Inside the WM-2
The WM-2 has most of the circuitry on the one PC board and the kit is not difficult to build. OHR provides quality components and excellent instructions.
Take your time when constructing the two RF pickup coils and coax cable assemblies to ensure an accurate and balanced instrument when you are finished. The only test instrument you need is a digital voltmeter to perform the meter calibration.
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Updated November 29, 2003