loading coil

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Related to Loading coils: telephone loading coil

loading coil

[′lōd·iŋ ‚kȯil]
(electromagnetism)
An iron-core coil connected into a telephone line or cable at regular intervals to lessen the effect of line capacitance and reduce distortion. Also known as Pupin coil; telephone loading coil.
A coil inserted in series with a radio antenna to increase its electrical length and thereby lower the resonant frequency.
References in periodicals archive ?
In those instances when loading coils are used, the coils would act as bandpass filters and eliminate most digital signals from the line as they passed through.
For example, all loading coils would have to be removed, and regenerative repeaters would have to be installed at various points along the lines.