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Isn't that the rub here? You suggest some brand is best because of accuracy. 7.83xxxxx or whatever.
Well, if the 'target' frequency varies so much than WHY bother with such an accurate oscillator?
It would make more sense to have it adjustible to EACH user and for how each persons frequency varies over time, be that hours, days. or a lifetime.
Placement of the device? Sure. Getting that right is worth experiment. And may take a little time.
You are such a condescending schmuck it is amazing. You posit 'questions' to which only you in your benificince have answers than get on the ole high horse when answers are not forthcoming. I'll bet when you worked for NASA that you were in charge of O-Rings.
UPON reflection, I'll contend that repeatability is more important than sheer 'accuracy' to a frequency of unknown value.
If I hit the 'sweet spot' by whatever means in adjusting the frequency, I'd sure like to find it again next time I turned the device ON.
Too much is never enough
Edits: 05/24/15Follow Ups:
It's not each person's frequency. The reason some decides have a tuning knob is mist likely because they aren't accurate so you need to fine tune them to 7.83. Unlike Alpha frequencies that ARE produced by the brain. The entire theory of why the Schumann Frequency is important from an evolutionary point of view and why it affects the sound and vision is based in the idea that the frequency has always been about the same, I.e. 7.83 Hz. That's why it has not changed at all since Schumann discovered it in 1952. We always responded to the same frequency. Is it a "pilot wave," something we need to survive. Who the hell knows?
In my reading 'reviews' of such devices, it is clear that response varies from little to lots.
I'm not going to speculate about WHY you'd want some variability, but I think it isn't a bad idea. But for me? If I had the means, I'd replace the potentiometer with a stepped 1% resistor ladder of custom values so I could TUNE to several frequencies and go back to them with good repeatability.
One company offers to 'mark 7.83hz.' on the tuning dial for a slight additional charge!
My Meter has a frequency input which I may check somehow. Perhaps a tone CD and check at my speaker inputs? I have no idea and dont want to smoke the meter since I DO use the Type-K thermocouple input as a data point for my BBQ Grill.
Too much is never enough
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