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Application filed by Cobra Electronics CorpfiledCriticalCobra Electronics Corp
Priority to MYPI9801557priorityCriticalpatent/MY121691A/en
Publication of MY121691ApublicationCriticalpatent/MY121691A/en
Reduction Or Emphasis Of Bandwidth Of Signals
(AREA)
Abstract
A METHOD AND APPARATUS FOR IMPROVING THE SIGNAL-TO-NOISE RATIO OF A CITIZEN'S BAND (CB) RADIO IS DISCLOSED. A COMPANDER CIRCUIT (30) IS USED IN BOTH THE TRANSMITTING AND RECEIVING PORTIONS OF THE CITIZEN'S BAND RADIO. DEMODULATED INCOMING AUDIO SIGNALS ARE EXPANDED BY THE COMPANDER CIRCUIT (30) TO INCREASE THE DYNAMIC RANGE OF THE INCOMING AUDIO SIGNALS. OUTGOING AUDIO SIGNALS FROM A MICROPHONE (36) ARE COMPRESSED BY THE COMPANDER CIRCUIT (30) TO DECREASE THE DYNAMIC RANGE OF THE OUTGOING AUDIO SIGNALS BEFORE THEY ARE AMPLIFIED AND TRANSMITTED.
MYPI98015571998-04-081998-04-08Radio with improved reception
MY121691A
(en)