JPS6328374B2 - - Google Patents

Info

Publication number
JPS6328374B2
JPS6328374B2 JP56078219A JP7821981A JPS6328374B2 JP S6328374 B2 JPS6328374 B2 JP S6328374B2 JP 56078219 A JP56078219 A JP 56078219A JP 7821981 A JP7821981 A JP 7821981A JP S6328374 B2 JPS6328374 B2 JP S6328374B2
Authority
JP
Japan
Prior art keywords
relay station
signal
pilot signal
information
sub
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.)
Expired
Application number
JP56078219A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57193146A (en
Inventor
Izumi Okuno
Tsunehiro Unten
Osamu Yamamoto
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.)
NEC Corp
Original Assignee
Nippon Electric 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP7821981A priority Critical patent/JPS57193146A/ja
Publication of JPS57193146A publication Critical patent/JPS57193146A/ja
Publication of JPS6328374B2 publication Critical patent/JPS6328374B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/40Monitoring; Testing of relay systems
    • H04B17/401Monitoring; Testing of relay systems with selective localization
    • H04B17/402Monitoring; Testing of relay systems with selective localization using different frequencies

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
JP7821981A 1981-05-23 1981-05-23 Monitoring system for relay station Granted JPS57193146A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7821981A JPS57193146A (en) 1981-05-23 1981-05-23 Monitoring system for relay station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7821981A JPS57193146A (en) 1981-05-23 1981-05-23 Monitoring system for relay station

Publications (2)

Publication Number Publication Date
JPS57193146A JPS57193146A (en) 1982-11-27
JPS6328374B2 true JPS6328374B2 (enrdf_load_stackoverflow) 1988-06-08

Family

ID=13655932

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7821981A Granted JPS57193146A (en) 1981-05-23 1981-05-23 Monitoring system for relay station

Country Status (1)

Country Link
JP (1) JPS57193146A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH052787U (ja) * 1991-07-02 1993-01-19 ヤンマー農機株式会社 生ゴミ処理機の防虫剤投入機構

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53144204A (en) * 1977-05-21 1978-12-15 Mitsubishi Electric Corp Transmitting system for optical communication circuit monitor/order signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH052787U (ja) * 1991-07-02 1993-01-19 ヤンマー農機株式会社 生ゴミ処理機の防虫剤投入機構

Also Published As

Publication number Publication date
JPS57193146A (en) 1982-11-27

Similar Documents

Publication Publication Date Title
AU619105B2 (en) Hybrid modulation satellite communication system
JPH0479178B2 (enrdf_load_stackoverflow)
IE33059B1 (en) Improvements in or relating to data transmission systems
JP3039811B2 (ja) 中継器の監視方式
KR880013334A (ko) 수 신 장 치
JPS6328374B2 (enrdf_load_stackoverflow)
JPS6034859B2 (ja) 信号伝送方式
JPH06164554A (ja) 周波数ダイバーシティ通信装置
JPS6228615B2 (enrdf_load_stackoverflow)
Anderson et al. A technique for digital information broadcasting using SCA channels
JPS6439129A (en) Communication equipment facilitating transfer of information between vehicle and stational information spot
JP2517108B2 (ja) ディジタル送受信装置
JPS61285836A (ja) 回線監視方式
JP3197915B2 (ja) 列車通信装置
JPH04137837A (ja) 鉄道用情報伝送装置
KR100681105B1 (ko) 시간분할 편이 변조 장치 및 방법
JPH0464217B2 (enrdf_load_stackoverflow)
JP2571027B2 (ja) 信号伝送方式
JPH0523652B2 (enrdf_load_stackoverflow)
JPS5818821B2 (ja) Psk信号の搬送波同期方式
JPS63110842A (ja) 受信制御方式
JPH0544210B2 (enrdf_load_stackoverflow)
JPH09261288A (ja) データ伝送システム
JPS5829252A (ja) 写真同報電送方式
JPH0453462B2 (enrdf_load_stackoverflow)