JPS553274A - Multi-band automatic channel selection radio receiver - Google Patents

Multi-band automatic channel selection radio receiver

Info

Publication number
JPS553274A
JPS553274A JP7605278A JP7605278A JPS553274A JP S553274 A JPS553274 A JP S553274A JP 7605278 A JP7605278 A JP 7605278A JP 7605278 A JP7605278 A JP 7605278A JP S553274 A JPS553274 A JP S553274A
Authority
JP
Japan
Prior art keywords
signal
fmif
sweep
action
discontinuing
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
JP7605278A
Other languages
Japanese (ja)
Inventor
Hideo Shibuya
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7605278A priority Critical patent/JPS553274A/en
Publication of JPS553274A publication Critical patent/JPS553274A/en
Pending legal-status Critical Current

Links

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE: To increase the accuracy for the sweep discontinuing action by oscillating the signals of the differential frequency between the FMIF signal and AMIM signal to deliver the differential frquency signal between the signal and the FMIF signal and then discontinuing the sweep action when the differential frequency signal is delivered.
CONSTITUTION: Oscillator 4 is excited with the frequency equivalent to difference 10.25M Hz between the 10.7M Hz and 0.45M Hz IF signals of FMIF circuit 3 and AMIF circuit 13 respectively, and this output signal and the FMIF signal are mixed up at subtraction circuit 5. As a result, the same 0.45M Hz signal can be obtained from OR gate 6 at both the AM and FM receiving time. Thus, the presence or absence of the 0.45M Hz signal is monitored via gate 6, and the sweep action is discontinued 7 when the output exists. In this way, the accuracy can be increased for the sweep discontinuing action.
COPYRIGHT: (C)1980,JPO&Japio
JP7605278A 1978-06-22 1978-06-22 Multi-band automatic channel selection radio receiver Pending JPS553274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7605278A JPS553274A (en) 1978-06-22 1978-06-22 Multi-band automatic channel selection radio receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7605278A JPS553274A (en) 1978-06-22 1978-06-22 Multi-band automatic channel selection radio receiver

Publications (1)

Publication Number Publication Date
JPS553274A true JPS553274A (en) 1980-01-11

Family

ID=13594004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7605278A Pending JPS553274A (en) 1978-06-22 1978-06-22 Multi-band automatic channel selection radio receiver

Country Status (1)

Country Link
JP (1) JPS553274A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59170589U (en) * 1983-04-30 1984-11-14 株式会社　加藤製作所 Vehicle type crane with overload prevention device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59170589U (en) * 1983-04-30 1984-11-14 株式会社　加藤製作所 Vehicle type crane with overload prevention device
JPS6323432Y2 (en) * 1983-04-30 1988-06-27

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