"Agents from the FCC used direction finding techniques to find that strong wideband emissions were coming out of a blue Toyota Highlander SUV driven by Humphreys."
This I find interesting and am curious what devices they had to obtain in order to accomplish this.
I used to work for a telco that, to this day, continues to have this very issue with _someone_ in a remote rural location. By the time the NOC can inform local law enforcement the jammer has left the area, seemingly impossible to track.
Tracking radio signals with two spectrum analyzers, two Yagi type directional antennas is pretty trivial. If you know the probable location set up two (or more for a faster fix) people with gps units and their hand held antennas. Tell them the frequency and they can read back their headings (you know their position from GPS). After about 3 minutes of this you have the transmitter location to a precision of less than 12" if it isn't moving.
I think this person gave themselves away by being extremely regular about their behavior. If he was causing disruption on the commute every day for two years then they had plenty of time to work through the bureaucracy of getting the equipment out there and tracking it down.
I could imagine how you could cross-reference data from the towers and start seeing a pattern. You might even be able to track it to a specific location over time. Seems totally doable with access to enough information.
It was a strong radiator (perhaps broadband) and that makes it easy to geo-locate. You can use distributed mobile sensors and TDOA to pinpoint the location.
This I find interesting and am curious what devices they had to obtain in order to accomplish this.
I used to work for a telco that, to this day, continues to have this very issue with _someone_ in a remote rural location. By the time the NOC can inform local law enforcement the jammer has left the area, seemingly impossible to track.