So what has this to do with this other guys claims?
Frequency generators are nothing new, and have been around for a long time. You can get a good one fairly cheap at radio shack in any range you want. You can even build one yourself if you've a mind to. There are all kinds of free schematics on the internet available for those who like to dabble with electronics.
Try to put the other guys claims out of your mind and look at the research. This has already received FDA approval after clinical trials I and II, not an easy accomplishment.