JPS54140409A - Automatic clarifying circuit for ssb receiver - Google Patents

Automatic clarifying circuit for ssb receiver

Info

Publication number
JPS54140409A
JPS54140409A JP4778678A JP4778678A JPS54140409A JP S54140409 A JPS54140409 A JP S54140409A JP 4778678 A JP4778678 A JP 4778678A JP 4778678 A JP4778678 A JP 4778678A JP S54140409 A JPS54140409 A JP S54140409A
Authority
JP
Japan
Prior art keywords
ssb
frequency
signals
detector
circuit
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
JP4778678A
Other languages
Japanese (ja)
Inventor
Yohei Saito
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 Ltd
Original Assignee
Hitachi Ltd
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 Ltd filed Critical Hitachi Ltd
Priority to JP4778678A priority Critical patent/JPS54140409A/en
Publication of JPS54140409A publication Critical patent/JPS54140409A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)

Abstract

PURPOSE:To secure an automatic clarifying operation by using the locked oscillator which generates the synchronized continuous signals in a steady way by the SSB signals. CONSTITUTION:The SSB signals received through antenna 1 are delivered through speaker 7 via mixer 3, IF amplifier circuit 4, SSB demodulator 5 and others. While locked oscillator 13 receives the SSB signals from IF amplifier 4 and then oscillates with the frequency locked to the frequency of the SSB signal. The oscillated signals are turned into the DC control signals through FM detector 14 to be held at the holding circuit and then applied to variable capacity element 10 to control the frequency of local oscillator 8 in case the change-over switch is switched to automatic side A. The signal of oscillater 8 is applied also to FM detector 17 to generate the fixed DC voltage. The generated DC voltage is then applied to comparator 16 to be compared with the output of detector 14. When the frequency of amplifier 4 varies and the voltage difference exceeds the fixed level, the holding action of circuit 15 is released. And the output of detector 14 is applied to element 10 to vary the frequency of oscillator 8.
JP4778678A 1978-04-24 1978-04-24 Automatic clarifying circuit for ssb receiver Pending JPS54140409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4778678A JPS54140409A (en) 1978-04-24 1978-04-24 Automatic clarifying circuit for ssb receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4778678A JPS54140409A (en) 1978-04-24 1978-04-24 Automatic clarifying circuit for ssb receiver

Publications (1)

Publication Number Publication Date
JPS54140409A true JPS54140409A (en) 1979-10-31

Family

ID=12785049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4778678A Pending JPS54140409A (en) 1978-04-24 1978-04-24 Automatic clarifying circuit for ssb receiver

Country Status (1)

Country Link
JP (1) JPS54140409A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11142030B2 (en) 2019-12-24 2021-10-12 Kawasaki Jukogyo Kabushiki Kaisha Protection structure for vehicle suspension device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11142030B2 (en) 2019-12-24 2021-10-12 Kawasaki Jukogyo Kabushiki Kaisha Protection structure for vehicle suspension device

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