JPS5497311A - Rodio transmitter-receiver - Google Patents

Rodio transmitter-receiver

Info

Publication number
JPS5497311A
JPS5497311A JP489978A JP489978A JPS5497311A JP S5497311 A JPS5497311 A JP S5497311A JP 489978 A JP489978 A JP 489978A JP 489978 A JP489978 A JP 489978A JP S5497311 A JPS5497311 A JP S5497311A
Authority
JP
Japan
Prior art keywords
transmitter
power supply
power
circuit
receiver
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
JP489978A
Other languages
Japanese (ja)
Inventor
Katsuya Nakazato
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 JP489978A priority Critical patent/JPS5497311A/en
Publication of JPS5497311A publication Critical patent/JPS5497311A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/44—Arrangements for feeding power to a repeater along the transmission line

Landscapes

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

Abstract

PURPOSE:To turn off the power supply of a transmitter when a circuit is unused as to a microwave radio repeater which uses the transmission circuit only in a limited time zone in a day like a TV signal, etc. CONSTITUTION:When a reception power level received by receiver 2 is normal, squelch circuit 5 turns ON transmitting power supply 4 to operate transmitter 3 and when the reception power level becomes below a certain value, squelch circuit 5 turns OFF power supply 4 to cut off the power to transmitter 3. Therefore, when the communication circuit is unused, only the power consumption for the transmitter is required. As a result, the capacity of the secondary battery for the power-supply facility of the radio repeating station can be made small and the primary power supply can use a power supply of high reliability and long-period non-maintenance.
JP489978A 1978-01-19 1978-01-19 Rodio transmitter-receiver Pending JPS5497311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP489978A JPS5497311A (en) 1978-01-19 1978-01-19 Rodio transmitter-receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP489978A JPS5497311A (en) 1978-01-19 1978-01-19 Rodio transmitter-receiver

Publications (1)

Publication Number Publication Date
JPS5497311A true JPS5497311A (en) 1979-08-01

Family

ID=11596508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP489978A Pending JPS5497311A (en) 1978-01-19 1978-01-19 Rodio transmitter-receiver

Country Status (1)

Country Link
JP (1) JPS5497311A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046155A (en) * 1983-08-23 1985-03-12 Nec Corp Squelch signal generating circuit
JPS60132428A (en) * 1983-12-21 1985-07-15 Nippon Telegr & Teleph Corp <Ntt> Intermittent action control system of large power amplifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046155A (en) * 1983-08-23 1985-03-12 Nec Corp Squelch signal generating circuit
JPH0317263B2 (en) * 1983-08-23 1991-03-07 Nippon Electric Co
JPS60132428A (en) * 1983-12-21 1985-07-15 Nippon Telegr & Teleph Corp <Ntt> Intermittent action control system of large power amplifier

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