[go: up one dir, main page]

IT1070376B - METHOD AND EQUIPMENT FOR RADIOCOMMUNICATIONS AND/OR RADIO SIGNALS IN LIMITED ENVIRONMENTS WITH MAINLY LONGITUDINAL DEVELOPMENT AND CONNECTED WITH THE OUTSIDE AT THE ENDS, EVEN UNDERGROUND, ESPECIALLY TUNNELS EVEN OF CONSIDERABLE LENGTH - Google Patents

METHOD AND EQUIPMENT FOR RADIOCOMMUNICATIONS AND/OR RADIO SIGNALS IN LIMITED ENVIRONMENTS WITH MAINLY LONGITUDINAL DEVELOPMENT AND CONNECTED WITH THE OUTSIDE AT THE ENDS, EVEN UNDERGROUND, ESPECIALLY TUNNELS EVEN OF CONSIDERABLE LENGTH

Info

Publication number
IT1070376B
IT1070376B IT09381/76A IT938176A IT1070376B IT 1070376 B IT1070376 B IT 1070376B IT 09381/76 A IT09381/76 A IT 09381/76A IT 938176 A IT938176 A IT 938176A IT 1070376 B IT1070376 B IT 1070376B
Authority
IT
Italy
Prior art keywords
radiocommunications
equipment
outside
radio signals
considerable length
Prior art date
Application number
IT09381/76A
Other languages
Italian (it)
Original Assignee
Sina Spa
Imart Srl
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 Sina Spa, Imart Srl filed Critical Sina Spa
Priority to IT09381/76A priority Critical patent/IT1070376B/en
Priority to CH1466376A priority patent/CH615306A5/en
Priority to FR7708522A priority patent/FR2345865A1/en
Priority to DE19772712498 priority patent/DE2712498A1/en
Application granted granted Critical
Publication of IT1070376B publication Critical patent/IT1070376B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/28—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium using the near field of leaky cables, e.g. of leaky coaxial cables

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
IT09381/76A 1976-03-22 1976-03-22 METHOD AND EQUIPMENT FOR RADIOCOMMUNICATIONS AND/OR RADIO SIGNALS IN LIMITED ENVIRONMENTS WITH MAINLY LONGITUDINAL DEVELOPMENT AND CONNECTED WITH THE OUTSIDE AT THE ENDS, EVEN UNDERGROUND, ESPECIALLY TUNNELS EVEN OF CONSIDERABLE LENGTH IT1070376B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT09381/76A IT1070376B (en) 1976-03-22 1976-03-22 METHOD AND EQUIPMENT FOR RADIOCOMMUNICATIONS AND/OR RADIO SIGNALS IN LIMITED ENVIRONMENTS WITH MAINLY LONGITUDINAL DEVELOPMENT AND CONNECTED WITH THE OUTSIDE AT THE ENDS, EVEN UNDERGROUND, ESPECIALLY TUNNELS EVEN OF CONSIDERABLE LENGTH
CH1466376A CH615306A5 (en) 1976-03-22 1976-11-22 Process and apparatus for the transmission of radio signals in a confined medium with longitudinal prevailing development and which is linked to the outside at the ends
FR7708522A FR2345865A1 (en) 1976-03-22 1977-03-22 PROCESS AND APPARATUS FOR RADIOCOMMUNICATIONS AND / OR RADIO SIGNALS IN CLOSED AREAS
DE19772712498 DE2712498A1 (en) 1976-03-22 1977-03-22 PROCEDURE AND ARRANGEMENT FOR THE RADIO CONNECTION OR RADIO SIGNALING IN LIMITED SPACES WITH PRIORLY LOCAL TRAINING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT09381/76A IT1070376B (en) 1976-03-22 1976-03-22 METHOD AND EQUIPMENT FOR RADIOCOMMUNICATIONS AND/OR RADIO SIGNALS IN LIMITED ENVIRONMENTS WITH MAINLY LONGITUDINAL DEVELOPMENT AND CONNECTED WITH THE OUTSIDE AT THE ENDS, EVEN UNDERGROUND, ESPECIALLY TUNNELS EVEN OF CONSIDERABLE LENGTH

Publications (1)

Publication Number Publication Date
IT1070376B true IT1070376B (en) 1985-03-29

Family

ID=11129275

Family Applications (1)

Application Number Title Priority Date Filing Date
IT09381/76A IT1070376B (en) 1976-03-22 1976-03-22 METHOD AND EQUIPMENT FOR RADIOCOMMUNICATIONS AND/OR RADIO SIGNALS IN LIMITED ENVIRONMENTS WITH MAINLY LONGITUDINAL DEVELOPMENT AND CONNECTED WITH THE OUTSIDE AT THE ENDS, EVEN UNDERGROUND, ESPECIALLY TUNNELS EVEN OF CONSIDERABLE LENGTH

Country Status (4)

Country Link
CH (1) CH615306A5 (en)
DE (1) DE2712498A1 (en)
FR (1) FR2345865A1 (en)
IT (1) IT1070376B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3907733A1 (en) * 1989-03-10 1990-09-20 Bergwerksverband Gmbh Method and device for radio transmission in underground mines without waveguides
DE3910944C1 (en) * 1989-04-05 1991-01-17 Siebert, Gerhard, 3200 Hildesheim, De Arrangement for setting up radio traffic between mobile stations in underground mining
DE3942320A1 (en) * 1989-10-10 1991-04-11 Wk Elektronik Gmbh Communication system esp. for salt mine - uses single frequency phase locked loop radio system at base stations connected by wire to central station
US5627879A (en) 1992-09-17 1997-05-06 Adc Telecommunications, Inc. Cellular communications system with centralized base stations and distributed antenna units
DE4335345A1 (en) * 1993-10-16 1995-04-20 Sel Alcatel Ag Mobile base station and antenna arrangement to provide radio coverage for a tunnel
US6112086A (en) * 1997-02-25 2000-08-29 Adc Telecommunications, Inc. Scanning RSSI receiver system using inverse fast fourier transforms for a cellular communications system with centralized base stations and distributed antenna units
US6704545B1 (en) 2000-07-19 2004-03-09 Adc Telecommunications, Inc. Point-to-multipoint digital radio frequency transport
US7184728B2 (en) 2002-02-25 2007-02-27 Adc Telecommunications, Inc. Distributed automatic gain control system
US7171244B2 (en) 2002-12-03 2007-01-30 Adc Telecommunications, Inc. Communication system and method with gain control for signals from distributed antennas
US8958789B2 (en) 2002-12-03 2015-02-17 Adc Telecommunications, Inc. Distributed digital antenna system
US7103377B2 (en) 2002-12-03 2006-09-05 Adc Telecommunications, Inc. Small signal threshold and proportional gain distributed digital communications
US7599711B2 (en) 2006-04-12 2009-10-06 Adc Telecommunications, Inc. Systems and methods for analog transport of RF voice/data communications
US8737454B2 (en) 2007-01-25 2014-05-27 Adc Telecommunications, Inc. Modular wireless communications platform
US8583100B2 (en) 2007-01-25 2013-11-12 Adc Telecommunications, Inc. Distributed remote base station system
US9001811B2 (en) 2009-05-19 2015-04-07 Adc Telecommunications, Inc. Method of inserting CDMA beacon pilots in output of distributed remote antenna nodes
US9577922B2 (en) 2014-02-18 2017-02-21 Commscope Technologies Llc Selectively combining uplink signals in distributed antenna systems
US10499269B2 (en) 2015-11-12 2019-12-03 Commscope Technologies Llc Systems and methods for assigning controlled nodes to channel interfaces of a controller

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517315A (en) * 1967-06-21 1970-06-23 Itt Mobile telephone transmitter selector circuit
DD108017A1 (en) * 1973-10-29 1974-08-20
GB1485156A (en) * 1974-08-07 1977-09-08 Coal Ind Radiating line telecommunication systems

Also Published As

Publication number Publication date
DE2712498A1 (en) 1978-01-12
FR2345865A1 (en) 1977-10-21
CH615306A5 (en) 1980-01-15

Similar Documents

Publication Publication Date Title
IT1070376B (en) METHOD AND EQUIPMENT FOR RADIOCOMMUNICATIONS AND/OR RADIO SIGNALS IN LIMITED ENVIRONMENTS WITH MAINLY LONGITUDINAL DEVELOPMENT AND CONNECTED WITH THE OUTSIDE AT THE ENDS, EVEN UNDERGROUND, ESPECIALLY TUNNELS EVEN OF CONSIDERABLE LENGTH
IT1143566B (en) PROCEDURE AND APPARATUS FOR THE EXPLOITATION OF UNDERGROUND GEOTHERMAL SOURCES
JPS5299901A (en) Drill string buffer device
GB1542219A (en) Boring bits and method of making same
GB1544033A (en) Earth bore drilling
ZA771682B (en) Rock drill
ZA767639B (en) Pneumatic hammer-auger earth boring apparatus
ZA773155B (en) Rock bit bearing structure
JPS52128918A (en) Inorganic hard foamed substance and its production
JPS52126013A (en) Earth drilling apparatus
DK132092A (en) THIENO AND FUROOE2,3-BAA AND -OE3,2-BAAPYRIDINES
FI844329A7 (en) Mobile drilling equipment.
ZA774637B (en) Rock drilling method
SE423253B (en) Rock drilling equipment
AT376341B (en) BROADBAND TUNNEL RADIO
JPS5318404A (en) Rock drill with muffler
JPS5374727A (en) Underground cavity tunneling method
JPS5356834A (en) Construction method of underground structure that use tunnel
JPS5383324A (en) Long box culvert tunnel structure and method of building same
JPS5286240A (en) Tunnel construction method
JPS535813A (en) Earth drilling apparatus
JPS5314933A (en) Method of tunnel construction
JPS5330140A (en) Method of underground building structure
JPS54160023A (en) Tunnel structure and its constructing method
JPS5358803A (en) Drilling and pumping means

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950327