A few points the idea of these working on the electromagnetic spectrum will need to contend with. In no particular order:
The radio frequency at a wavelength on the order of 10mm is around 30GHz. While harmonics at a few multiples of 20kHz exist, and a good case can be made for their influence on lower (audible) (in air) frequencies, thirty billion seems a bit of a stretch.
Then too we have the problem of knowing they work equally as well both directly on electronics as well as on the outside case of components. They also work on a tone arm- and not on the cartridge which would be electrical but on the tone arm rest far from any electromagnetic field.
A lot of this is conjecture. But one thing we know for certain, electromagnetic fields attenuate according to the inverse square law. Another thing we can know for certain, we can't have it both ways. Either its electromagnetic, therefore attenuates with distance, or its not. It does not attenuate with distance. Therefore its not electromagnetic.
Also if its electromagnetic then why would it be so necessary that they be securely fastened that SR includes both white tack and adhesive? Electromagnetic radiation goes right through clothing. They would work even in your pocket. (Or in the box!) Also in order to work electromagnetically they would need to be, you know, magnetic. Ferrous. At least a little. But they're not. Because then the last place you would ever want to use one is stuck right next to the delicate electromagnetic field of the phono cartridge. Which is exactly where they tell you to stick them!
One way to figure things out, rule out everything it cannot be, it must be what you're left with. Electromagnetic dog don't hunt.
The radio frequency at a wavelength on the order of 10mm is around 30GHz. While harmonics at a few multiples of 20kHz exist, and a good case can be made for their influence on lower (audible) (in air) frequencies, thirty billion seems a bit of a stretch.
Then too we have the problem of knowing they work equally as well both directly on electronics as well as on the outside case of components. They also work on a tone arm- and not on the cartridge which would be electrical but on the tone arm rest far from any electromagnetic field.
A lot of this is conjecture. But one thing we know for certain, electromagnetic fields attenuate according to the inverse square law. Another thing we can know for certain, we can't have it both ways. Either its electromagnetic, therefore attenuates with distance, or its not. It does not attenuate with distance. Therefore its not electromagnetic.
Also if its electromagnetic then why would it be so necessary that they be securely fastened that SR includes both white tack and adhesive? Electromagnetic radiation goes right through clothing. They would work even in your pocket. (Or in the box!) Also in order to work electromagnetically they would need to be, you know, magnetic. Ferrous. At least a little. But they're not. Because then the last place you would ever want to use one is stuck right next to the delicate electromagnetic field of the phono cartridge. Which is exactly where they tell you to stick them!
One way to figure things out, rule out everything it cannot be, it must be what you're left with. Electromagnetic dog don't hunt.