A loading coil is an induction device placed on a local loop
longer than 18,000 feet that carries analog
signals. The device compensates for wire capacitance and boosts the frequencies carrying the voice
information. Loading coils cause distortion at the higher frequencies used to carry digital
information and so are not used on these local loops.
Contributor(s): Lisa Lancett-Boyd
This was last updated in April 2005
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