JPH02113448U - - Google Patents

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Publication number
JPH02113448U
JPH02113448U JP2133589U JP2133589U JPH02113448U JP H02113448 U JPH02113448 U JP H02113448U JP 2133589 U JP2133589 U JP 2133589U JP 2133589 U JP2133589 U JP 2133589U JP H02113448 U JPH02113448 U JP H02113448U
Authority
JP
Japan
Prior art keywords
circuit
switch means
power supply
audio amplification
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
JP2133589U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP2133589U priority Critical patent/JPH02113448U/ja
Publication of JPH02113448U publication Critical patent/JPH02113448U/ja
Pending legal-status Critical Current

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Description

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

第1図はこの考案に係る無線受信機の実施例を
示すブロツク図、第2図は従来の実施例を示すブ
ロツク図である。 主な符号の説明、1……アンテナ、2……高周
波増幅部、3……音声増幅回路、4……スピーカ
、5……出力データ、6……電源部、7,9,1
0……スイツチ、8……スケルチ検出回路。
FIG. 1 is a block diagram showing an embodiment of a radio receiver according to this invention, and FIG. 2 is a block diagram showing a conventional embodiment. Explanation of main symbols, 1...Antenna, 2...High frequency amplification section, 3...Audio amplification circuit, 4...Speaker, 5...Output data, 6...Power supply section, 7, 9, 1
0...Switch, 8...Squelch detection circuit.

Claims (1)

【実用新案登録請求の範囲】 アンテナ入力を増幅する高周波増幅部と、この
高周波増幅部の出力に基づき動作するスケルチ検
出回路と、高周波増幅部の検波出力をスピーカに
導く音声増幅回路と、この音声増幅回路の電源回
路と、この電源回路の出力をオン・オフする第1
のスイツチ手段とからなり、アンテナ入力が予め
定められたレベル以下のときには前記スケルチ検
出回路は音声増幅回路への電源の供給を遮断する
ように構成した無線受信機において、 前記音声増幅回路の入力線路に第2のスイツチ
手段を設けると共に前記スケルチ検出回路が第1
のスイツチ手段もしくは第2のスイツチ手段を選
択して制御可能にした選択手段を設けたことを特
徴とする無線受信機。
[Claims for Utility Model Registration] A high-frequency amplification section that amplifies antenna input, a squelch detection circuit that operates based on the output of this high-frequency amplification section, an audio amplification circuit that guides the detected output of the high-frequency amplification section to a speaker, and A power supply circuit for the amplifier circuit and a first circuit that turns on and off the output of this power supply circuit.
a switch means of the audio amplification circuit, and the squelch detection circuit is configured to cut off power supply to the audio amplification circuit when the antenna input is below a predetermined level, the input line of the audio amplification circuit is provided with a second switch means, and the squelch detection circuit is connected to the first switch means.
1. A radio receiver comprising a selection means that can select and control either the first switch means or the second switch means.
JP2133589U 1989-02-28 1989-02-28 Pending JPH02113448U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2133589U JPH02113448U (en) 1989-02-28 1989-02-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2133589U JPH02113448U (en) 1989-02-28 1989-02-28

Publications (1)

Publication Number Publication Date
JPH02113448U true JPH02113448U (en) 1990-09-11

Family

ID=31238485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2133589U Pending JPH02113448U (en) 1989-02-28 1989-02-28

Country Status (1)

Country Link
JP (1) JPH02113448U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5380905A (en) * 1976-12-25 1978-07-17 Toshiba Corp Squelch device
JPS59119928A (en) * 1982-12-27 1984-07-11 Toshiba Corp Communication system of radio device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5380905A (en) * 1976-12-25 1978-07-17 Toshiba Corp Squelch device
JPS59119928A (en) * 1982-12-27 1984-07-11 Toshiba Corp Communication system of radio device

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