Just saw this curious zapper, and wanted to know if the cycling of frequencies is known to have any validity:
"MEGA ZAPPER (ZMEG)
It produces an 18 volt output which cycles between 26 and 33 kHz. The switching rate is 7.8 times per second, which is at what is known as the "Schumaan Frequency." This frequency is revitalising to our cells' DNA, and returns our body's vibrational rate to that of the planet."