JPS5861555U - Reception monitor device - Google Patents
Reception monitor deviceInfo
- Publication number
- JPS5861555U JPS5861555U JP15558881U JP15558881U JPS5861555U JP S5861555 U JPS5861555 U JP S5861555U JP 15558881 U JP15558881 U JP 15558881U JP 15558881 U JP15558881 U JP 15558881U JP S5861555 U JPS5861555 U JP S5861555U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- squelch
- switch circuit
- transmission switch
- 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
- Mobile Radio Communication Systems (AREA)
- Transceivers (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
図面は本考案による受信モニタ装置の一実施例を示すブ
ロック図である。
１はアンテナ、２・・・アンテナ切換回路 ３１１＠−
高周波増幅回路、４・・・混合回路、５・・・中間周波
増幅回路、６・・・検波回路、７・・・プリアンプ、８
・・・スイッチ回路、９・・・パワーアンプ、１０・・
・スピーカ、１１・・・トーンスケルチ回路、１２・・
・送信スイッチ回路、１３・・・マイクロホン、１４・
・・マイクロアン − ゛、 プ、１５・・・変調回
路、１６・・・メインアンプ、１７・・・発振回路、１
８・・・ノイズスケルチ回路、１９・・・ノイズアンプ
、２０・・・検波回路、２１・・・スイッチング回路、
２２・−・アンドゲート、２３・・・発振回路。The drawing is a block diagram showing an embodiment of a reception monitoring device according to the present invention. 1 is an antenna, 2... antenna switching circuit 311@-
High frequency amplification circuit, 4... Mixing circuit, 5... Intermediate frequency amplification circuit, 6... Detection circuit, 7... Preamplifier, 8
...Switch circuit, 9...Power amplifier, 10...
・Speaker, 11... Tone squelch circuit, 12...
・Transmission switch circuit, 13...Microphone, 14・
...Micro amplifier, 15...Modulation circuit, 16...Main amplifier, 17...Oscillation circuit, 1
8... Noise squelch circuit, 19... Noise amplifier, 20... Detection circuit, 21... Switching circuit,
22...And gate, 23...Oscillation circuit.
Claims (2)
をもって通信し、かつその通信信号中に判別用の連続ト
ーン信号を有し、この連続トーン信号で特定の送受信機
を選択するようにした通信装置において、 ゛該送受信機から該キー局への送信準備のときに作動せ
しめる送信スイッチ回路と、 該キー局と該送受信機間の通信信号がな（な−ったこと
を検知してスケルチ信号を出力せしめるノイズスケルチ
回路と、 該送信スイッチ回路の信号と該ノイズスケルチ回路のス
ケルチ信号とのゲート出力で作動して予め設定された可
聴周波信号を出力する発振回路と、 を具備したことを特徴とする受信モニタ装置。(1) A key station and multiple transceivers communicate using carrier waves of the same frequency, and the communication signal includes a continuous tone signal for discrimination, and a specific transceiver is selected using this continuous tone signal. The communication device includes: a transmission switch circuit that is activated when preparing for transmission from the transceiver to the key station; A noise squelch circuit that outputs a squelch signal; and an oscillation circuit that operates with a gate output of a signal from the transmission switch circuit and a squelch signal from the noise squelch circuit to output a preset audio frequency signal. A reception monitor device characterized by:
信スイッチ回路は、マイクロホンのフックへの着脱でオ
ン、オフ作動せしめるようにした受信モニタ装置。(2) Utility Model Registration Scope of Claim 1 The reception monitoring device according to claim 1, wherein the transmission switch circuit is turned on and off by attaching and detaching a microphone to a hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15558881U JPS5861555U (en) | 1981-10-20 | 1981-10-20 | Reception monitor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15558881U JPS5861555U (en) | 1981-10-20 | 1981-10-20 | Reception monitor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5861555U true JPS5861555U (en) | 1983-04-25 |
Family
ID=29948160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15558881U Pending JPS5861555U (en) | 1981-10-20 | 1981-10-20 | Reception monitor device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5861555U (en) |
-
1981
- 1981-10-20 JP JP15558881U patent/JPS5861555U/en active Pending
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