GB779012A - Improvements in or relating to radio station receiving apparatus - Google Patents

Improvements in or relating to radio station receiving apparatus

Info

Publication number
GB779012A
GB779012A GB5006/54A GB500654A GB779012A GB 779012 A GB779012 A GB 779012A GB 5006/54 A GB5006/54 A GB 5006/54A GB 500654 A GB500654 A GB 500654A GB 779012 A GB779012 A GB 779012A
Authority
GB
United Kingdom
Prior art keywords
contacts
relays
relay
receiver
receivers
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
GB5006/54A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB5006/54A priority Critical patent/GB779012A/en
Publication of GB779012A publication Critical patent/GB779012A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection
    • H04B7/082—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection selecting best antenna path
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

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

Abstract

779,012. Radio receiving systems. GENERAL ELECTRIC CO., Ltd., and FAIRBAIRN. E. P. Feb. 17, 1955 [Feb. 19, 1954], No. 5006/54. Class 40(5) A radio receiving station comprises two receivers X, Y with muting relay contacts 5, 6 opened by noise derived voltages in the absence of received signals but closed by received signals so as to energize relays X/6 and Y/7 and close contact switches X2, X3, Y2, Y3 in feed lines from the receivers to a common output L1, L2. The relays X/6 and Y/7 also close contacts X4, Y4 so that a line ST is earthed to call the operator at the distant exchange to which the lines L1, L2 are connected. A relay B is also energized but, in the event of failure of either one of the receivers X, Y the contacts X1, Y1 are in different positions and the slow to release relay B is released to close contact B1, whereupon either relay XA/6 or YA/6 is operated corresponding to which receiver is defective and a lamp 11 or 12 is lit and an alarm bell sounded at a control unit. The relays XA/6 or YA/6 become locked over a circuit having a reset key 9 and only on the defective receiver being repaired and the reset key temporarily operated is the control system again operative. In operation a defective receiver X or Y results in the muting relays releasing to close contacts 5 or 6 (the same position as when a signal is received by a normally working receiver) but the action of relays XA/6 or YA/6 opens contacts XA6 or YA6 to deenergize relay X or Y and open contacts X2, X3 or Y2, Y3.
GB5006/54A 1954-02-19 1954-02-19 Improvements in or relating to radio station receiving apparatus Expired GB779012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5006/54A GB779012A (en) 1954-02-19 1954-02-19 Improvements in or relating to radio station receiving apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5006/54A GB779012A (en) 1954-02-19 1954-02-19 Improvements in or relating to radio station receiving apparatus

Publications (1)

Publication Number Publication Date
GB779012A true GB779012A (en) 1957-07-17

Family

ID=9787966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5006/54A Expired GB779012A (en) 1954-02-19 1954-02-19 Improvements in or relating to radio station receiving apparatus

Country Status (1)

Country Link
GB (1) GB779012A (en)

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