I am presently researching on the performance of 'Flock
of Birds' which is manufactured by Ascension Tech Corp.
Flock of Birds is a magnetic orientation device.

Specifically on how performance is degraded by using a
metal testing device within the magnetic field. Also comments
on AC or DC Pulsed magentic transmitters would be helpful.

I understand that on metal devices, eddy currents may be produced
on the surface of the device and DC Pulsed may perform better.

Any comments would be greatly appreciated.

James Metzler
The Pennsylvania State University
Biomechanics Laboratory
39 Rec Bldg
University Park, Pa 16802

Office: 814-863-1648
Email: jlm55@psu.edu

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