GB902031A - Improvements in or relating to radio transmitter control systems - Google Patents

Improvements in or relating to radio transmitter control systems

Info

Publication number
GB902031A
GB902031A GB92560A GB92560A GB902031A GB 902031 A GB902031 A GB 902031A GB 92560 A GB92560 A GB 92560A GB 92560 A GB92560 A GB 92560A GB 902031 A GB902031 A GB 902031A
Authority
GB
United Kingdom
Prior art keywords
station
stations
fixed
route
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
GB92560A
Inventor
Miloslav Brachtl
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.)
Tesla AS
Original Assignee
Tesla AS
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 Tesla AS filed Critical Tesla AS
Priority to GB92560A priority Critical patent/GB902031A/en
Priority claimed from CH89661A external-priority patent/CH385298A/en
Publication of GB902031A publication Critical patent/GB902031A/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
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

Landscapes

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

Abstract

902,031. Radio signalling. TESLA NARODNI PODNIK. Jan. 11, 1960, No. 925/60. Class 40 (5). A radio telephone system comprises a control station connected by four line wires to a number of fixed radio transmitting and receiving stations sited sequentially along a traffic route, e.g. a railway line or trunk road, and one or more mobile radio stations adapted to travel along the said route. The operative mobile station is selected in known manner by audio-frequency selective calling and as it traverses the route only the fixed station receiving from it the greatest R.F. signal is energized, the others being automatically muted by an audio frequency blocking tone. The embodiment described comprises a control station " D," mobile station " M " and fixed stations " A," " B," " C " along the route and connected to " D " by four lines. The automatic muting of each fixed station is effected by receivers 35 which receive an audio frequency. When the R.F. voltage at some part of the receiver reaches a given value a relay P is energized and contact " p " operates a slow-acting relay A; whose contacts al, a2 connect A.F. output to the line, a3 also operating together with v2 to operate relay B. The delay times of relays A differ at each fixed station, to prevent simultaneous operation by two or more stations each responding to a momentarily identical R.F. field. Operation of relay B disconnects contacts b1, b2 from the input of receiver 35 and applies them to blocking signal generator 38, whose output blocks all other auxiliary signal receivers 35 at the other fixed stations. The blocking tone is rejected at the main station by a filter 29.
GB92560A 1960-01-11 1960-01-11 Improvements in or relating to radio transmitter control systems Expired GB902031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB92560A GB902031A (en) 1960-01-11 1960-01-11 Improvements in or relating to radio transmitter control systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB92560A GB902031A (en) 1960-01-11 1960-01-11 Improvements in or relating to radio transmitter control systems
CH89661A CH385298A (en) 1961-01-26 1961-01-26 Circuit arrangement for controlling at least two coincidentally working transmitters in a dispatcher system on a traffic route

Publications (1)

Publication Number Publication Date
GB902031A true GB902031A (en) 1962-07-25

Family

ID=25686038

Family Applications (1)

Application Number Title Priority Date Filing Date
GB92560A Expired GB902031A (en) 1960-01-11 1960-01-11 Improvements in or relating to radio transmitter control systems

Country Status (1)

Country Link
GB (1) GB902031A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210665A (en) * 1962-12-31 1965-10-05 Gen Electric Mobile radio with timing circuit for automatically energizing the transmitter upon receipt of a call
GB2291766A (en) * 1994-06-30 1996-01-31 Motorola Ltd User controlled handoff
US10998730B1 (en) 2019-04-26 2021-05-04 NeoVolta, Inc. Adaptive solar power battery storage system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210665A (en) * 1962-12-31 1965-10-05 Gen Electric Mobile radio with timing circuit for automatically energizing the transmitter upon receipt of a call
GB2291766A (en) * 1994-06-30 1996-01-31 Motorola Ltd User controlled handoff
US10998730B1 (en) 2019-04-26 2021-05-04 NeoVolta, Inc. Adaptive solar power battery storage system
US11605952B1 (en) 2019-04-26 2023-03-14 NeoVolta, Inc. Adaptive solar power battery storage system

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