JPS5816942U - Squelch circuit in radio equipment - Google Patents
Squelch circuit in radio equipmentInfo
- Publication number
- JPS5816942U JPS5816942U JP11006381U JP11006381U JPS5816942U JP S5816942 U JPS5816942 U JP S5816942U JP 11006381 U JP11006381 U JP 11006381U JP 11006381 U JP11006381 U JP 11006381U JP S5816942 U JPS5816942 U JP S5816942U
- Authority
- JP
- Japan
- Prior art keywords
- squelch circuit
- circuit
- squelch
- level
- utility
- 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
- Noise Elimination (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のスケルチ回路のブロック図、第一０図は
本考案によるスケルチ回路の一実施例を示すブロック図
、第３図は電圧比較器のヒステリシス特性図である。
１．１０・・・入力端子、２．１３・・・バンドパスフ
ィルタ回路、３．１４・・・検波回路、４．１６・・・
スイッチング回路、５．１１・・・オーディオ回路、６
゜１２・・・スピーカ、１７．１８・・・ダイオード、
１９・・・抵抗、２０・・・可変抵抗、２１・・・コン
デンサ、２２・・・スケルチ回路。FIG. 1 is a block diagram of a conventional squelch circuit, FIG. 10 is a block diagram showing an embodiment of the squelch circuit according to the present invention, and FIG. 3 is a hysteresis characteristic diagram of a voltage comparator. 1.10...Input terminal, 2.13...Band pass filter circuit, 3.14...Detection circuit, 4.16...
Switching circuit, 5.11...Audio circuit, 6
゜12...Speaker, 17.18...Diode,
19...Resistor, 20...Variable resistor, 21...Capacitor, 22...Squelch circuit.
Claims (3)
レベルが一定以上か否かによってオン、オフ制御するよ
うにしたスケルチ回路において、該スケルチ回路中に、
該識別信号の検波回路の検波出力で作動し、その作動の
ためのオンレベルとオフレベルにヒステリシス特性を有
する電圧比較器を設けてなることを特徴とする無線機に
おけるスケルチ回路。(1) In a squelch circuit that is controlled to turn on and off depending on whether the electric field strength level of the own station's identification signal contained in the received signal is above a certain level, the squelch circuit includes:
1. A squelch circuit for a radio device, comprising a voltage comparator which is operated by the detection output of the detection circuit for the identification signal and has a hysteresis characteristic between an on level and an off level for the operation.
波回路はダイオード、抵抗、可変抵抗、コンデンサから
なり、検波出力レベルを可変堺抗により可変することが
できるようにした無線機におけるスケルチ回路。(2) Scope of Utility Model Registration Claims 1. In claim 1, the detection circuit is a squelch circuit in a radio device, which consists of a diode, a resistor, a variable resistor, and a capacitor, and the detection output level can be varied by a variable resistor. .
に３いて、該識別信号はトーン信号からなり、スケルチ
回路は自局に対応したトーン信号をとらえる、トーンス
ケルチバンドパスフィルタ回路を具備してなる無線機に
おけるスケルチ回路。(3) Utility Model Registration According to claim 1 or 2, the identification signal consists of a tone signal, and the squelch circuit includes a tone squelch band-pass filter circuit that captures the tone signal corresponding to the local station. Squelch circuit in radio equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11006381U JPS5816942U (en) | 1981-07-24 | 1981-07-24 | Squelch circuit in radio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11006381U JPS5816942U (en) | 1981-07-24 | 1981-07-24 | Squelch circuit in radio equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5816942U true JPS5816942U (en) | 1983-02-02 |
Family
ID=29904422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11006381U Pending JPS5816942U (en) | 1981-07-24 | 1981-07-24 | Squelch circuit in radio equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5816942U (en) |
-
1981
- 1981-07-24 JP JP11006381U patent/JPS5816942U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5816942U (en) | Squelch circuit in radio equipment | |
| JPS5816943U (en) | Squelch circuit in radio equipment | |
| JPS619968U (en) | Television receiver audio switching circuit | |
| JPS5933345U (en) | transceiver | |
| JPS5972049U (en) | automatic switching device | |
| JPS59183053U (en) | In-vehicle radio speaker circuit | |
| JPS58191707U (en) | Muting circuit for audio equipment | |
| JPS5882050U (en) | active antenna device | |
| JPS5899945U (en) | Day emphasis circuit switching device | |
| JPS601094U (en) | speaker device | |
| JPS5959016U (en) | Audio output circuit protection device | |
| JPS5914435U (en) | Radio receiver intermediate frequency bandwidth switching circuit | |
| JPS58507U (en) | amplifier circuit | |
| JPS6085430U (en) | fm radio receiver | |
| JPS5933352U (en) | Wristwatch with individual selection calling device | |
| JPS58111539U (en) | Antenna device in space diversity receiver | |
| JPS59154945U (en) | FM receiver | |
| JPS6039536U (en) | Sound switching device | |
| JPS601065U (en) | amplitude modulation stereo receiver | |
| JPS60114450U (en) | car radio | |
| JPS58138438U (en) | radio receiver | |
| JPS60158344U (en) | receiving device | |
| JPS6025255U (en) | communication device | |
| JPS5899929U (en) | receiving device | |
| JPS5866771U (en) | Audio detection circuit |