Large Induction Coil for ULF monitoring--instructions

[shy]

Not sure but I thought 30 might be interested in this (& maybe someone else?)
Hat tip to Don in Hollister of Szygy for the following:

Large Induction Coil for ULF monitoring
by Matteo Bruna

Large Induction Coils, probably the hardest and more expensive way for "home researchers" to study ULF signals. But this antennas are also the only way to get great performances in magnetic field measurement with very poor technology. So let see how to build an induction coil and what can be done to optimize cost and material's efficiency by applying coil's theory.

found @   http://www.vlf.it/matteobruna/ULF_Induction-Coil.htm

[999]

Interesting construction project, but it will need to be modified for use in the U.S.A.
The cutoff frequency of the filter as designed is 100hz, which is 2 times the power line frequency in Europe.
Our power line frequency is 60hz, so the filter would have to be redesigned to cut off at 120hz.

Man, thats a lot of wire!