JPS5744341A - Antenna-direction indication device of moving tv relay transmitting and receiving device - Google Patents

Antenna-direction indication device of moving tv relay transmitting and receiving device

Info

Publication number
JPS5744341A
JPS5744341A JP11944880A JP11944880A JPS5744341A JP S5744341 A JPS5744341 A JP S5744341A JP 11944880 A JP11944880 A JP 11944880A JP 11944880 A JP11944880 A JP 11944880A JP S5744341 A JPS5744341 A JP S5744341A
Authority
JP
Japan
Prior art keywords
signal
audio frequency
reception level
antenna
moving
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.)
Pending
Application number
JP11944880A
Other languages
Japanese (ja)
Inventor
Hiroshi Kawamoto
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11944880A priority Critical patent/JPS5744341A/en
Publication of JPS5744341A publication Critical patent/JPS5744341A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising

Landscapes

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

Abstract

PURPOSE:To discriminate the reception level of a reception side easily at a transmission side by sending the reception level of the reception side to the transmission side as an audio frequency signal which corresponds to it. CONSTITUTION:At the side of a relay receiver 1 which receives a TV signal from a relay tranamitter 7, a DC signal S proportional to a reception level is generated and an audio frequency signal having a frequency proportional to an input DC voltage is generated by an audio frequency generator 4 to drive a speaker with the audio frequency signal. A sound from the speaker is inputted to the handset of a circuit (5-6) for communication. At a transmitter side for relaying, an audio signal transmission through communication circuit is listened to know the reception level of the relay receiver, thereby adjusting a transmitting antenna 8 for relaying.
JP11944880A 1980-08-29 1980-08-29 Antenna-direction indication device of moving tv relay transmitting and receiving device Pending JPS5744341A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11944880A JPS5744341A (en) 1980-08-29 1980-08-29 Antenna-direction indication device of moving tv relay transmitting and receiving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11944880A JPS5744341A (en) 1980-08-29 1980-08-29 Antenna-direction indication device of moving tv relay transmitting and receiving device

Publications (1)

Publication Number Publication Date
JPS5744341A true JPS5744341A (en) 1982-03-12

Family

ID=14761642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11944880A Pending JPS5744341A (en) 1980-08-29 1980-08-29 Antenna-direction indication device of moving tv relay transmitting and receiving device

Country Status (1)

Country Link
JP (1) JPS5744341A (en)

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