JPS553274A - Multi-band automatic channel selection radio receiver - Google Patents
Multi-band automatic channel selection radio receiverInfo
- 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
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
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)
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 |
-
1978
- 1978-06-22 JP JP7605278A patent/JPS553274A/en active Pending
Cited By (2)
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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