instantaneous frequency-indicating receiver

instantaneous frequency-indicating receiver

[¦in·stən¦tā·nē·əs ¦frē·kwən·sē ‚in·də‚kād·iŋ ri′sē·vər]
(electronics)
A radio receiver with a digital, cathode-ray, or other display that shows the frequency of a signal at the instant it is picked up anywhere in the band covered by the receiver.
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