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COILS AND SLIDERS
Crystal sets are still for the most part
fitted with tuning coils employing a slider
to vary the Inductance. If the slider is
connected to the aerial there is a leakage
by capacity through- the hand to earth. It
is advisable to connect the slider to earth,
otherwise every time the hand is brought
near the ? inductance the tuning will be al
tered.
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