The first three charts are with the Induction Coil Buried. The first and second resonance are visible but another signal is evident at 10hz. The coil was located at a site at least 2 miles from any source of 60hz.

The next two charts were at another location on a different day and the coil was above ground. There is a small amount of 60hz. mains interference even though once again the coil was far from any 60hz. source.

The next two charts are what I believe to be a Q-Burst. The first two charts are Bursts and the third is a FFT of a burst.