JPS594894B2 - Transceiver with standby switch - Google Patents
Transceiver with standby switchInfo
- Publication number
- JPS594894B2 JPS594894B2 JP53148692A JP14869278A JPS594894B2 JP S594894 B2 JPS594894 B2 JP S594894B2 JP 53148692 A JP53148692 A JP 53148692A JP 14869278 A JP14869278 A JP 14869278A JP S594894 B2 JPS594894 B2 JP S594894B2
- Authority
- JP
- Japan
- Prior art keywords
- switch
- standby
- transceiver
- transmission
- standby 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
Description
【発明の詳細な説明】
この発明は、スタンバイスイッチの付いたトランシーバ
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transceiver with a standby switch.
従来、トランシーバでは通信相手からの信号がない間は
スケルチを効かせてスピーカから雑音がでないようにし
、通信相手からの信号が入感すると、スケルチが開き音
声が聞こえるものであるが、音声の代りに、受信機内で
呼出音を発生させ、その呼出音でスピーカを鳴らせるよ
うにしたものがある。Conventionally, in transceivers, when there is no signal from the other party, the squelch is applied to prevent noise from the speaker, and when the signal from the other party is received, the squelch opens and the voice can be heard. Another type of receiver is one that generates a ringing tone within the receiver and uses the ringing tone to make a speaker sound.
この場合、トランシーバを待受け状態にする為、スタン
バイスイッチを設けている。In this case, a standby switch is provided to put the transceiver in a standby state.
このスタンバイスイッチを接にしている間は、トランシ
ーバは待受け状態になつている。このとき、前述のスタ
ンバイスイッチと機械的に連動させ、送信できないよう
に送受切換スイッチを固定させている。本発明は、この
ような機械的な固定方法を廃止し、複雑な構造を簡単に
して、しかも、スタンバイスイッチを接にしている時、
送受切換スイッチを送信側にしても電波を発射しないよ
うにしたものである。以下、本発明のスタンバイスイッ
チ付トランシーバについて一実施例の図面とともに説明
する。While this standby switch is connected, the transceiver is in a standby state. At this time, the transmission/reception changeover switch is mechanically linked to the standby switch mentioned above and fixed so that transmission cannot be performed. The present invention eliminates such a mechanical fixing method, simplifies the complicated structure, and furthermore, when the standby switch is connected,
Even if the transmitter/receiver switch is set to the transmitter side, no radio waves are emitted. DESCRIPTION OF THE PREFERRED EMBODIMENTS A transceiver with a standby switch according to the present invention will be described below with reference to drawings of an embodiment.
図において、１は中間周波増幅器、２は検波器、３は受
信信号の強弱に応じてスイッチ回路４を接、断するため
のスケルチ回路であり、スイッチ回路４を接、断にする
受信信号のレベルを調節することができるように構成さ
れている。４は前述のスケルチ回路３で決められたレベ
ル以上の受信信号のとき、検波器２の検波出力、または
低周波発振回路６の出力を低周波増幅器５に接続し、前
述のスケルチ回路３で決められたレベル以下の受信信号
のとき、検波器２の検波出力、または低周波発振回路６
の出力を低周波増幅器５への接続を断にするスイッチ回
路である。In the figure, 1 is an intermediate frequency amplifier, 2 is a detector, and 3 is a squelch circuit for connecting or disconnecting the switch circuit 4 depending on the strength of the received signal. It is configured so that the level can be adjusted. 4 connects the detection output of the detector 2 or the output of the low-frequency oscillation circuit 6 to the low-frequency amplifier 5 when the received signal is higher than the level determined by the squelch circuit 3 described above; When the received signal is lower than the detected level, the detection output of the detector 2 or the low frequency oscillation circuit 6
This is a switch circuit that disconnects the output from the low frequency amplifier 5.
５は低周波増幅器であり、受信時にはスピーカを鳴らせ
、送信時には、変調器として働らくものである。Reference numeral 5 denotes a low frequency amplifier, which makes a speaker sound during reception, and functions as a modulator during transmission.
６は呼出音を発生するための低周波発振回路、７は送信
周波数を決定するための発振器、８は送信用の高周波増
幅器でその出力は図示していない送受切換スイッチを介
してアンテナに接続してある。6 is a low frequency oscillation circuit for generating a ring tone, 7 is an oscillator for determining the transmission frequency, and 8 is a high frequency amplifier for transmission, the output of which is connected to the antenna via a transmission/reception switch (not shown). There is.
そして中間周波増幅器の入力端子１２には、アンテナか
らの受信信号が中間周波に変換されて加えられるように
構成されており、また、図示していないが、中間周波増
幅器１およびスケルチ回路３には、受信時に電源が供給
され、低周波増幅器５および高周波増幅器８には送信時
、受信時共に電源が加えられるように構成されている。
９はスピーカで、１０は送信時のマイクである。The input terminal 12 of the intermediate frequency amplifier is configured such that the received signal from the antenna is converted into an intermediate frequency and applied.Although not shown, the intermediate frequency amplifier 1 and the squelch circuit 3 are , power is supplied during reception, and power is applied to the low frequency amplifier 5 and high frequency amplifier 8 both during transmission and reception.
9 is a speaker, and 10 is a microphone for transmission.
５１−１、５１−２および５１−３は互に連動して操作
される送受切換スイツチであり、受信時には可動接点３
が接点Ｒ側に接続され、送信時には接点Ｔ側に接続され
る。51-1, 51-2, and 51-3 are transmitting/receiving selector switches that are operated in conjunction with each other, and when receiving, the movable contact 3
is connected to the contact R side, and is connected to the contact T side during transmission.
Ｓ２−１，Ｓ２−２は互に連動して操作されるスタンバ
イスイツチであり、可動接点３が接点１側に接続された
時スタンバイ断、接点２側に接続された時スタンバイ接
となる。１１は各部に電源を供給する電源供給端子であ
る。S2-1 and S2-2 are standby switches that are operated in conjunction with each other, and when the movable contact 3 is connected to the contact 1 side, the standby switch is disconnected, and when the movable contact 3 is connected to the contact 2 side, the standby switch is closed. Reference numeral 11 denotes a power supply terminal for supplying power to each part.
上記実施例において、今、送受切換スイツチＳ１−１，
Ｓ１−２およびＳ１ョが受信側に、すなわち接点Ｒ側に
接続され、スタンバイスイツチＳ２ョ，Ｓ２−２が接、
すなわち接点２側に接続されているとすると、スタンバ
イスイツチＳ２−１を介して低周波発振回路６に電源が
与えられているので、低周波発振回路６は呼出音を発生
させるように動作する。ところが、受信信号がない場合
は、スイツチ回路４が断になつており呼出音はスピーカ
より出てこない。今、受信信号が入り、スケルチ回路３
で決められたレベル以上になるとスイツチ回路４が接に
なつて呼出音がスピーカより発せられる。前述のスタン
バイスイツチＳ２−１，Ｓ２−２が接のとき、送受切換
スイツチＳ１−１，Ｓ１ョおよびＳ１−３を送信側にす
ると、送受切換スイツチＳ１−１ＰＳ１−２およびＳ１
−３の可動接点３が接点Ｔ側に接続されるが、スタンバ
イスイツチＳ２−１の可動接点３が接点２側に接続され
たままになつているので、送信周波数を決める発振器７
に電源電圧が供給されず、動作しないので電波を発射す
ることができない。In the above embodiment, the transmission/reception switch S1-1,
S1-2 and S1 are connected to the receiving side, that is, to the contact R side, and standby switches S2 and S2-2 are connected,
That is, if it is connected to the contact 2 side, power is supplied to the low frequency oscillation circuit 6 via the standby switch S2-1, so the low frequency oscillation circuit 6 operates to generate a ringing tone. However, if there is no received signal, the switch circuit 4 is disconnected and no ringing tone is output from the speaker. Now, the received signal enters, squelch circuit 3
When the level reaches a predetermined level or higher, the switch circuit 4 is connected and a ringing tone is emitted from the speaker. When the standby switches S2-1 and S2-2 mentioned above are on, and the transmission/reception changeover switches S1-1, S1 and S1-3 are set to the transmitting side, the transmission and reception changeover switches S1-1PS1-2 and S1
-3's movable contact 3 is connected to the contact T side, but since the movable contact 3 of the standby switch S2-1 remains connected to the contact 2 side, the oscillator 7 that determines the transmission frequency
Since power supply voltage is not supplied to the device and it does not operate, it cannot emit radio waves.
スタンバイスイツチＳ２−１，Ｓ２−２を断にすれば、
スタンバイスイツチＳ２−１，Ｓ２−２の可動接点３が
接点１側に接続され、送受切換スイツチＳ，−１，Ｓ１
−２およびＳ１−３の送受の切換に従がつて、．受信、
送信をすることができる。If standby switches S2-1 and S2-2 are turned off,
The movable contacts 3 of the standby switches S2-1, S2-2 are connected to the contact 1 side, and the transmit/receive changeover switches S, -1, S1
-2 and S1-3, following the switching of transmission and reception. reception,
Can send.
以上の説明でわかるように、上記実施例によればスタン
バイスイツチと機械的に連動させて、送受切換スイツチ
を固定しなくても、スタンバイスイツチを接にしている
間、送受切換スイツチを送信側にしても、電波を発射し
ないようにすることができ、簡単に優れたトランシーバ
を得ることができる。As can be seen from the above explanation, according to the above embodiment, the transmission/reception selection switch is mechanically linked to the standby switch, so that the transmission/reception selection switch can be set to the transmitting side while the standby switch is in contact, without the need to fix the transmission/reception selection switch. However, you can easily obtain a good transceiver by not emitting radio waves.
以上、実施例より明らかなように本発明のトランシーバ
によれば、スタンバイスイツチを接にしている間は送受
切換スイツチを送信側にしても電波を発射せず正確に相
手の信号を受信することができる。As is clear from the above embodiments, according to the transceiver of the present invention, even if the transmit/receive selector switch is set to the transmitting side while the standby switch is connected, it is possible to accurately receive the other party's signal without emitting radio waves. can.
そして、その構成は従米に比して著しく簡単であり実用
上きわめて有効なものである。Its structure is significantly simpler than that of the conventional one, and it is extremely effective in practice.
図は本発明のスタンバイスイツチ付トランシーバにおけ
る一実施例の概略電気的結線図である。
１・・・・・一中間周波増幅器、２・・・・・・検波器
、３−・・・・・スケルチ回路、４・・・・・・スイツ
チ回路、５・・・・・・低周波増幅器、６・・・・・・
低周波発振回路、７・・・・・・発振器、８・・・・・
・高周波増幅器、９・・・・・・スピーカ、１０・・・
・・・マイク、１１・・・・・・電源端子、１２・・・
・・・入力端子、Ｓ１−１〜Ｓ１−３・−・・・・送受
切換スイツチ、Ｓ２−１，Ｓ２−２・・・・・・スタン
バイスイツチ。The figure is a schematic electrical connection diagram of an embodiment of a transceiver with a standby switch according to the present invention. 1... Intermediate frequency amplifier, 2... Detector, 3... Squelch circuit, 4... Switch circuit, 5... Low frequency Amplifier, 6...
Low frequency oscillation circuit, 7... Oscillator, 8...
・High frequency amplifier, 9...Speaker, 10...
...Microphone, 11...Power terminal, 12...
...Input terminal, S1-1 to S1-3...Transmission/reception changeover switch, S2-1, S2-2...Standby switch.
Claims (1)
音を発生するように構成したスタンバイスイッチ付きの
トランシーバであつて、上記トランシーバを構成する送
信機への電源供給路に設けた送受切換スイッチにスタン
バイスイッチの断接点を接続し、スタンバイスイッチを
接にして待受け状態にしている時、送受切換スイッチを
送信側にしても送信機に電源電圧が加わらないようにし
て電波を発射しないように構成したスタンバイスイッチ
付トランシーバ。1 A transceiver equipped with a standby switch configured to generate a ring tone from a speaker when a signal from a communication partner is received, and a standby switch installed in the transmission/reception selector switch provided in the power supply path to the transmitter that constitutes the transceiver. A standby system configured so that when the switch's disconnection point is connected and the standby switch is connected to enter standby mode, no power supply voltage is applied to the transmitter and it does not emit radio waves even if the transmission/reception selector switch is set to the transmitting side. Transceiver with switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53148692A JPS594894B2 (en) | 1978-11-30 | 1978-11-30 | Transceiver with standby switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53148692A JPS594894B2 (en) | 1978-11-30 | 1978-11-30 | Transceiver with standby switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5574245A JPS5574245A (en) | 1980-06-04 |
| JPS594894B2 true JPS594894B2 (en) | 1984-02-01 |
Family
ID=15458457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53148692A Expired JPS594894B2 (en) | 1978-11-30 | 1978-11-30 | Transceiver with standby switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS594894B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0749800B2 (en) * | 1988-03-11 | 1995-05-31 | 三菱電機株式会社 | Axial blower |
-
1978
- 1978-11-30 JP JP53148692A patent/JPS594894B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5574245A (en) | 1980-06-04 |
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