GB338300A - High frequency broadcasting over power lines - Google Patents

High frequency broadcasting over power lines

Info

Publication number
GB338300A
GB338300A GB30375/29A GB3037529A GB338300A GB 338300 A GB338300 A GB 338300A GB 30375/29 A GB30375/29 A GB 30375/29A GB 3037529 A GB3037529 A GB 3037529A GB 338300 A GB338300 A GB 338300A
Authority
GB
United Kingdom
Prior art keywords
lines
power
broadcasting station
frequency
substations
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
GB30375/29A
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.)
ROBERT DUDLEY DUNCAN JR
Wired Radio Inc
Original Assignee
ROBERT DUDLEY DUNCAN JR
Wired Radio Inc
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
Priority to US678581A priority Critical patent/US1730412A/en
Application filed by ROBERT DUDLEY DUNCAN JR, Wired Radio Inc filed Critical ROBERT DUDLEY DUNCAN JR
Priority to GB30375/29A priority patent/GB338300A/en
Priority to FR682882D priority patent/FR682882A/en
Publication of GB338300A publication Critical patent/GB338300A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems
    • H04H20/84—Wired systems combined with power distribution network

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

338,300. Wired Radio, Inc., and Duncan, R. D. oct. 7,1929. Wired-wireless systems.-A system of high-frequency broadcasting over a power net. work comprising distributing substations and consumers' branch lines is characterized by the provision of separate carrier-current lines between the broadcasting station and said substations, means being provided for preventing feedback of high-frequency energy from the broadcasting station to the central power station. A part of the complete system (Fig. 1, not shown) is shown in Fig. 2, in which high-frequency signals from the broadcasting station 33 are conveyed along specially provided lines to a substation 3 which is fed by transformer 13 with three-phase power from the lines 11, and feeds bus-bars 30 - - 32. The high-frequncy signals, after optional amplification by a thermionic amplifier 49, are fed to two of the power bus-bars enabling programs to be tapped off from any pair. Condensers 52, 53 isolate the carrier-wave apparatus from the power voltages and serve to tune the line. Highfrequency chokes 54 in the lines 11 prevent feed back and self-oscillation of the amplifier 49.
GB30375/29A 1923-12-05 1929-10-07 High frequency broadcasting over power lines Expired GB338300A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US678581A US1730412A (en) 1923-12-05 1923-12-05 High-frequency broadcasting over power lines
GB30375/29A GB338300A (en) 1929-10-07 1929-10-07 High frequency broadcasting over power lines
FR682882D FR682882A (en) 1929-10-07 1929-10-08 Improvements to high frequency transmission systems on power lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30375/29A GB338300A (en) 1929-10-07 1929-10-07 High frequency broadcasting over power lines

Publications (1)

Publication Number Publication Date
GB338300A true GB338300A (en) 1930-11-20

Family

ID=10306680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30375/29A Expired GB338300A (en) 1923-12-05 1929-10-07 High frequency broadcasting over power lines

Country Status (3)

Country Link
US (1) US1730412A (en)
FR (1) FR682882A (en)
GB (1) GB338300A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126845A (en) * 1982-07-27 1984-03-28 Arf Products Radio communication systems for underground mines

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093706A (en) * 1958-02-25 1963-06-11 Electronic Measurement Systems Television system
US5835128A (en) * 1996-11-27 1998-11-10 Hughes Electronics Corporation Wireless redistribution of television signals in a multiple dwelling unit
US6014110A (en) * 1997-04-11 2000-01-11 Hughes Electronics Corporation Antenna and method for receiving or transmitting radiation through a dielectric material
US6100853A (en) * 1997-09-10 2000-08-08 Hughes Electronics Corporation Receiver/transmitter system including a planar waveguide-to-stripline adapter
US7319717B2 (en) * 2005-06-28 2008-01-15 International Broadband Electric Communications, Inc. Device and method for enabling communications signals using a medium voltage power line
US7414526B2 (en) * 2005-06-28 2008-08-19 International Broadband Communications, Inc. Coupling of communications signals to a power line
US7778514B2 (en) * 2005-07-15 2010-08-17 International Broadband Electric Communications, Inc. Coupling of communications signals to a power line
US7522812B2 (en) * 2005-07-15 2009-04-21 International Broadband Electric Communications, Inc. Coupling of communications signals to a power line
US7667344B2 (en) * 2005-07-15 2010-02-23 International Broadband Electric Communications, Inc. Coupling communications signals to underground power lines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126845A (en) * 1982-07-27 1984-03-28 Arf Products Radio communication systems for underground mines

Also Published As

Publication number Publication date
FR682882A (en) 1930-06-03
US1730412A (en) 1929-10-08

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