Hulda Clark Zapper Schematic and parts list?

Freinds,

I recently became interested in the Hulda Clark zapper from her book "The cure for all Diseases" the circuit is very simple, and I am sure I can fabricate a few of these myself, as I have about 35 years of electronics experience under my belt.

But as this information is probably 20 years old and out of date, I was wondering if anyone has any changes or modifications or even specific frequencies that have shown up as being noteworthy or highly desirable for any new builds?

Thanks for your input!

Tillerman6