JPS5877936U - Radio audio output control circuit - Google Patents

Radio audio output control circuit

Info

Publication number
JPS5877936U
JPS5877936U JP1981172102U JP17210281U JPS5877936U JP S5877936 U JPS5877936 U JP S5877936U JP 1981172102 U JP1981172102 U JP 1981172102U JP 17210281 U JP17210281 U JP 17210281U JP S5877936 U JPS5877936 U JP S5877936U
Authority
JP
Japan
Prior art keywords
control circuit
circuit
audio output
output control
output
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
Application number
JP1981172102U
Other languages
Japanese (ja)
Inventor
正樹 大西
Original Assignee
日立電子株式会社
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 日立電子株式会社 filed Critical 日立電子株式会社
Priority to JP1981172102U priority Critical patent/JPS5877936U/en
Publication of JPS5877936U publication Critical patent/JPS5877936U/en
Pending legal-status Critical Current

Links

Landscapes

  • Transceivers (AREA)
  • Noise Elimination (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (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]

図は本考案の一実施例を示す無線機の音声出力制御回路
のブロック図である。 １：マイクロホン、２：増幅器、３：検波器、４ニ一ス
イツチ回路、５：復調回路、６：トーンコントロール回
路、７：音声増幅器、８：スピーカ、９：スケルチ回路
。The figure is a block diagram of an audio output control circuit of a radio device showing an embodiment of the present invention. 1: Microphone, 2: Amplifier, 3: Detector, 4-way switch circuit, 5: Demodulation circuit, 6: Tone control circuit, 7: Audio amplifier, 8: Speaker, 9: Squelch circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ブレストーク方式の無線機において、音声出力回路にト
ーンコントロール回路を設け、またマイクロホンの出力
回路に周囲雑音のレベルを検出す８検波器と、この検波
器の出力によって前記トーンコントロール回路を切替え
るスイッチ回路を設け、待受時に周囲雑音のレベルによ
って音声出力回路の周波数特性を自動的に切替えると共
に、受（８時にスケルチ回路の出力によって前記スイッ
チ回路の状態をホールドするようにしたことを特徴とす
る無線機の音声出力制御回路。In a breathtalk type radio device, a tone control circuit is provided in the audio output circuit, and an 8-wavelength detector for detecting the level of ambient noise is installed in the microphone output circuit, and a switch circuit that switches the tone control circuit based on the output of this detector. and automatically switches the frequency characteristics of the audio output circuit depending on the level of ambient noise during standby, and holds the state of the switch circuit by the output of the squelch circuit at 8 o'clock. The machine's audio output control circuit.
JP1981172102U 1981-11-20 1981-11-20 Radio audio output control circuit Pending JPS5877936U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1981172102U JPS5877936U (en) 1981-11-20 1981-11-20 Radio audio output control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1981172102U JPS5877936U (en) 1981-11-20 1981-11-20 Radio audio output control circuit

Publications (1)

Publication Number Publication Date
JPS5877936U true JPS5877936U (en) 1983-05-26

Family

ID=29964009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1981172102U Pending JPS5877936U (en) 1981-11-20 1981-11-20 Radio audio output control circuit

Country Status (1)

Country Link
JP (1) JPS5877936U (en)

Similar Documents

Publication Publication Date Title
JPS5877936U (en) Radio audio output control circuit
JPS5911540U (en) squelch circuit
JPS5865698U (en) tape recorder with radio
JPS5854142U (en) audio output device
JPH0249238U (en)
JPS6312918U (en)
JPS5933345U (en) transceiver
JPS6129523U (en) Muting circuit for acoustic transmission system
JPS5952738U (en) Wireless microphone with standby switch
JPS5816920U (en) audio output device
JPS6035654U (en) squelch circuit
JPS60108052U (en) Group number selection receiving device
JPS58194548U (en) radio receiver
JPS59183053U (en) In-vehicle radio speaker circuit
JPS5994456U (en) wireless communication device
JPS5952713U (en) Muting circuit
JPS5972049U (en) automatic switching device
JPS59187245U (en) tuning device
JPS61128844U (en)
JPS6079824U (en) Automatic volume control circuit for radio equipment
JPS5969544U (en) AM receiving device
JPS5866743U (en) receiving device
JPS5834445U (en) noise squelch circuit
JPS6147515U (en) amplifier
JPS6052744U (en) control circuit