Tesla coil is very strong radio transmitter, and 1.7MHz is not free to use. It is above MW broadcast band and bellow amateur 160m band, in the area used by various coast guards which won’t be happy.

Explore the power of wireless energy as you build your own ‘baby Tesla coil’ (or Slayer Exciter) using Lego Technic! This experiment may not be a traditional spark-gap Tesla coil, but it demonstrates ...

That last theory – using a small EMP device to unlock a car’s door – got the attention of someone who builds mini EMP devices and has used them to get credits on slot machines. He emailed ...