GB1214597A - Improvements in or relating to communications system - Google Patents

Improvements in or relating to communications system

Info

Publication number
GB1214597A
GB1214597A GB3212569A GB3212569A GB1214597A GB 1214597 A GB1214597 A GB 1214597A GB 3212569 A GB3212569 A GB 3212569A GB 3212569 A GB3212569 A GB 3212569A GB 1214597 A GB1214597 A GB 1214597A
Authority
GB
United Kingdom
Prior art keywords
channel
band
audio signal
original
frequencies
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
GB3212569A
Other languages
English (en)
Inventor
Leonard Richard Kahn
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1214597A publication Critical patent/GB1214597A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
GB3212569A 1968-06-26 1969-06-25 Improvements in or relating to communications system Expired GB1214597A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74017368A 1968-06-26 1968-06-26

Publications (1)

Publication Number Publication Date
GB1214597A true GB1214597A (en) 1970-12-02

Family

ID=24975355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3212569A Expired GB1214597A (en) 1968-06-26 1969-06-25 Improvements in or relating to communications system

Country Status (2)

Country Link
FR (1) FR2014268A1 (enrdf_load_stackoverflow)
GB (1) GB1214597A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4315105A (en) * 1976-11-23 1982-02-09 Miller Iii Herman P Narrow band transmission system and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447121A1 (fr) * 1979-01-22 1980-08-14 United Kingdom Government Systeme de radiocommunication, notamment pour avions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4315105A (en) * 1976-11-23 1982-02-09 Miller Iii Herman P Narrow band transmission system and method

Also Published As

Publication number Publication date
FR2014268A1 (enrdf_load_stackoverflow) 1970-04-17

Similar Documents

Publication Publication Date Title
ES478337A1 (es) Procedimiento y modulador para reducir la anchura de banda de una onda.
GB590506A (en) Radio relay station
GB540185A (en) System of transmission of electrical waves
GB1125043A (en) Radio telegraph signal transmission
GB1214597A (en) Improvements in or relating to communications system
GB552276A (en) Improvements in television transmission
GB1291444A (en) A frequency modulation communication system
GB1091278A (en) Improvements in or relating to multi-channel single-sideband carrier-frequency communication systems
GB622255A (en) Improvements in or relating to devices for stereophonic transmission by electric means
GB828424A (en) Improvements in and relating to speech signal transmission systems
GB929025A (en) Improvements in or relating to signal transmission systems
JPS5249717A (en) Secondary carrier wave superposition pcm-im transmission system
GB894922A (en) Improvements relating to stereophonic sound transmission systems
GB1308622A (en) Telecommunications apparatus
JPS534413A (en) Hybrid multiplez transmission systen for broacdast lines and telephone lines
GB1007432A (en) Improvements in or relating to the transmission of two audio channels over a singlemodulated carrier or a single pair of wires
GB471876A (en) Improvements in or relating to methods and apparatus for effecting modulated carrier wave signalling
GB632647A (en) Improvements in or relating to multiplex carrier signalling systems
GB694091A (en) Improvements in multi-channel carrier telephone systems
GB773687A (en) Improvements in audio-frequency signalling arrangements in multiplex carrier wave telephone systems
GB1185095A (en) Limited Energy Speech Transmission and Recieving System
GB728388A (en) Improvements in or relating to multi-channel communication systems
GB668000A (en) Duplex signalling system for sound and facsimile
SE317407B (enrdf_load_stackoverflow)
GB533479A (en) Improvements in frequency modulation systems for carrier wave signalling

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee