preselector

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preselector [¦prē·si′lek·tər]

(electricity)

Device in automatic switching which performs its selecting operation before seizing an idle trunk.

(electronics)

A tuned radio-frequency amplifier stage used ahead of the frequency converter in a superheterodyne receiver to increase the selectivity and sensitivity of the receiver.

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intermodulation interference
radio-frequency cavity preselector

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Prescott, William H
Prescott, William H.
Prescott, William Hickling
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prescriptivism
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preselection
preselector
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