CA986190A - Radio-frequency relay system - Google Patents

Radio-frequency relay system

Info

Publication number
CA986190A
CA986190A CA157,303A CA157303A CA986190A CA 986190 A CA986190 A CA 986190A CA 157303 A CA157303 A CA 157303A CA 986190 A CA986190 A CA 986190A
Authority
CA
Canada
Prior art keywords
radio
relay system
frequency relay
frequency
relay
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
CA157,303A
Other versions
CA157303S (en
Inventor
Shinichi Nakamura
Masami Takada
Kazuo Morita
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
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Application granted granted Critical
Publication of CA986190A publication Critical patent/CA986190A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/74Details 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 for increasing reliability, e.g. using redundant or spare channels or apparatus
CA157,303A 1971-11-24 1972-11-23 Radio-frequency relay system Expired CA986190A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9471671A JPS5412766B2 (en) 1971-11-24 1971-11-24

Publications (1)

Publication Number Publication Date
CA986190A true CA986190A (en) 1976-03-23

Family

ID=14117847

Family Applications (1)

Application Number Title Priority Date Filing Date
CA157,303A Expired CA986190A (en) 1971-11-24 1972-11-23 Radio-frequency relay system

Country Status (4)

Country Link
US (1) US3866121A (en)
JP (1) JPS5412766B2 (en)
CA (1) CA986190A (en)
IT (1) IT971164B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50104516A (en) * 1974-01-18 1975-08-18
JPS51100623A (en) * 1975-03-03 1976-09-06 Nippon Telegraph & Telephone EISEITSUSHI NHOSHIKI
JPS5276802A (en) * 1975-12-22 1977-06-28 Nippon Telegr & Teleph Corp <Ntt> Transmission line for light fiber repeating
JPS53148312A (en) * 1977-05-31 1978-12-23 Fujitsu Ltd Demodulation system for auxiliary line in direct repeating radio unit
FR2511772A1 (en) * 1981-08-24 1983-02-25 Inst Francais Du Petrole DEVICE FOR SEQUENTIALLY TRANSMITTING RADIO OR CABLE SIGNALS BETWEEN A CENTRAL CONTROL SYSTEM AND DATA ACQUISITION APPARATUSES
GB2165412B (en) * 1984-10-05 1988-08-10 Stc Plc Improvements in optical transmission systems
GB2222055B (en) * 1988-08-16 1992-10-28 Plessey Telecomm Telecommunications transmission security arrangement
JP2002152215A (en) * 2000-11-07 2002-05-24 Nec Corp Wireless communication network and wireless communication system
EP1391058A4 (en) * 2001-05-02 2006-01-25 Trex Entpr Corp Millimeter wave communication link
US7844273B2 (en) * 2006-07-14 2010-11-30 Lgc Wireless, Inc. System for and method of for providing dedicated capacity in a cellular network
US7848770B2 (en) * 2006-08-29 2010-12-07 Lgc Wireless, Inc. Distributed antenna communications system and methods of implementing thereof
US7817958B2 (en) * 2006-12-22 2010-10-19 Lgc Wireless Inc. System for and method of providing remote coverage area for wireless communications
US8005050B2 (en) 2007-03-23 2011-08-23 Lgc Wireless, Inc. Localization of a mobile device in distributed antenna communications system
US8010116B2 (en) 2007-06-26 2011-08-30 Lgc Wireless, Inc. Distributed antenna communications system
US9112547B2 (en) * 2007-08-31 2015-08-18 Adc Telecommunications, Inc. System for and method of configuring distributed antenna communications system
JP6504562B2 (en) * 2015-07-03 2019-04-24 日本無線株式会社 Communication diagnostic system and communication diagnostic method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733296A (en) * 1956-01-31 Automatic line switching circuits
NL173617B (en) * 1951-11-28 British Visqueen Ltd METHOD OF PACKING ARTICLES IN A PLASTIC FOIL COVER.
NL181541B (en) * 1953-02-06 Hermanus Karl Van Deursen DRIVING LEVEL CONTROL FOR LOW-FREQUENT TRANSISTOR POWER AMPLIFIERS FOR PROTECTION WHEN EXCEEDING AMPLITUDE, CURRENT AND TEMPERATURE LIMITS.
US3111624A (en) * 1960-01-04 1963-11-19 Bell Telephone Labor Inc Automatic system for selectively substituting spare channels for failed working channels in a multichannel multilink communication system
BE731482A (en) * 1968-05-15 1969-09-15

Also Published As

Publication number Publication date
IT971164B (en) 1974-04-30
JPS5412766B2 (en) 1979-05-25
US3866121A (en) 1975-02-11
JPS4859717A (en) 1973-08-22

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