GB100841A - Improvements in Automatic Switching Devices for Wireless Telephone Systems. - Google Patents

Improvements in Automatic Switching Devices for Wireless Telephone Systems.

Info

Publication number
GB100841A
GB100841A GB9349/16A GB934916A GB100841A GB 100841 A GB100841 A GB 100841A GB 9349/16 A GB9349/16 A GB 9349/16A GB 934916 A GB934916 A GB 934916A GB 100841 A GB100841 A GB 100841A
Authority
GB
United Kingdom
Prior art keywords
switching devices
wireless telephone
automatic switching
telephone systems
relay
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
GB9349/16A
Inventor
Lee De Forest
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 GB100841A publication Critical patent/GB100841A/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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H04B1/46—Transmit/receive switching by voice-frequency signals; by pilot signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Telephone Set Structure (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)

Abstract

100,841. Forest, L. de. July 7, 1915, [Convention date]. Microphones; mouthpieces.-In a system of wireless telephony, a contact F, G arranged within the mouthpiece is influenced by the sound waves to close the circuit of a relay S' which disconnects the antenna from the receiving-circuit X and connects it to the transmitting-apparatus. In a modification, the relay S' is controlled by a contact closed by mercury in a U-shaped capillary tube opening into the transmitter mouthpiece.
GB9349/16A 1915-07-07 1916-07-03 Improvements in Automatic Switching Devices for Wireless Telephone Systems. Expired GB100841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US369712XA 1915-07-07 1915-07-07

Publications (1)

Publication Number Publication Date
GB100841A true GB100841A (en) 1917-01-18

Family

ID=21891719

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9349/16A Expired GB100841A (en) 1915-07-07 1916-07-03 Improvements in Automatic Switching Devices for Wireless Telephone Systems.

Country Status (3)

Country Link
DE (1) DE369712C (en)
FR (1) FR492017A (en)
GB (1) GB100841A (en)

Also Published As

Publication number Publication date
DE369712C (en) 1923-02-22
FR492017A (en)

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