JPS52109321A - Squelch circuit - Google Patents

Squelch circuit

Info

Publication number
JPS52109321A
JPS52109321A JP2510776A JP2510776A JPS52109321A JP S52109321 A JPS52109321 A JP S52109321A JP 2510776 A JP2510776 A JP 2510776A JP 2510776 A JP2510776 A JP 2510776A JP S52109321 A JPS52109321 A JP S52109321A
Authority
JP
Japan
Prior art keywords
squelch circuit
needs
low cost
change
over
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.)
Pending
Application number
JP2510776A
Other languages
Japanese (ja)
Inventor
Jiro Mizukawa
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP2510776A priority Critical patent/JPS52109321A/en
Publication of JPS52109321A publication Critical patent/JPS52109321A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/344—Muting responsive to the amount of noise (noise squelch)

Landscapes

  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To provide a low cost squelch circuit dispensing of needs of use costly band filters in many numbers in a receiver necessary to change-over the receiving band width.
JP2510776A 1976-03-10 1976-03-10 Squelch circuit Pending JPS52109321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2510776A JPS52109321A (en) 1976-03-10 1976-03-10 Squelch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2510776A JPS52109321A (en) 1976-03-10 1976-03-10 Squelch circuit

Publications (1)

Publication Number Publication Date
JPS52109321A true JPS52109321A (en) 1977-09-13

Family

ID=12156690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2510776A Pending JPS52109321A (en) 1976-03-10 1976-03-10 Squelch circuit

Country Status (1)

Country Link
JP (1) JPS52109321A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526767A (en) * 1978-08-15 1980-02-26 Nec Corp Fm radio receiver
JPS5698942A (en) * 1980-01-10 1981-08-08 Oki Electric Ind Co Ltd Tone squeltch system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526767A (en) * 1978-08-15 1980-02-26 Nec Corp Fm radio receiver
JPS5698942A (en) * 1980-01-10 1981-08-08 Oki Electric Ind Co Ltd Tone squeltch system
JPS6144417B2 (en) * 1980-01-10 1986-10-02 Oki Electric Ind Co Ltd

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