[go: up one dir, main page]

GB159959A - Improvements in electromagnetic wave signalling apparatus - Google Patents

Improvements in electromagnetic wave signalling apparatus

Info

Publication number
GB159959A
GB159959A GB3048719A GB3048719A GB159959A GB 159959 A GB159959 A GB 159959A GB 3048719 A GB3048719 A GB 3048719A GB 3048719 A GB3048719 A GB 3048719A GB 159959 A GB159959 A GB 159959A
Authority
GB
United Kingdom
Prior art keywords
valve
frequency
continuous waves
receiving
electromagnetic wave
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
GB3048719A
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
Priority to GB3048719A priority Critical patent/GB159959A/en
Publication of GB159959A publication Critical patent/GB159959A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

159,959. Robinson, J., and Crowther, H. L. Dec. 5, 1919. Thermionic detectors; audible reception of unmodulated continuous waves.-In a receiving system for continuous waves, a valve 6 oscillating at an audible frequency affects the grid potential of a receiving-valve 10 in such a way that the positive peaks of the low-frequency oscillations just bring the valve 10 to the condition represented by the lower bend of its grid potentialanode current curve. The valve 10 thus only passes current due to the received continuous waves at intervals depending on the frequency to which the low frequency valve is tuned. 'In a modification, the receiving valve 10 has a fixed saturation point, and this point is used instead of the lower bend of the characteristic.
GB3048719A 1919-12-05 1919-12-05 Improvements in electromagnetic wave signalling apparatus Expired GB159959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3048719A GB159959A (en) 1919-12-05 1919-12-05 Improvements in electromagnetic wave signalling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3048719A GB159959A (en) 1919-12-05 1919-12-05 Improvements in electromagnetic wave signalling apparatus

Publications (1)

Publication Number Publication Date
GB159959A true GB159959A (en) 1921-03-07

Family

ID=10308435

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3048719A Expired GB159959A (en) 1919-12-05 1919-12-05 Improvements in electromagnetic wave signalling apparatus

Country Status (1)

Country Link
GB (1) GB159959A (en)

Similar Documents

Publication Publication Date Title
GB137271A (en) Improved method for receiving wireless signals
GB159959A (en) Improvements in electromagnetic wave signalling apparatus
GB242653A (en) Improvements in radio signalling systems
US1489158A (en) Arrangement for the audible receiving of undamped oscillations
US2579882A (en) Interference suppression in radio signaling systems
US1758940A (en) Means for separating undesired from desired electric currents
GB481526A (en) Improvements in or relating to radio receiving systems
GB360891A (en) Electrical frequency control systems
GB153690A (en) Improvements in or relating to wireless reception apparatus
US1539822A (en) Wave signaling system
GB258643A (en) Improvements in or relating to electrical means and systems for the transmission of sound
GB192090A (en) Improvements in electrical amplifying apparatus
GB293803A (en) Improvements in or relating to high frequency signalling systems
GB161449A (en) Improvements in electromagnetic wave receiving systems
US1144969A (en) Radio telegraphy and telephony receiver.
GB216308A (en) Improvements in or relating to wireless systems
GB157607A (en) Improvements in receivers for wireless telegraphy
SU538A1 (en) Radio receiver
SU61129A1 (en) Modulation Method
US1545502A (en) Radiotelephony
GB182107A (en) Method of reception of undamped oscillations and the corresponding devices
US1487301A (en) Signaling system
GB159683A (en) Improvements in or relating to wireless reception apparatus
GB191327480A (en) Improvements in Receivers for Wireless Telegraphy.
GB368597A (en) Improvements in or relating to apparatus for detecting frequency variations in alternating current