JPS5787629A - Single radio device - Google Patents

Single radio device

Info

Publication number
JPS5787629A
JPS5787629A JP55163833A JP16383380A JPS5787629A JP S5787629 A JPS5787629 A JP S5787629A JP 55163833 A JP55163833 A JP 55163833A JP 16383380 A JP16383380 A JP 16383380A JP S5787629 A JPS5787629 A JP S5787629A
Authority
JP
Japan
Prior art keywords
output
gate
state
group
tone
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
JP55163833A
Other languages
Japanese (ja)
Other versions
JPS6312411B2 (en
Inventor
Kunio Hibino
Akio Nakanishi
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 JP55163833A priority Critical patent/JPS5787629A/en
Publication of JPS5787629A publication Critical patent/JPS5787629A/en
Publication of JPS6312411B2 publication Critical patent/JPS6312411B2/ja
Granted 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
    • H04B1/44—Transmit/receive switching

Landscapes

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

Abstract

PURPOSE:To prevent the generation of cross talk, by blocking the operation of a transmitter even in a call operation at busy time of other group and informing the busy state to an operator through the generation of alarm tone. CONSTITUTION:A noise squelch circuit 18 produces an output ''1'' when a carrier wave input is present and generates ''0'' at the other state. A tone squelch circuit 19 produces an output ''1'' when it receives tone from the station of the group and generates an output ''0'' in the other case. During the communication of other group, the output of the gate 20 is at ''1'' and the gate 21 is in a waiting state, then if a press-talk switch 11 turns on, the output of the gate 21 is at ''1'', an alarm generator 22 is operative and an alarm signal is given to a speaker 17. On the other hand, since the gate 12 is at inhibiting state, no transmitter 14 is operated.
JP55163833A 1980-11-20 1980-11-20 Single radio device Granted JPS5787629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55163833A JPS5787629A (en) 1980-11-20 1980-11-20 Single radio device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55163833A JPS5787629A (en) 1980-11-20 1980-11-20 Single radio device

Publications (2)

Publication Number Publication Date
JPS5787629A true JPS5787629A (en) 1982-06-01
JPS6312411B2 JPS6312411B2 (en) 1988-03-18

Family

ID=15781604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55163833A Granted JPS5787629A (en) 1980-11-20 1980-11-20 Single radio device

Country Status (1)

Country Link
JP (1) JPS5787629A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007251526A (en) * 2006-03-15 2007-09-27 Hitachi Kokusai Electric Inc Wireless communication device
JP2016012764A (en) * 2014-06-27 2016-01-21 アイコム株式会社 Radio communication equipment and sound volume adjustment method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007251526A (en) * 2006-03-15 2007-09-27 Hitachi Kokusai Electric Inc Wireless communication device
JP4668819B2 (en) * 2006-03-15 2011-04-13 株式会社日立国際電気 Wireless communication device
JP2016012764A (en) * 2014-06-27 2016-01-21 アイコム株式会社 Radio communication equipment and sound volume adjustment method thereof

Also Published As

Publication number Publication date
JPS6312411B2 (en) 1988-03-18

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