[aft_72005]

Originally Posted by J_Player

Hi Aft,
If we were using MRI methods to determine if a particular substance is present, then the substance is placed in a very high strength uniform magnetic field which will produce a sharp center frequency where a pure substance will resonate. In this condition, it makes sense to adjust your oscillator to a fairly precise frequency. But when the same substance is placed in the earth magnetic field near the ground or under the ground, the field is 350 times weaker and not very uniform. In this condition, the center frequency for resonating is not a sharp narrow band. The center resonant frequency quickly becomes a wider band as we reduce the magnetic field and allow the non-uniform variations in field that we find near the ground. By the time we reach the earth field strength, the resonant frequency is lost in the noise. In the uneven earth field, the sample substance is resonating at many frequencies depending on the various magnetic field strengths that pass through the sample from anomalies in the earth field. You no longer have any use for a precision oscillator because there is no longer a precise single resonant frequency for the buried sample. Use any frequency you like, and you will get the same signal of nothing coming back from the sample. The wide frequency band and the weak response is so bad that we can only see noise, not even a hint of a resonant frequency.

Take a look a the video which shows what happens to a sample when you are looking for the NMR frequency and you remove the sample from the high strength magnetic field: http://www.youtube.com/watch?v=MPXbD..._order&list=UL

You can see the difference... it no longer matters what you set the oscillator frequency for in the earth field because the resonant response has disappeared. The sample is no longer close enough to respond to the resonator. And if it was, you would find a very wide band shifted frequency which overlaps the noise. The high strength and uniform magnetic field was needed to make the resonant response visible above the background noise.

See measured NMR response below...
Does this give you some idea of why your trick of the mind theory seems to be a more likely explanation for why MFD users report success?

Hi J_Player
You said exactly very well . yes , for some reason we cannot, find target by LRODS base
On NMR .
But I pointed to the subject here , the company in my country produced LRODS with
Oscillator at far past , unfortunately I couldn’t work rally with it . I saw and study only user manual .
Oscillator out put voltage was very high and apply to ground , from 12 volt / hi amperage battery . the variable electronic oscillator box with battery weight was 7 KG.
2 LROD connect to small box as named in manual “ receiver” . There are some switchs
On receiver box to select metal type . if person when with LRODS while walk , if rods contact with together , produced big electrical shock for user !!!!!!!!!.
Many users of this system said found items with successfully . for a longer time didn’t produced this system . this is interesting for me “ is high voltage oscillation is affected really visible long buried metals underground??”
Please “ what is your opinion?”
Best regards.