GB656482A - Installation for calling in wireless communication transmitting and receiving stations - Google Patents

Installation for calling in wireless communication transmitting and receiving stations

Info

Publication number
GB656482A
GB656482A GB12259/49D GB1225949D GB656482A GB 656482 A GB656482 A GB 656482A GB 12259/49 D GB12259/49 D GB 12259/49D GB 1225949 D GB1225949 D GB 1225949D GB 656482 A GB656482 A GB 656482A
Authority
GB
United Kingdom
Prior art keywords
noise
receiving
handset
circuit
call
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
GB12259/49D
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.)
Autophon AG
Original Assignee
Autophon AG
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 Autophon AG filed Critical Autophon AG
Publication of GB656482A publication Critical patent/GB656482A/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
    • H04B1/02—Transmitters
    • H04B1/03—Constructional details, e.g. casings, housings
    • H04B1/034—Portable transmitters

Landscapes

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

Abstract

656,482. Radio signalling; receiving circuits. AUTOPHON AKT.-GES. May 4, 1948, No. 12259. Convention date, May 30, 1947. Drawing to Specification. [Class 40 (v)] In a carrier telephony transmitting and receiving station comprising a noise-squelching circuit which blocks the output of a gain controlled amplifier during intervals between speech, when no carrier is transmitted, to suppress noise, replacement of the handset on its spring hook in preparation for any further call automatically opens a switch in the input circuit of the noise-squelching circuit to render it inoperative during calling pulses, and thereby increase the sensitivity of the receiver while being called. A second contact of the spring hook may at the same time disconnect the receiver audio amplifier from the handset or the station loud-speaker, but not from a remote call indicator, e.g. buzzer, during readiness for receiving a call. Frequency modulation may be used.
GB12259/49D 1947-05-30 1948-05-04 Installation for calling in wireless communication transmitting and receiving stations Expired GB656482A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH656482X 1947-05-30

Publications (1)

Publication Number Publication Date
GB656482A true GB656482A (en) 1951-08-22

Family

ID=4526535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12259/49D Expired GB656482A (en) 1947-05-30 1948-05-04 Installation for calling in wireless communication transmitting and receiving stations

Country Status (1)

Country Link
GB (1) GB656482A (en)

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