JPS5472611A - Squelch control system - Google Patents

Squelch control system

Info

Publication number
JPS5472611A
JPS5472611A JP14026977A JP14026977A JPS5472611A JP S5472611 A JPS5472611 A JP S5472611A JP 14026977 A JP14026977 A JP 14026977A JP 14026977 A JP14026977 A JP 14026977A JP S5472611 A JPS5472611 A JP S5472611A
Authority
JP
Japan
Prior art keywords
circuit
oscillation
squelch
tone
stated
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP14026977A
Other languages
Japanese (ja)
Other versions
JPS5847095B2 (en
Inventor
Shinichi Sato
Tatsuya Nakano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP52140269A priority Critical patent/JPS5847095B2/en
Publication of JPS5472611A publication Critical patent/JPS5472611A/en
Publication of JPS5847095B2 publication Critical patent/JPS5847095B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/005—Control by a pilot signal

Landscapes

  • Transceivers (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To enable to monitor a tone squelch circuit extremely easily by controlling it so that it performs a tone squelch action that oscillation of the circuit is continued at the time the set value is less than the stated value and oscillation of it is stopped at the time the set value exceeds the stated value. CONSTITUTION:Noise squelch circuit 9 detects the noise of received input at the time of no signal and suppresses the noise output of received voice output circuit. On the other hand, only when receiving a stated tone sound, tone squelch circuit 13 makes the received sound output circuit operate and, when receiving a stated control signal, it constitutes an oscillation circuit and operates received sound amplifier circuit 2 and speaker 3 independently of tone sound reception. Then squelch adjuster 4 adjusts input to circuit 9; when the set value of adjuster 4 is less than the stated value, it continues oscillation of circuit 13 and, when the set value exceeds the stated value, it stops oscillation and controls circuit 13 so that it can recover the original tone squelch function. Thus, the circuit can be monitored extremely easily.
JP52140269A 1977-11-22 1977-11-22 Squelch control method Expired JPS5847095B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52140269A JPS5847095B2 (en) 1977-11-22 1977-11-22 Squelch control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52140269A JPS5847095B2 (en) 1977-11-22 1977-11-22 Squelch control method

Publications (2)

Publication Number Publication Date
JPS5472611A true JPS5472611A (en) 1979-06-11
JPS5847095B2 JPS5847095B2 (en) 1983-10-20

Family

ID=15264834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52140269A Expired JPS5847095B2 (en) 1977-11-22 1977-11-22 Squelch control method

Country Status (1)

Country Link
JP (1) JPS5847095B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0513924U (en) * 1991-03-05 1993-02-23 三洋電機株式会社 Packaging box equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0513924U (en) * 1991-03-05 1993-02-23 三洋電機株式会社 Packaging box equipment

Also Published As

Publication number Publication date
JPS5847095B2 (en) 1983-10-20

Similar Documents

Publication Publication Date Title
EP0084376A3 (en) Knock control system
JPS5472611A (en) Squelch control system
JPS56152396A (en) Voice start control system by ear microphone
US4286116A (en) Device for the processing of voice signals
JPS53135241A (en) Gain controller
JPS57170640A (en) Receiver having self-diagnosing function
JPS5514774A (en) Output limit amplifier circuit
JPS6051289B2 (en) Transmission control device
JPS5759192A (en) Sound procuding watch device
JPS55138911A (en) Excessive input signal preventive system
JPS5755700A (en) Frequency-compression hearing aid
JPS5593330A (en) Receiver
JPS57104312A (en) Control device for sound volume of acoustic device
JPS5799811A (en) Automatic sound volume adjusting device
JP2807886B2 (en) Tone signal transmission radio
JPS5679599A (en) Loud speaker
JPS56111486A (en) Timer device
JPS5511673A (en) Automatic tone adjusting telephone set
JPS57142063A (en) Audio switch circuit
JPS5531389A (en) Volume controller
JPS573409A (en) Agc circuit
JPS602694Y2 (en) Operation control device for electronic equipment
JPS57124934A (en) Signal switching device
JPS56160145A (en) Acoustic device
JPS57115010A (en) Automatic sound volume adjuster