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#1
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I made an emi probe out of a ferrite AM antenna rod, which I carefully mated
to a paintbrush handle with an encapsulation of epoxy. A connection was made to the original Litz winding. I hooked it up to a Tektronix 7904 oscilloscope with a 7A22 preamp, which has sensitivity to 10 microvolts/centimeter. The probe is directionally sensitive to fluourescent lights several feet away, with the display exhibiting a plethora of HF hash superimposed on 60Hz. If the Shakti stone does have a physical effect, as claimed, this probe should be able to exhibit it. If anyone would like to loan me a Shakti stone, I would perform this test: with a fluorescent light several feet away, examine the space around the Stone to determine if there is any reduction in field strength. I may also be able to route the output of the 7A22 to a Lecroy 9361, digitize it, and perform spectral analysis. Is anybody interested in lending me a Stone for this purpose, or is the general preference to leave this as the Kidney Stone of audio? Witnesses to the examination are welcome. |
#2
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On Wed, 14 Sep 2005 14:01:36 -0400, "Robert Morein"
wrote: I made an emi probe out of a ferrite AM antenna rod, which I carefully mated to a paintbrush handle with an encapsulation of epoxy. A connection was made to the original Litz winding. I hooked it up to a Tektronix 7904 oscilloscope with a 7A22 preamp, which has sensitivity to 10 microvolts/centimeter. The probe is directionally sensitive to fluourescent lights several feet away, with the display exhibiting a plethora of HF hash superimposed on 60Hz. If the Shakti stone does have a physical effect, as claimed, this probe should be able to exhibit it. If anyone would like to loan me a Shakti stone, I would perform this test: with a fluorescent light several feet away, examine the space around the Stone to determine if there is any reduction in field strength. I may also be able to route the output of the 7A22 to a Lecroy 9361, digitize it, and perform spectral analysis. Is anybody interested in lending me a Stone for this purpose, or is the general preference to leave this as the Kidney Stone of audio? Buy your own housebrick, pal. Witnesses to the examination are welcome. |
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