JPS5787629A - Single radio device - Google Patents
Single radio deviceInfo
- 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
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.
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)
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 |
-
1980
- 1980-11-20 JP JP55163833A patent/JPS5787629A/en active Granted
Cited By (3)
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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