>>2604547>We use handheld NLJDs in building search etc to look for devices buried in walls.Something like pic related? What was the effective range one that, a foot? You're not going to detect a GPS unit with one of these in the forest unless you hide it inside a tree stump along a trail and hope someone walks by.
>how they tracked EOKA guerillas in Cyprus in the 60s using an aircraft fitted with an early form of NLJD to locate radio sets when not transmitting.Gonna call bullshit on that, you try applying this principle to an aircraft-mounted unit and you'd A) have to blast out so much power it would cook the aircraft crew and B) get so many false positive signals as to make the actual detection of radios useless. They probably used a different method.
>Early AC-130A in Vietnam used Black Crow to detect unshielded sparkplug and ignition coils on trucks on the Trail.Not NLJD, that's just a sensitive passive receiver tuned to detect the pulses in EM radiation that occur when a spark plug generates a spark (something that a GPS unit doesn't do).
>t. Actual PhD in wireless comms systems 