4 ms·

I'm aware that GCHQ has a geolocation project for pagers, specifically, so... yeah.

• doctorshady 12y ago
  How would that be possible? The communication protocol is entirely one way. Even if it weren't, most paging sites are just a single, relatively high wattage transmitter, unlike cell services.
  • AlyssaRowan 12y ago
    Specific details are hard to come by, I have no RF expertise myself, and I have no idea how deployed, operational or effective such a project may be, but it has definitely been an area of interest. A source vaguely intimated it might have something to do with retro-reflection from receivers' local oscillators when illuminated by much higher-strength signals than designed for. They mentioned equipment provided by GCHQ to the Security Service (MI5) for operational triangulation of short-wave radio receivers in the 1980s-1990s (I can see why that might have been relevant to their interests then...) and/or pagers in the 1990s-early 2000s. Does that help?
    • doctorshady 12y ago
      I'm afraid I'm not much of an RF person either, but that's interesting.