6 X 6 Loop add on.

Totally separate 6 X 6 loop.

Second Loop makes a L shape.

 47000 PF Polypropylene caps across each loop for 10 kHz cf.

6 X 66 X 6 Antenna loops, spectrum at sound card input.

The mark of EMI before shielding.  

Same Antenna after shielding for E' field.