Bob Fitzgerald LRL Devices

[kaveh]

What do you think about the devices that Bob Fitzgerald made?
These devices try to create a signal line between the device and the intended target, which work based on frequency in the Hertz range for small dimensions, kilohertz for medium dimensions and MHz for large dimensions. The signal line that is created between the device and the target is followed by the seeker to reach the desired target.
Does anyone have practical experience with these devices and how well do they match what Bob Fitzgerald says?