Conversion of a Grid-Dip Meter into a Variable Frequency NMR Spectrometer

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Abstract
A variable-frequency NMR spectrometer, constructed from a commercial grid dip meter, is described. The spectrometer is exceedingly simple to construct. It may be operated in either the marginal or the super-regenerative mode. Although applications to magnetically ordered materials are stressed, the spectrometer can be used to detect nuclear magnetic and nuclear quadrupole resonances in nonmagnetic substances as well.