JPS59161752U - FM reception input detection circuit - Google Patents

FM reception input detection circuit

Info

Publication number
JPS59161752U
JPS59161752U JP5644883U JP5644883U JPS59161752U JP S59161752 U JPS59161752 U JP S59161752U JP 5644883 U JP5644883 U JP 5644883U JP 5644883 U JP5644883 U JP 5644883U JP S59161752 U JPS59161752 U JP S59161752U
Authority
JP
Japan
Prior art keywords
detection
signal
frequency
reception input
detection circuit
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
JP5644883U
Other languages
Japanese (ja)
Other versions
JPH024527Y2 (en
Inventor
真野　卓己
Original Assignee
アイコム株式会社
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 アイコム株式会社 filed Critical アイコム株式会社
Priority to JP5644883U priority Critical patent/JPS59161752U/en
Publication of JPS59161752U publication Critical patent/JPS59161752U/en
Application granted granted Critical
Publication of JPH024527Y2 publication Critical patent/JPH024527Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Noise Elimination (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (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

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案のＦＭ受信入力検出回路の一実施例の
結線図、第２図はスケルチ回路が動作する信号入力レベ
ルと第１図の第２ボリウムの抵抗値の割合との関係を示
す曲線図、第３図は受信帯域と第１図の第１ボリウムの
抵抗値の割合との関係を示す曲線図である。 ｃｐ・・・信号検出部、ＶＲｌ・・・検出範囲設定用ボ
リウム、ＶＦ６・・・動作点設定用ボリウム、Ａ・・・
アンド回路、Ｍ・・・ミューティング回路。Figure 1 is a wiring diagram of one embodiment of the FM reception input detection circuit of this invention, and Figure 2 shows the relationship between the signal input level at which the squelch circuit operates and the ratio of the resistance value of the second volume in Figure 1. FIG. 3 is a curve diagram showing the relationship between the receiving band and the ratio of the resistance value of the first volume in FIG. 1. cp...Signal detection section, VRl...Volume for detection range setting, VF6...Volume for operating point setting, A...
AND circuit, M...muting circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ＦＭ検波出力の周波数弁別特性における中心周波数から
所要の離調周波数までの周波数範囲に相当する信号レベ
ルのＦＭ検波出力を検出する信号検出部と、ノイズスケ
ルチの動作点設定用ボリウムに連動して上記信号検出部
の信号検出レベルを可変する検出範囲設定用ボリウムと
、上記信号検出部の検出信号とノイズスケルチのミュー
ティング出力とが入力されるアンド回路とを具備して成
ることを特徴とするＦＭ受信入力検出回路。A signal detection section that detects the FM detection output at a signal level corresponding to the frequency range from the center frequency to the required detuning frequency in the frequency discrimination characteristic of the FM detection output, and the above-mentioned in conjunction with the noise squelch operating point setting volume. An FM characterized by comprising: a detection range setting volume that varies the signal detection level of the signal detection section; and an AND circuit into which the detection signal of the signal detection section and the muting output of the noise squelch are input. Reception input detection circuit.
JP5644883U 1983-04-14 1983-04-14 FM reception input detection circuit Granted JPS59161752U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5644883U JPS59161752U (en) 1983-04-14 1983-04-14 FM reception input detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5644883U JPS59161752U (en) 1983-04-14 1983-04-14 FM reception input detection circuit

Publications (2)

Publication Number Publication Date
JPS59161752U true JPS59161752U (en) 1984-10-30
JPH024527Y2 JPH024527Y2 (en) 1990-02-02

Family

ID=30186769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5644883U Granted JPS59161752U (en) 1983-04-14 1983-04-14 FM reception input detection circuit

Country Status (1)

Country Link
JP (1) JPS59161752U (en)

Also Published As

Publication number Publication date
JPH024527Y2 (en) 1990-02-02

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