Many many years ago I was a specialist in satellites for a major European broadcasting company. We had a problem with couriers who used radar speed trap jamming devices. They had really noisy oscillators which leaked huge quantities of out of band noise into the dished which were located near the courier drop off point. We initially used an expensive spectrum analyser attached to a spare LNB (pointed at the parking area) but that needed you to notice the noise. So I used a USB enabled RF power meter interfaced to Excel (so sue me, it was a rush job and we weren't equipped for development). A script ran which fetched values, when there was a spike in received power it played an alarm and flashed the screen. The next step was to ask security to hold anyone in the carpark while a large angry engineer went to give the courier a piece of his mind. It worked, courier companies were informed, people were shouted at and I believe it stopped. There are probably better ways of doing this, but it was effective and built from spare parts.