KR0120528Y1 - 주파수 공용통신 시스템 - Google Patents
주파수 공용통신 시스템Info
- Publication number
- KR0120528Y1 KR0120528Y1 KR2019930030366U KR930030366U KR0120528Y1 KR 0120528 Y1 KR0120528 Y1 KR 0120528Y1 KR 2019930030366 U KR2019930030366 U KR 2019930030366U KR 930030366 U KR930030366 U KR 930030366U KR 0120528 Y1 KR0120528 Y1 KR 0120528Y1
- Authority
- KR
- South Korea
- Prior art keywords
- channel
- frequency
- communication system
- frequency synthesizer
- transmission
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims description 31
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000012885 constant function Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000004397 blinking Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000019589 hardness Nutrition 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2625—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using common wave
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (2)
- 수신주파수 합성기(5)와 송신주파수 합성기(8)를 갖는 주파수 공용통신 시스템에 있어서, 상기 수신주파수 합성기(5) 및 송신주파수 합성기(8)의 출력단에 연결되어 중계기의 채널설정시 경보음을 발생시키는 채널설정 판별기(16)를 포함하여 채널설정이 되지 않을 경우 수신신호를 검출할 수 없도록 한 것을 특징으로 하는 주파수 공용통신 시스템
- 제1항에 있어서 상기 채널설정 판별기(16)는, 상기 송수신주파수 합성기(8,5)의 출력단에 시정수 기능을 갖는 저항(R1,R2)과 콘덴서(C1,C2)가 각각 병렬 접속되고, 상기 저항(R1,R2)과 콘덴서(C1,C2)의 일측단은 앤드게이트(AND)를 통하여 톤 발생기(17)에 접속되고, 상기 톤 발생기(17)의 출력단에는 외부스피커(13)가 연결되도록 한 것을 특징으로 하는 주파수 공용통신 시스템
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019930030366U KR0120528Y1 (ko) | 1993-12-29 | 1993-12-29 | 주파수 공용통신 시스템 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019930030366U KR0120528Y1 (ko) | 1993-12-29 | 1993-12-29 | 주파수 공용통신 시스템 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950022168U KR950022168U (ko) | 1995-07-28 |
KR0120528Y1 true KR0120528Y1 (ko) | 1998-08-17 |
Family
ID=19373372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019930030366U KR0120528Y1 (ko) | 1993-12-29 | 1993-12-29 | 주파수 공용통신 시스템 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0120528Y1 (ko) |
-
1993
- 1993-12-29 KR KR2019930030366U patent/KR0120528Y1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR950022168U (ko) | 1995-07-28 |
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Legal Events
Date | Code | Title | Description |
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UA0108 | Application for utility model registration |
Comment text: Application for Utility Model Registration Patent event code: UA01011R08D Patent event date: 19931229 |
|
A201 | Request for examination | ||
UA0201 | Request for examination |
Patent event date: 19950516 Patent event code: UA02012R01D Comment text: Request for Examination of Application Patent event date: 19931229 Patent event code: UA02011R01I Comment text: Application for Utility Model Registration |
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UG1501 | Laying open of application | ||
E701 | Decision to grant or registration of patent right | ||
UE0701 | Decision of registration |
Patent event date: 19980331 Comment text: Decision to Grant Registration Patent event code: UE07011S01D |
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REGI | Registration of establishment | ||
UR0701 | Registration of establishment |
Patent event date: 19980406 Patent event code: UR07011E01D Comment text: Registration of Establishment |
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UR1002 | Payment of registration fee |
Start annual number: 1 End annual number: 3 Payment date: 19980406 |
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UG1601 | Publication of registration | ||
FPAY | Annual fee payment |
Payment date: 20010406 Year of fee payment: 4 |
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UR1001 | Payment of annual fee |
Payment date: 20010406 Start annual number: 4 End annual number: 4 |
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LAPS | Lapse due to unpaid annual fee |