How triangulation works is that it measures the direction of radio waves from two to three points to locate the radio signal. The benefit of using triangulation to trace a two way radio transmission is that it only needs to measure the radio transmitters to pinpoint a location.

Absolutely! It's an old technique called direction-finding. Ham radio operators sometimes do it for fun in what's called a “fox hunt” where they need to locate a hidden transmitter. Using directional antennas and signal strength equipment you can triangulate a signal with a simple handheld radio.

If you can receive the signal, you can triangulate it, even if that signal is being transmitted by a directional antenna system. The reason why that is possible is that directional antennas do not send out infinitely-narrow spots of radiation.

Are walkie talkies traceable? All radio signals are traceable. But a weak signal is harder to trace, because you need to get neareo the source to hear it. A moving signal is harder to trace.

Yes by a method called triangulation. You need certain equipment, a highly directional antenna, a receiver and a map. You point the antenna toward the signal and record the heading where the signal from the transmitter is the strongest.

The most efficient way to achieve this is through 24/7 spectrum monitoring using automated wideband interference detection equipment. One such solution is to use an RF receiver that triggers an alarm if unrecognized signals are detected.