I find the kick

[rtl8186]

Use acoustic wire,and oscillograph to find "kick".
Search for microphonic effect in wire.

It is surprising, but it so..

[EMdevices]

you're on the right track rtl8186,  it's all about the real "kick" which is MOTION not backEMF, but they can be related.   I experienced the microphonic effect with a magnetic sensor I built,  if I moved anything magnetic near by (sometimes even a non magnetic conductor), even though it wasn't magnetized I could detect it, or obviously if I moved the sensor it picked up that motion.   The folks that make the super sensitive Schumann receivers try to avoid this by burying the coils in the ground or placed such that they won't move with vibrations.

This principle of the acoustic resonance is what gives the high Q of the tank circuit. The transducer action needs to be or could be done with a magnet, much like a speaker.  Then you need a source of magnetic frequency like near power lines (steven's house was near power lines), and you tune it, an voila !

You can tune the resonant frequency of your wires by cutting them down until they resonate strongly from a magnetic frequency at your location, if you have any.

EM

P.S.   Look up guitar induction pickup coils, same principle but it has it's own magnet to make a stronger field for interaction between acoustic vibrations and magnetic field, the tuning is key to hit the right frequency, and receive and convert energy from the "earths" magnetic field.   If you have an electric guitar,  connect a conducting wire from one end of a string to the other end of the same string, to form a large loop, and when that guitar string is tuned to the right magnetic frequency present at your location (or go close to some power lines or pole), it will ring and oscillate.   There's obviously better lower damped methods of acoustic vibrations, like the magnetostricition phenomena which can have Q's on the order of 100 000, but a quitar string is not bad.   You hear these vibration noises on POWER LINES, hint hint!

Let's ROCK !   

[EMdevices]

Check out this link on guitar pickup coils,  nice pictures !

http://entertainment.howstuffworks.com/electric-guitar1.htm

[rtl8186]

Thank you very much!

[rtl8186]

"Kick" in vacuum