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.

All it took was a mask, and a little treatment with a modified Tesla coil. Plastics tend to be hydrophobic, meaning their surface repels water. These plastics also tend to be non-receptive to ...