I willing to try really hard on working with Very Low Frequency waves to get a signal through the earth a few Km.
How can I go about putting a signal at the frequency (probably near 10 kilohertz) into the ground?
I have been searching for schematics everywhere, but just nothing shows up.
I know it is possible, I have seen some amateur radio really low frequency contacts through the earth.
I know it is slow-speed CW, but that is still worth the joy of experimenting.
Can I use ground rods instead of a HUGE antenna?