My proposal for a limited LRL system

[Seden]

In theory if you were to input a pulsed signal into the earth using ground rods spaced several hundred meters apart,you should be able to receive a signal from a piece of metal in between the rods say for instance a hundred meters out.
The receiver would have to have a receiver built in it to receive the sync. pulse from the transmitter so it's turned off during the pulse on time.
In this case a faraday shielded loop would do nicely to aid the receiver in rejecting outside noise (powerlines would pose a problem of course and a 60hz or 50 hz comb notch filter would have to be employed). Here in the US I have experimented with a 60 hz comb filter and took a portable AM Broadcast Band receiver out in my backyard and was underneath a 16,000 volt powerline and with the comb notch filter was able to completely notch out the powerline harmonics to where I could pick up distant stations, so it can be done quite easily.

The problem I see in general with trying to receive the above pulsed transmission if you were to extend the rods say a kilometer out, would be the absorbtion by the earth as the signal has to travel horizontally to reach the receiver. For the receiver to be in an aircraft it works very well and has been used for decades in Geophysical exploration. For that matter Anthony Barringer has been using a Pulsed Induction system successfully in Aircraft since the early 1960's known as the "Input system" so we know that the signal has no problem traveling vertically since there is little attenuation in the air other than what's known in Radio Communications for a radio wave.

I would ask that this thread be limited to only constructive Technical responses in electronics theory. I am tossing out this idea so let's share electronics knowledge and see the good or bad about such a system and maybe how it could work OR why it can't.

Randy