MY119808A - Two-way radio with improved squelch - Google Patents

Two-way radio with improved squelch

Info

Publication number
MY119808A
MY119808A MYPI9804635A MY119808A MY 119808 A MY119808 A MY 119808A MY PI9804635 A MYPI9804635 A MY PI9804635A MY 119808 A MY119808 A MY 119808A
Authority
MY
Malaysia
Prior art keywords
radio
bandwidth
processing circuitry
way radio
radio frequency
Prior art date
Application number
Inventor
Lee Siew Yin
Cheah Chow Loong
Original Assignee
Motorola Malaysia Sdn Bhd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Malaysia Sdn Bhd filed Critical Motorola Malaysia Sdn Bhd
Priority to MYPI9804635 priority Critical patent/MY119808A/en
Publication of MY119808A publication Critical patent/MY119808A/en

Links

Abstract

A TWO-WAY RADIO (1) THAT HAS A RADIO FREQUENCY RECEIVER (2) HAVING A MODULATED RADIO FREQUENCY SIGNAL OUTPUT AND A VARIABLE BANDWIDTH FILTER (3) WITH AN INPUT COUPLED TO THE MODULATED RADIO FREQUENCY SIGNAL OUTPUT. THE RADIO (1) ALSO HAS DEMODULATOR CIRCUITRY (4), A SPEAKER (6) AND PROCESSING CIRCUITRY (5). IN USE WHEN THE RADIO (1) IS OPERATING IN SQUELCH MODE, THE PROCESSING CIRCUITRY (5) CONTROLS THE VARIABLE BANDWIDTH FILTER (3) TO HAVE A FIRST BANDWIDTH AND WHEN IN UNSQUELCH MODE THE PROCESSING CIRCUITRY (5) CONTROLS THE VARIABLE BANDWIDTH FILTER (3) TO HAVE A SECOND BANDWIDTH WHICH HAS A SMALLER FREQUENCY RANGE AND THE FIRST BANDWIDTH.FIG. 1
MYPI9804635 1998-10-09 1998-10-09 Two-way radio with improved squelch MY119808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MYPI9804635 MY119808A (en) 1998-10-09 1998-10-09 Two-way radio with improved squelch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MYPI9804635 MY119808A (en) 1998-10-09 1998-10-09 Two-way radio with improved squelch

Publications (1)

Publication Number Publication Date
MY119808A true MY119808A (en) 2005-07-29

Family

ID=47227320

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI9804635 MY119808A (en) 1998-10-09 1998-10-09 Two-way radio with improved squelch

Country Status (1)

Country Link
MY (1) MY119808A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5146187A (en) * 1991-07-01 1992-09-08 Ericsson Ge Mobile Communications Inc. Synthesizer loop filter for scanning receivers
US5303409A (en) * 1992-06-04 1994-04-12 Motorola, Inc. Automatically compensated squelch circuit
US5303408A (en) * 1992-04-03 1994-04-12 Motorola, Inc. Squelch detector
US5412346A (en) * 1993-12-13 1995-05-02 At&T Corp. Variable gain voltage signal amplifier
US5564090A (en) * 1993-09-09 1996-10-08 Lockheed Martin Ims Corporation Method and apparatus for dynamically adjusting receiver squelch threshold
US5598430A (en) * 1994-11-15 1997-01-28 Uniden Corporation Analog/digital receiver

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5146187A (en) * 1991-07-01 1992-09-08 Ericsson Ge Mobile Communications Inc. Synthesizer loop filter for scanning receivers
US5303408A (en) * 1992-04-03 1994-04-12 Motorola, Inc. Squelch detector
US5303409A (en) * 1992-06-04 1994-04-12 Motorola, Inc. Automatically compensated squelch circuit
US5564090A (en) * 1993-09-09 1996-10-08 Lockheed Martin Ims Corporation Method and apparatus for dynamically adjusting receiver squelch threshold
US5412346A (en) * 1993-12-13 1995-05-02 At&T Corp. Variable gain voltage signal amplifier
US5598430A (en) * 1994-11-15 1997-01-28 Uniden Corporation Analog/digital receiver

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