JPS5683138A - Squeltch system - Google Patents

Squeltch system

Info

Publication number
JPS5683138A
JPS5683138A JP16015979A JP16015979A JPS5683138A JP S5683138 A JPS5683138 A JP S5683138A JP 16015979 A JP16015979 A JP 16015979A JP 16015979 A JP16015979 A JP 16015979A JP S5683138 A JPS5683138 A JP S5683138A
Authority
JP
Japan
Prior art keywords
output
section
radio station
station
signal
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.)
Granted
Application number
JP16015979A
Other languages
Japanese (ja)
Other versions
JPS5922422B2 (en
Inventor
Akinori Tomo
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP54160159A priority Critical patent/JPS5922422B2/en
Publication of JPS5683138A publication Critical patent/JPS5683138A/en
Publication of JPS5922422B2 publication Critical patent/JPS5922422B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/005—Control by a pilot signal

Abstract

PURPOSE:To improve the S/N for the communication through a single radio channel with a simple constitution and to enable various controls, by transmitting the control/status signal and the signal designating the reception radio station from a transmission radio station as the tone signal in a short time and processing the signals at the radio station. CONSTITUTION:When a plurality of radio stations make communication by using a single radio channel, the control/status signal and the signal designating the reception radio station from the transmission radio station are transmitted as the tone signal in a short time. The signals from the transmission station are received and demodulated at the reception section 2 of the receiving station, the tone signal is detected at the tone signal detection section 5, and the detected output is set to FF6. Further, the noise level receiving electromagnetic waves at the noise squeltch section 4 which is smaller at nonreception, is detected and the output is fed to the reset terminal of FF6. Further, the AND condition of the outputs from FF6 and the squeltch section 4 is taken at the AND circuit 7, the analog switch section 3 is controlled with the output of the circuit 7, and the S/N of the demodulated voice output is improved for output.
JP54160159A 1979-12-10 1979-12-10 Squelch method Expired JPS5922422B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54160159A JPS5922422B2 (en) 1979-12-10 1979-12-10 Squelch method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54160159A JPS5922422B2 (en) 1979-12-10 1979-12-10 Squelch method

Publications (2)

Publication Number Publication Date
JPS5683138A true JPS5683138A (en) 1981-07-07
JPS5922422B2 JPS5922422B2 (en) 1984-05-26

Family

ID=15709136

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54160159A Expired JPS5922422B2 (en) 1979-12-10 1979-12-10 Squelch method

Country Status (1)

Country Link
JP (1) JPS5922422B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6114548U (en) * 1984-06-26 1986-01-28 三洋電機株式会社 cordless telephone

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965705A (en) * 1972-10-26 1974-06-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965705A (en) * 1972-10-26 1974-06-26

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6114548U (en) * 1984-06-26 1986-01-28 三洋電機株式会社 cordless telephone

Also Published As

Publication number Publication date
JPS5922422B2 (en) 1984-05-26

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