JPS58107645U - Call monitor circuit - Google Patents
Call monitor circuitInfo
- Publication number
- JPS58107645U JPS58107645U JP1982002720U JP272082U JPS58107645U JP S58107645 U JPS58107645 U JP S58107645U JP 1982002720 U JP1982002720 U JP 1982002720U JP 272082 U JP272082 U JP 272082U JP S58107645 U JPS58107645 U JP S58107645U
- Authority
- JP
- Japan
- Prior art keywords
- section
- output
- tone
- squelch
- station
- 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
Links
Landscapes
- Transceivers (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の話中ランプ・トーンスケルチ制御回路、
第２図は本考案の一実施例の話中ランプ・トーンスケル
チ制御回路である。
１は中間周波入力端子、２は振幅制限部、３は復調部、
４は低周波増幅部、５はノイズスケルチ部、６はトーン
スケルチ部、６−１は電子リレー接点、７は受信機出力
端子、８は話中ランプ、９は他局判定回路（ＡＮＤゲー
ト回路）、９−１． ９−２は電子リレー接点、１０は
警報音発生器。Figure 1 shows a conventional busy lamp/tone squelch control circuit.
FIG. 2 shows a busy lamp/tone squelch control circuit according to an embodiment of the present invention. 1 is an intermediate frequency input terminal, 2 is an amplitude limiter, 3 is a demodulator,
4 is a low frequency amplification section, 5 is a noise squelch section, 6 is a tone squelch section, 6-1 is an electronic relay contact, 7 is a receiver output terminal, 8 is a busy lamp, 9 is an other station determination circuit (AND gate circuit) , 9-1. 9-2 is an electronic relay contact, and 10 is an alarm sound generator.
Claims (1)
イズスケルチ部及び自局あてのトーンの検出を行なうト
ーンスケルチ部と、トーンスケルチ部の出力により動作
しスピーカに接続される低周波増幅部と、復調部の出力
と低周波増幅部の入力との結合を制御するスイッチとを
有するトーンスケルチ付車載無線機の通話中モニター回
路において、ノイズスケルチ部の動作とトーンスケルチ
部の不動作により他局運用中を判定する他局判定回路と
、該回路の出力により起動される警報音発生器とが具備
され、前記スイッチにより前記他局判定回路の出力に従
って前記低周波増幅部の入力４を前記警報音発生器の出
力と前記復調部の出力の間で切換え、他局運用中を警報
音でモニターすることを特徴とする通話中モニター回路
。a demodulation section that demodulates a radio signal; a noise squelch section connected to the output thereof; a tone squelch section that detects a tone directed to the local station; and a low frequency amplification section operated by the output of the tone squelch section and connected to a speaker; In the call monitor circuit of an in-vehicle radio equipped with a tone squelch, which has a switch that controls the coupling between the output of the demodulator and the input of the low-frequency amplification section, operation of the noise squelch section and non-operation of the tone squelch section makes it possible to detect when another station is in operation. It is equipped with an other station determination circuit for making a determination and an alarm sound generator activated by the output of the circuit, and the switch causes the input 4 of the low frequency amplification section to be connected to the alarm sound generator according to the output of the other station determination circuit. and the output of the demodulator, and monitors the operation of another station with an alarm sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982002720U JPS58107645U (en) | 1982-01-14 | 1982-01-14 | Call monitor circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982002720U JPS58107645U (en) | 1982-01-14 | 1982-01-14 | Call monitor circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58107645U true JPS58107645U (en) | 1983-07-22 |
Family
ID=30015682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982002720U Pending JPS58107645U (en) | 1982-01-14 | 1982-01-14 | Call monitor circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58107645U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013098684A (en) * | 2011-10-31 | 2013-05-20 | Icom Inc | Wireless apparatus and computer program |
-
1982
- 1982-01-14 JP JP1982002720U patent/JPS58107645U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013098684A (en) * | 2011-10-31 | 2013-05-20 | Icom Inc | Wireless apparatus and computer program |
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