JPS59180541U - Squelch adjustment circuit - Google Patents
Squelch adjustment circuitInfo
- Publication number
- JPS59180541U JPS59180541U JP7406983U JP7406983U JPS59180541U JP S59180541 U JPS59180541 U JP S59180541U JP 7406983 U JP7406983 U JP 7406983U JP 7406983 U JP7406983 U JP 7406983U JP S59180541 U JPS59180541 U JP S59180541U
- Authority
- JP
- Japan
- Prior art keywords
- squelch
- adjustment circuit
- variable resistor
- characteristic setting
- movable piece
- 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) [Summary] 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調整回路を用いた無線通信機の
ブロック図、第2図は可変抵抗器の特性図、第3図は本
考案によるスケルチ調整回路の−′実施例を示す電気回
路図、第4図、第5図および第6図はそれぞれスケルチ
回路の抵抗を可変して多様に設定した特性図である。
1・・・アンテナ、2・・・高周波増幅回路、3・・・
局部発振回路、4・・・混合回路、5・・・中間周波増
幅回路、6・・・弁別回路、7・・・スケルチ回路、8
・・・音声増幅回路、9・・・スピーカ、10・・・可
変抵抗器、11・・・入力端子、12.13・・・特性
設定用抵抗、14・・・可動片、15・・・接続点。Fig. 1 is a block diagram of a wireless communication device using a conventional squelch adjustment circuit, Fig. 2 is a characteristic diagram of a variable resistor, and Fig. 3 is an electric circuit diagram showing an embodiment of the squelch adjustment circuit according to the present invention. , FIG. 4, FIG. 5, and FIG. 6 are characteristic diagrams in which various settings are made by varying the resistance of the squelch circuit. 1... Antenna, 2... High frequency amplification circuit, 3...
Local oscillation circuit, 4... Mixing circuit, 5... Intermediate frequency amplification circuit, 6... Discrimination circuit, 7... Squelch circuit, 8
... Audio amplification circuit, 9 ... Speaker, 10 ... Variable resistor, 11 ... Input terminal, 12.13 ... Characteristic setting resistor, 14 ... Movable piece, 15 ... connection point.
Claims (2)
可動片によって抵抗値を可変して調整するようにしたも
のにおいて、前記可変抵抗器の両端間に、特性設定用の
少なくとも2個の抵抗の直列回路を結合し、この特性設
定用の抵抗の接続点と前記可変抵抗器の可動片を結合し
てなることを特徴とするスケルチ調整回路。(1) In a device in which the squelch operating point is adjusted by varying the resistance value with a movable piece linked to a knob of a variable resistor, at least two resistors for characteristic setting are installed between both ends of the variable resistor. 1. A squelch adjustment circuit comprising: a series circuit connected in series, and a connection point of this characteristic setting resistor connected to a movable piece of the variable resistor.
抗値のものを選択的に使用するようにした実用新案登録
請求の範囲第1項記載のスケルチ調整回路。(2) The squelch adjustment circuit according to claim 1, wherein the two characteristic setting resistors have resistance values ranging from approximately zero to infinity.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7406983U JPS59180541U (en) | 1983-05-18 | 1983-05-18 | Squelch adjustment circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7406983U JPS59180541U (en) | 1983-05-18 | 1983-05-18 | Squelch adjustment circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59180541U true JPS59180541U (en) | 1984-12-03 |
Family
ID=30204174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7406983U Pending JPS59180541U (en) | 1983-05-18 | 1983-05-18 | Squelch adjustment circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59180541U (en) |
-
1983
- 1983-05-18 JP JP7406983U patent/JPS59180541U/en active Pending
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