GB148951A - Improvements in and relating to a receiving arrangement for the reception of electromagnetic waves - Google Patents

Improvements in and relating to a receiving arrangement for the reception of electromagnetic waves

Info

Publication number
GB148951A
GB148951A GB20809/20A GB2080920A GB148951A GB 148951 A GB148951 A GB 148951A GB 20809/20 A GB20809/20 A GB 20809/20A GB 2080920 A GB2080920 A GB 2080920A GB 148951 A GB148951 A GB 148951A
Authority
GB
United Kingdom
Prior art keywords
photographic
cascade
lamp
battery
oscillations
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
GB20809/20A
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 GB148951A publication Critical patent/GB148951A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/18—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of receivers
    • H04L13/182—Printing mechanisms
    • H04L13/184—Photographic printing and recording
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/08—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/14—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles
    • H03D1/16—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles of discharge tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Facsimiles In General (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

148,951. Latour, M. C. A. Oct. 21, 1916, [Convention date]. Optical and photographic receivers and recorders.-Wireless signals are amplified by a cascade of thermionic valves and detected by a glowlamp 7, the very fine tungsten or other metallic filament of which is raised to a temperature just below incandescence by a battery 8 or by a local source of electric oscillations of the same frequency as the received waves. The signals may be recorded on a photographic band which is automatically unwound before a window illuminated by the lamp. The oscillations may be rectified before detection, or a detector yielding low-frequency current may be interpolated. The lamp 7 may be protected from excessive currents by a boron resistance 9. In the case of wireless telephony, the photographic record is used in conjunction with a selenium cell for reproducing conversation. In the cascade of valves shown in the drawing, the filaments F have a common battery 3 and the plates P have a common battery 4, the second grid G being coupled at 5 to the first plate circuit.
GB20809/20A 1916-10-21 1920-07-10 Improvements in and relating to a receiving arrangement for the reception of electromagnetic waves Expired GB148951A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR503047T 1916-10-21
US396281A US1522305A (en) 1916-10-21 1920-07-14 Radioreceiver

Publications (1)

Publication Number Publication Date
GB148951A true GB148951A (en) 1921-10-06

Family

ID=26214648

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20809/20A Expired GB148951A (en) 1916-10-21 1920-07-10 Improvements in and relating to a receiving arrangement for the reception of electromagnetic waves

Country Status (6)

Country Link
US (1) US1522305A (en)
BE (1) BE148951A (en)
DE (1) DE366268C (en)
FR (1) FR503047A (en)
GB (1) GB148951A (en)
NL (1) NL7842C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767767C (en) * 1937-04-06 1953-05-18 Automatic Telephone & Elect Spark extinguishing arrangement for telecommunications, especially telephone systems

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL102095C (en) * 1955-07-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767767C (en) * 1937-04-06 1953-05-18 Automatic Telephone & Elect Spark extinguishing arrangement for telecommunications, especially telephone systems

Also Published As

Publication number Publication date
US1522305A (en) 1925-01-06
BE148951A (en)
DE366268C (en) 1923-01-02
FR503047A (en) 1920-06-01
NL7842C (en)

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