GB181095A - Improvements in wireless telegraphy - Google Patents

Improvements in wireless telegraphy

Info

Publication number
GB181095A
GB181095A GB7029/21A GB702921A GB181095A GB 181095 A GB181095 A GB 181095A GB 7029/21 A GB7029/21 A GB 7029/21A GB 702921 A GB702921 A GB 702921A GB 181095 A GB181095 A GB 181095A
Authority
GB
United Kingdom
Prior art keywords
give
frequencies
key
diplex
frequency
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
GB7029/21A
Other languages
English (en)
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
Priority to NL11057D priority Critical patent/NL11057C/xx
Application filed by Individual filed Critical Individual
Priority to GB7029/21A priority patent/GB181095A/en
Priority to DEM76365D priority patent/DE372468C/de
Priority to US540387A priority patent/US1681564A/en
Publication of GB181095A publication Critical patent/GB181095A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Transceivers (AREA)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
GB7029/21A 1921-03-03 1921-03-03 Improvements in wireless telegraphy Expired GB181095A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL11057D NL11057C (enrdf_load_stackoverflow) 1921-03-03
GB7029/21A GB181095A (en) 1921-03-03 1921-03-03 Improvements in wireless telegraphy
DEM76365D DE372468C (de) 1921-03-03 1922-01-14 Anordnung fuer drahtlose Nachrichtenuebermittlung
US540387A US1681564A (en) 1921-03-03 1922-03-02 Radio signaling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7029/21A GB181095A (en) 1921-03-03 1921-03-03 Improvements in wireless telegraphy

Publications (1)

Publication Number Publication Date
GB181095A true GB181095A (en) 1922-06-06

Family

ID=9825272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7029/21A Expired GB181095A (en) 1921-03-03 1921-03-03 Improvements in wireless telegraphy

Country Status (4)

Country Link
US (1) US1681564A (enrdf_load_stackoverflow)
DE (1) DE372468C (enrdf_load_stackoverflow)
GB (1) GB181095A (enrdf_load_stackoverflow)
NL (1) NL11057C (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE490426A (enrdf_load_stackoverflow) * 1944-07-13
US2505843A (en) * 1945-06-04 1950-05-02 Philco Corp Television receiver
US2498488A (en) * 1946-06-14 1950-02-21 Gen Electric Television intercarrier or sound receiver circuit
FR957435A (enrdf_load_stackoverflow) * 1946-06-26 1950-02-20
US2562703A (en) * 1947-12-26 1951-07-31 Gen Electric Multiple channel radio receiving system
WO2012071088A1 (en) 2010-11-24 2012-05-31 University Of Florida Research Foundation Inc. Wireless power transfer via electrodynamic coupling

Also Published As

Publication number Publication date
DE372468C (de) 1923-03-28
US1681564A (en) 1928-08-21
NL11057C (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
GB181095A (en) Improvements in wireless telegraphy
GB161580A (en) Improvements relating to the reception of radio signals
US1882772A (en) Wireless receiving apparatus
GB253152A (en) Improvements in or relating to wireless telegraphy and telephony
GB506306A (en) Improvements in or relating to modulated carrier wave systems
SU47351A1 (ru) Дуплексное устройство
GB157060A (en) Improvements in electromagnetic wave signalling systems
GB372692A (en) Improvements in or relating to heterodyne receivers, suitable for use for wireless and other high frequency reception
SU39848A1 (ru) Способ дуплексной радиотелефонной св зи
US1669219A (en) Method of reducing fading effects in radiocommunication
US1545502A (en) Radiotelephony
US1672998A (en) Telegraph system
GB183416A (en) Improvements in radio signalling systems
GB381784A (en) Improved means for eliminating interference in electric signalling systems
GB351420A (enrdf_load_stackoverflow)
GB218282A (en) Improvements in secret signalling systems
GB563520A (en) Improvements in or relating to electrical apparatus including networks suitable for use for dual signal transmission
GB357499A (en) Improvements in or relating to heterodyne receivers
GB336096A (en) Improvements in multiplex high frequency signalling systems
GB582176A (en) Improvements in duplex radio-signalling systems
GB156654A (en) Improvements in wireless antenna systems
GB814887A (en) Improvements in and relating to electric carrier telegraph systems
GB218601A (en) Improvements in oscillatory telegraph-telephone systems
GB225570A (en) Improvements in wireless receiving apparatus for eliminating disturbances
GB437731A (en) Improvements in and relating to wireless and like apparatus for the reception of modulated carrier oscillations