JPH10322240A - Transceiver provided with radio receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent malfunction or intrusion of noise into a transceiver transmission reception circuit while avoiding excess power consumption and to allow the user to select the transceiver to the transmission state during reception of a radio broadcast without a special operation. SOLUTION: Upon the sensing of a PTT detection circuit 86 or a squelch 92 of a transceiver transmission reception circuit 74, a control means 76 interrupts power supply to an FM radio reception circuit 72. Thus, the transmission by the transceiver transmission reception circuit 74 is selected with a simple operation. Moreover, since power supply to the FM radio reception circuit 72 is interrupted, intrusion of noise to and malfunction of the transceiver transmission reception circuit 74 are prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a radio transceiver having a radio receiving function.

[0002]

Conventionally, this type of transceiver with radio has been disclosed in Japanese Patent Application Laid-Open Nos. 52-89013 and 53-29010 while receiving a radio broadcast. When a transceiver signal is received or a radio signal is transmitted by a transceiver during reception of a radio broadcast, a radio reception signal from a radio reception circuit is cut off.

As another example, Japanese Patent Application Laid-Open No.
Japanese Patent Publication No. 108 discloses, for example, a technique in which when a transceiver reception signal becomes higher than a predetermined level during reception of a radio broadcast, power supply to a radio reception circuit is cut off, and the sound of the transceiver is output from a speaker. I have.

However, the former transceiver with radio is
Since the radio receiving circuit operates even during the transmission and reception of the transceiver, there is a risk that noise may be mixed into the transceiver transmitting / receiving circuit or the transceiver transmitting / receiving circuit may malfunction due to the oscillation of the radio receiving circuit. In addition, the radio reception circuit operates even when the radio reception signal is cut off and the radio reception circuit is not in use, which causes extra power consumption.

On the other hand, in the latter transceiver with radio, power supply to the radio receiving circuit is cut off when receiving the transceiver, but when transmitting the transceiver, the sound from the radio receiving circuit is directly output from the speaker.
Therefore, the radio function had to be stopped before transmission by the transceiver, and the operation was troublesome.

In view of the above problems, the present invention prevents unnecessary power consumption, prevents noise from entering the transceiver transmitting and receiving circuit and malfunctions, and simultaneously performs radio broadcasting without performing any special operation. It is an object of the present invention to provide a radio-equipped transceiver capable of switching to the transmission state of the transceiver during reception of the radio.

[0007]

According to a first aspect of the present invention, there is provided a radio-equipped transceiver.
A radio reception circuit, a transceiver transmission / reception circuit having PTT detection means and reception detection means, a power supply unit for supplying power to the radio reception circuit and the transceiver transmission / reception circuit, a radio power switch which can be operated independently of each other, and A transceiver power switch, and a control circuit for controlling energization of the radio reception circuit and the transceiver transmission / reception circuit, wherein the control circuit detects the power supply when the PTT detection unit or the reception detection unit detects The power supply of the radio receiving circuit is cut off, and the transceiver transmitting / receiving circuit is operated with priority.

According to the first aspect of the present invention, even when a radio broadcast is being listened to by the radio receiving circuit, power is supplied to the radio receiving circuit when the PTT detecting means or the receiving detecting means of the transceiver transmitting / receiving circuit senses it. It shuts off and operates the transceiver transmission / reception circuit with priority. Therefore, without performing any special operations during radio reception,
Switching to transmission / reception by the transceiver transmission / reception circuit can be performed with a simple operation. Further, during transmission / reception by the transceiver transmission / reception circuit, power to the radio reception circuit is cut off, so that noise due to oscillation of the radio reception circuit enters the transceiver transmission / reception circuit or the transceiver transmission / reception circuit malfunctions. There is no fear and no wasteful power is consumed.

According to a second aspect of the present invention, there is provided a transceiver with a radio according to the first aspect, further comprising a first circuit board on which the transceiver transmitting / receiving circuit is formed and a first circuit board on which the radio receiving circuit is formed. And the second circuit board is formed independently, and the reception detecting means, P
Forming TT detection means and power supply switching means, arranging the first circuit board substantially parallel to the front of the housing, and positioning the second circuit board in the housing at right angles to the first circuit board. And the two circuit boards are electrically connected.

According to the configuration of the second aspect, the transceiver transmitting / receiving circuit and the power supply switching means having the reception detecting means and the PTT detecting means are formed on the first circuit board, while the radio receiving circuit is provided on the second circuit board. Each of these circuit boards is formed independently. Therefore, it is easy to confirm the operation and take measures against noise for each function of the first and second circuit boards, and the assembling workability is improved, and the serviceability is also improved. Furthermore, since the first circuit board is disposed orthogonal to the second circuit board in the housing, noise and malfunction due to oscillation of the radio receiving circuit can be structurally prevented. In addition, since the second circuit board is disposed on the side surface of the housing, the operation unit of the radio receiving circuit can be optimally disposed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a transceiver with a radio according to the present invention will be described below with reference to the accompanying drawings. First, the mechanical configuration of the present apparatus will be described with reference to FIGS. 2 to 5. Reference numeral 1 denotes a casing that forms an outer shell of a transceiver with a radio, which is, for example, a combination of a front casing 2 and a rear casing 3. It is composed. A speaker hole 4 and a microphone hole 5 are formed on the front surface of the housing 1, that is, on the front surface of the front housing 2, and a speaker 6 serving as an audio output unit and a voice input unit are provided at corresponding positions inside the housing 1. A certain microphone 7 is provided. A transceiver switch operating body 8 and a radio switch operating body 9 are provided on the front surface of the front housing 2.
And a volume changeover switch operating body 10 are provided so as to be rotatable within a predetermined range by manual operation. Each of the operation bodies 8 to 10 includes a switch selector 11 on a shaft protruding inside the housing 1.
, A transceiver power switch 12, a radio power switch 13, and a volume switch 14 are provided at corresponding positions of the operating bodies 8 to 10 so that they can be operated independently. Reference numeral 15 denotes an O-ring that seals between the operation bodies 8 to 10 and the front housing 2, 16 denotes a rubber rubber or the like attached to the outer periphery of the microphone 7, and 17 denotes a front surface of the microphone 7. Mike guards.

An earphone jack to which an earphone (not shown) can be connected is provided on the upper surface of the housing 1, that is, on the upper surface of the front housing 2.
21 and a microphone jack 22 to which an external microphone (not shown) can be connected. Each of these jacks 21 and 22 is provided in a sealable manner by a pin jack rubber 23 made of rubber or the like, and has a flexible pin jack cap 24 holding one side on the upper surface of the rear housing 3 so as to have an upper part. Are openably closed. A transceiver transmission / reception channel switching operation body 25 is rotatably provided on the upper surface of the front housing 2, and a transmission / reception channel switching operation body 25 is interlocked with the transmission / reception channel switching operation body 25 at a corresponding position inside the housing 1. A changeover switch 26 is provided. A tuning rubber 27 for sealing is provided between the front housing 2 and the transmission / reception channel switching operation body 25.

A PTT (press-press)
to-talk: press talk) operation body 31 is provided,
At a corresponding position inside the housing 1, a push button type PTT switch 32 is provided. These PTT operation bodies 31 and P
The TT switch 32 constitutes a transmission / reception switching mechanism for switching the transmission / reception of the transceiver. When the PTT operating body 31 and the PTT switch 32 are pushed to turn on, transmission becomes possible.
When is turned off, a transmission / reception standby state is set. 33 is P
A sealing switch rubber interposed between the TT operating body 31 and the PTT switch 32.

On the other hand, a tuning dial 34 of a radio receiver is rotatably provided on the upper part of the other side of the housing 1, and a variable condenser 35 is provided at a corresponding position inside the housing 1. The variable condenser 35 is a so-called variable capacitor for tuning, and its shaft portion has a dial mounting hole formed in the front housing 2.
It is formed on a second circuit board 37 as one component that is exposed from 36 and constitutes a radio receiving circuit. The shafts of the tuning dial 34 and the variable condenser 35 are connected by screws 38, so that the movable part of the variable condenser 35 rotates coaxially with the tuning dial 34. Note that 39
Is a tuning rubber made of rubber or the like for sealing between the front housing 2 and the tuning dial 34.

Reference numeral 41 denotes an upper rear portion of the housing 1, that is, the rear housing 3.
This is a transceiver antenna that is rotatably attached to the side. A shaft portion 42 formed on the base end side of the transceiver antenna 41 and protruding inside the rear housing 3 has a bending washer 43 and an O-ring 44 for sealing inserted therethrough.
It is in contact with a metal antenna contact piece 47 attached to the upper part of the inner surface of the rear housing 3 by screws 45 and 46. Further, the antenna contact piece 47 is also in contact with the metal board contact piece 48 by the screw 46, and the base of the board contact piece 48 is connected to the first circuit board 49 by soldering, so that the transceiver antenna The electrical connection between the first circuit board 49 and the first circuit board 49 is made.

A lower part of the rear surface of the housing 1 is formed with a concave battery storage part 51 capable of storing a plurality of batteries (not shown). A groove 52 is formed in the outer peripheral portion of the battery housing portion 51, and a packing 53 made of rubber or the like is provided to fit into the groove 52. Then, cover the opening of the battery storage unit 51,
A battery cover 54 is attached to the back side of the housing 1. Battery lid 54
Has a ridge 55 corresponding to the groove 52 formed around the battery housing 51, and the ridge 55 abuts the packing 53 to seal the battery housing 51. 56, 5
Reference numerals 7, 58, and 59 denote metal battery contact pieces provided on the upper and lower portions of the battery storage 51, respectively.

The first circuit board 49 is mounted and fixed inside the housing 1 by a plurality of screws 61, and includes a transceiver transmission / reception circuit including a PTT detection circuit 86 and a squelch circuit 92 described later.
Each circuit other than the radio receiving circuit is formed, such as a power supply switching unit including a radio switch 74 and a transceiver switch 75. Reference numeral 62 denotes an insulating seal provided between the first circuit board 49 and the rear housing 3.
The first circuit board 49 is configured independently of the second circuit board 37 on which the radio receiving circuit is formed, and its component mounting surface is provided substantially parallel to the front and back surfaces of the box-shaped housing 1. ing. On the other hand, the second circuit board 37 is provided inside the housing 1 like the first circuit board 49, and its component mounting surface is substantially orthogonal to the component mounting surface of the first circuit board 49, And,
It is provided substantially parallel to the side surface of the housing 1. Although not shown here, the first circuit board 49 and the second circuit board 37 are electrically connected by connecting parts such as connectors. Reference numeral 63 denotes an LED lamp mounted on the first circuit board, and reference numeral 64 denotes a lamp cover that covers a light emitting portion of the LED lamp 63.

Next, the electrical configuration will be described with reference to FIG. In the figure, reference numeral 71 denotes a power supply as a power supply unit. In the present embodiment, a plurality of batteries stored in the battery storage unit 51 correspond to this. A radio switch 73 is connected to a DC voltage line between the power supply 71 and the FM radio receiving circuit 72, and another transceiver switch 75 is connected to a DC voltage line between the power supply 71 and the transceiver transmitting / receiving circuit 74. Connected. Each of the radio switch 73 and the transceiver switch 75 corresponds to power switching means for turning on and off in response to a control signal from a control circuit 76 for monitoring the transceiver power switch 12 and the radio power switch 13. When it comes to, the FM radio receiving circuit of the latter stage
A predetermined DC power supply voltage is supplied to 72 or the transceiver transmitting / receiving circuit 74. In this embodiment, when either the transceiver power switch 12 or the radio power switch 13 is operated, the power supply voltage from the power supply 71 is also supplied to the power amplifier 77 connected in front of the speaker 6. The control circuit 76 is always supplied with a power supply voltage from the power supply 71.

An FM radio receiving circuit 72 for receiving an FM broadcast.
Corresponds to a radio receiving circuit. This is F
A device that can receive, for example, an AM wave other than the M wave may be used. The FM receiving circuit 72 includes a radio antenna 78,
When the tuning dial 34 and, consequently, the variable condenser 35 are rotated to select a required radio wave from the radio antenna 78, a received signal of a specific frequency is demodulated by a known means, and the power amplifier is turned on.
Has a function to send to 77. The power amplifier 77 amplifies the input weak signal into a signal sufficient to sound the speaker 6. The control circuit 76 not only controls the power supply to the radio switch 73 and the transceiver switch 75, but also controls the operation of each unit including the transceiver transmission / reception circuit 74.

The transceiver transmission / reception circuit 74 switches the transceiver antenna 41 to either transmission or reception by a transmission / reception changeover switch 81 interlocked with the PTT switch 32. The transmitting unit of the transceiver transmitting / receiving circuit 74 includes a microphone 5 for inputting an audio signal, a PTT switch 32 for supplying and cutting off the audio signal from the microphone 5, and an input level of the audio signal set to a predetermined value or less.
A limiter 82 for reducing the maximum frequency deviation to a specified value or less, a transmission-side low-frequency amplifier 83 that amplifies the audio signal from the limiter 82 to a required level, and a frequency that is changed by the audio signal from the transmission-side low-frequency amplifier 83 And a voltage-controlled oscillator (VCO) 84 that outputs a frequency-modulated carrier to the transceiver antenna 41. The VCO 84 includes a phase locked loop, that is, a PLL 85. The VCO 84 receives a control signal output from the control circuit 76 to the PLL 85 in accordance with the position of the transmission / reception channel switch 26, and transmits a carrier wave output to the transceiver antenna 41. The center frequency is set. 86 is the PTT operation body
A PTT detection circuit as PTT detection means for detecting whether or not the PTT switch 31 has been operated. Although the PTT detection circuit 86 of the present embodiment detects the presence or absence of an audio signal to the limiter 82, for example, the detection may be performed by directly turning on and off the PTT switch 32 into an electrical signal. . The detection signal from the PTT detection circuit 86 is output to the control circuit 76.

On the other hand, the receiving section of the transceiver transmitting / receiving circuit 74 tunes to the frequency of the signal received from the transceiver antenna 41 and amplifies the harmonics in the receiving frequency band to an appropriate level. An intermediate amplifier 88 that receives the oscillation signal and converts the received signal amplified by the high-frequency amplifier 87 to a constant intermediate frequency and amplifies it, and converts a change in frequency into a change in amplitude to receive the signal output from the intermediate amplifier 88. It comprises a demodulator 89 for detecting an audio signal from a signal, and a receiving low-frequency amplifier 90 for amplifying the audio signal extracted by the demodulator 89 to a required level. A switch 91 composed of, for example, a semiconductor switching element is provided between the reception-side low-frequency amplifier 90 and the power amplifier 77. The switch 91 is turned on and off in response to a control signal from the control circuit 76. Reference numeral 92 denotes a squelch circuit corresponding to reception detection means for detecting the presence or absence of a reception signal from the transceiver antenna 41 on a specific channel when the transceiver transmission / reception circuit 74 is in a reception state. When the squelch circuit 92 detects that the signal received from the transceiver antenna 41 is lower than a predetermined level, the control circuit 76 switches off the switch 91 to prevent the speaker 6 from outputting unpleasant noise. The control circuit 76 determines whether the squelch circuit 92 senses a received signal when both the transceiver power switch 12 and the radio power switch 13 are on,
Alternatively, when the PTT detecting circuit 86 senses the pressing operation of the PTT switch 32, the radio switch 73 is turned off, the power supply to the FM radio receiving circuit 72 is cut off, and the transceiver transmitting / receiving circuit 74 is operated with priority. Has functions. The PTT detection circuit 86 and the squelch circuit 92
The power supply voltage is always supplied from the power supply 71 while the transceiver power switch 12 is turned on. Further, the transmission / reception changeover switch 81 is always on the reception side, and is switched to the transmission side when a carrier wave output is supplied from the VCO 84.

Next, the operation of the above configuration will be described. When this apparatus is used as a transceiver, first, the transceiver antenna 41 is turned upright from the upper part of the housing 1, and then only the transceiver power switch 12 corresponding to the transceiver switch operation body 8 is turned on (radio power switch). 13 is switched off). Then, the control circuit 76 turns on the transceiver switch 75, turns off the radio switch 73, and supplies a power supply voltage to the transceiver transmitting / receiving circuit 74 and the power amplifier 77. At this time, the transmission / reception switch 81 is on the reception side, and the transceiver transmission / reception circuit 74 is in a transmission / reception standby state.

In this state, the transmission / reception channel switching operation body
When the transmission / reception channel switch 26 corresponding to 25 is rotated, a channel to be used is selected, and the transceiver transmission / reception circuit 74 can transmit / receive a specific frequency.
Specifically, when the PTT switch 32 is not pressed, a control signal for setting the frequency of the oscillating signal from the VCO 84 is sent from the control circuit 76 to the PLL 85 so that a received signal having a frequency corresponding to the channel is demodulated. Is output. When a received signal of the channel arrives from the transceiver antenna 41, the signal is converted from the high frequency amplifier 87 to a predetermined intermediate frequency via the intermediate amplifier 88, and the audio signal demodulated by the demodulator 89 is converted to the receiving low frequency amplifier 90. Is output to At this time, the control circuit 76 receives the detection result from the squelch circuit 92 and switches the switch 91 to the ON state, whereby the audio signal from the receiving low-frequency amplifier 90 is output from the speaker 6 via the power amplifier 77. You. The volume of the speaker 6 at the time of reception can be changed as appropriate by operating the volume switch 14 corresponding to the volume switch operating body 10.

In this transmission / reception standby state, PT
When the PTT switch 32 corresponding to the T operation body 31 is pushed, the control circuit 76 receives a detection signal from the PTT detection circuit 86 and outputs a carrier wave corresponding to the channel selected by the transmission / reception channel switch 26 from the VCO 84. Thus, the control signal is output to the PLL 85. This allows
The audio signal from the microphone 5 is supplied to the transmission-side low-frequency amplifier 83 via the limiter 82, and the carrier signal from the VCO 84 is frequency-modulated by the amplified audio signal and applied to the transmission / reception switch 81. When the transmission / reception changeover switch 81 is switched to the transmission side, the frequency-modulated carrier signal is output to the transceiver antenna 41.

On the other hand, when this apparatus is used as a radio receiver, only the radio power switch 13 corresponding to the radio switch operating body 9 is turned on (transceiver power switch 12).
Switch off). Then, the control circuit 76 turns on the radio switch 73, turns off the transceiver switch 75, and supplies the power supply voltage to the FM radio receiving circuit 72 and the power amplifier 77. In this case, when the tuning dial 34 and, consequently, the variable condenser 35 are turned to select a necessary radio wave from the radio antenna 78, a reception signal of a specific frequency is demodulated, and an audio signal is output from the speaker 6 via the power amplifier 77. . The volume of the speaker 6 can be changed as appropriate by operating the volume switch 14.

Further, when the transceiver and the radio receiver are used at the same time, both the transceiver power switch 12 and the radio power switch 13 are turned on after the transceiver antenna 41 is turned upright. In an initial state, the control circuit 76 turns on both the radio switch 73 and the transceiver switch 75, and supplies a power supply voltage to the FM radio receiving circuit 72, the transceiver transmitting / receiving circuit 74, and the power amplifier 77. At this time, the transmission / reception changeover switch 81 is on the reception side, and the transceiver transmission / reception circuit 74 is in the transmission / reception standby state as described above. The control circuit 76 is a squelch circuit
Unless the 92 detects the received signal of the channel, the switch 91 is turned off, and the output from the transceiver transmitting / receiving circuit 74 is cut off here. As a result, the audio signal from the FM radio receiving circuit 72 is preferentially output from the speaker 6. In this case, the tuning dial 34 and consequently the variable condenser 35
Can be tuned to the desired frequency,
As described above, the volume of the speaker 6 can be changed by operating the volume switch 14.

When the PTT switch 32 is pushed, the control circuit 76 receives the detection signal from the PTT detection circuit 86, turns off the radio switch 73, and cuts off the power supply to the FM radio reception circuit 72. . At the same time, the transmission / reception changeover switch 81 is switched to the transmission side, and the carrier wave from the VCO 84 frequency-modulated by the audio signal from the microphone 5 is output to the transceiver antenna 41. When the PTT switch 32 is released to return to the original position, the control circuit 76 switches the transmission / reception changeover switch 81 to the reception side, and turns on the radio switch 73 after a predetermined time, for example, two seconds later, to turn on the FM radio reception circuit 72. Resumes power supply to the Thus, the audio signal received by the FM radio receiving circuit 72 from the speaker 6 is automatically output again. During this time, switch 91
Remains off.

In the transmission / reception standby state, when the reception signal of the channel selected in advance by the transmission / reception channel switch 26 arrives at the transceiver antenna 41, and the demodulated audio signal is output to the reception-side low-frequency amplifier 90. , The control circuit 76 receives the detection result from the squelch circuit 92, turns off the radio switch 73, and sets the FM radio receiving circuit
Turn off power to 72. At the same time, the control circuit 76 turns on the switch 91 to turn on the transceiver transceiver circuit.
The audio signal received by 74 is amplified by power amplifier 77 and output from speaker 6. Thereafter, when the reception by the transceiver transmission / reception circuit 74 is completed, the control circuit 76 switches the switch 91 to the off state, and turns on the radio switch 73 after a predetermined time, for example, two seconds later, and sets the FM radio reception circuit
Restart power supply to 72. Thus, the audio signal received by the FM radio receiving circuit 72 from the speaker 6 is automatically output again.

As described above, even when a radio broadcast by the FM radio receiving circuit 72 is being listened to, the PTT detecting circuit 86
Detects the pressing operation of the PTT switch 32, the control circuit
76 shuts off the power supply to the FM radio receiving circuit 72 and gives priority to the operation of the transceiver transmitting / receiving circuit 74.
The transmission by the transceiver transmission / reception circuit 74 can be switched by a simple operation just by pressing the TT switch 32. The control circuit 76 is a squelch of the transceiver transmitting / receiving circuit 74.
When the 92 detects the arrival of the received signal, the power supply to the FM radio receiving circuit 72 is similarly cut off, and the transceiver transmitting / receiving circuit 74 is operated with priority. For this reason, if the transceiver transmitting / receiving circuit 74 receives the signal even while listening to the radio broadcast, the power to the FM radio receiving circuit 72 is cut off, and the audio signal from the transceiver transmitting / receiving circuit 74 can be output from the speaker 6. . When the PTT switch 32 is released or the reception of the transceiver transmission / reception circuit 74 is completed, the power supply to the FM radio reception circuit 72 is automatically restarted, so that it is not necessary to operate the radio power switch 13 each time. When transmission or reception is performed by the transceiver transmission / reception circuit 74, the power supply to the FM radio reception circuit 72 is cut off, so that the FM radio reception circuit
Noise caused by the oscillation of 72 is the transceiver transceiver circuit 74
, Or the transceiver transmitting / receiving circuit 74 malfunctions. Further, during transmission / reception by the transceiver transmission / reception circuit 74, power supply to the FM radio reception circuit 72 is cut off, so that useless power is not consumed.

That is, the radio-equipped transceiver of this embodiment has an FM radio receiving circuit 72 corresponding to a radio receiving circuit.
A transceiver transmission / reception circuit 74 having a PTT detection circuit 86 serving as a PTT detection unit and a squelch circuit 92 serving as a reception detection unit; a power supply 71 serving as a power supply unit for supplying power to the FM radio reception circuit 72 and the transceiver transmission / reception circuit 74; A radio power switch 12 and a transceiver power switch 13 which can be operated independently of each other;
And a control circuit 76 for controlling energization of the transceiver transmission / reception circuit 74. The control circuit 76 shuts off the power supply of the FM radio reception circuit 72 when either the PTT detection circuit 86 or the squelch circuit 92 senses. , Transceiver transceiver circuit 74
In addition to preventing unnecessary power consumption by energizing the FM radio receiving circuit 72 and preventing noise from entering the transceiver transmitting / receiving circuit 74 and malfunctioning, a special operation is also performed. It is possible to switch to the transmission state of the transceiver while receiving a radio broadcast without performing any operation.

By the way, in a transceiver with a radio in which a radio receiving circuit and a transceiver transmitting / receiving circuit are provided on a single circuit board, mixing of noise into the transceiver transmitting / receiving circuit due to oscillation of the radio receiving circuit and malfunction of the transceiver transmitting / receiving circuit may occur. Easy to occur in structure. Further, since the radio receiving circuit and the transceiver transmitting / receiving circuit are mixed on the circuit board, it is difficult to check the operation of the circuit board and take measures against noise, and the assembling workability is poor. In addition, when repairing,
The entire circuit must be replaced, including the circuit that does not cause a problem, and the serviceability is poor. Further, when the circuit board is arranged on a substantially flat surface of the housing, there is a problem that it is difficult to arrange an operation unit such as a tuning dial of a radio receiving circuit on a side surface of the housing.

In view of such a problem, in this embodiment,
Transceiver transceiver circuit 74 with transceiver function
Alternatively, a radio switch 73 and a transceiver switch 75 as power supply switching means are formed on a first circuit board 49, while an FM radio receiving circuit 72 as a radio receiving circuit having a radio receiving function is formed on a second circuit board 37. And these first
And the second circuit boards 49 and 37 are configured independently. For this reason, it is easy to check the operation and take measures against noise for the first and second circuit boards 49 and 37 for each function.
Further, assembling workability is improved, and repair and replacement can be performed on each of the circuit boards 49 and 37, so that serviceability is also improved. Further, the first circuit board 49 is connected to the second circuit board 37.
However, since it is arranged orthogonally in the housing 1, noise and malfunction due to the oscillation of the FM radio receiving circuit 72 can be structurally prevented. In addition, since the second circuit board 37 is disposed on the side surface of the housing, the operation unit such as the tuning dial 34 of the FM radio receiving circuit 72 formed on the second circuit board 37 is optimally arranged. Becomes possible.

That is, the first circuit board 49 on which the transceiver transmitting / receiving circuit 74 is formed and the second circuit board 37 on which the FM radio receiving circuit 72 is formed are formed independently, and the first circuit board 49 is Arranged substantially parallel to the front of the housing 1, the second
If the circuit board 37 is arranged orthogonally to the first circuit board 49 in the housing 1 and the two circuit boards 49 and 37 are electrically connected, the intrusion of noise into the transceiver transmitting / receiving circuit 74 and malfunction may occur. It is possible to provide a transceiver with a radio that can prevent the structure, easily perform an operation check and countermeasures against noise, improve assembling workability and serviceability, and can optimally arrange the operation unit of the FM radio receiving circuit 72.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, in this embodiment, the squelch circuit 92 is used as the reception detecting means for detecting the reception of the transceiver transmitting / receiving circuit 74, but other means can be used instead.

[0035]

According to the first aspect of the present invention, there is provided a transceiver with a radio, a radio receiving circuit, a transceiver transmitting / receiving circuit having PTT detecting means and receiving detecting means, and supplying power to the radio receiving circuit and the transceiver transmitting / receiving circuit. A power supply unit, a radio power switch and a transceiver power switch, each of which can be operated independently, and a control circuit that controls energization of the radio reception circuit and the transceiver transmission / reception circuit. The P
When either the TT detection means or the reception detection means senses, the power supply of the radio reception circuit is shut off, and the transceiver transmission / reception circuit is operated with priority. It is possible to provide a radio-equipped transceiver that can prevent noise from entering a transmission / reception circuit and malfunction, and can switch to a transmission state of a transceiver during reception of a radio broadcast without performing a special operation.

A transceiver with a radio according to a second aspect of the present invention, in addition to the configuration of the first aspect, further comprises a first circuit board on which the transceiver transmitting / receiving circuit is formed and a second circuit board on which the radio receiving circuit is formed. And the second circuit board is formed independently, and the reception detecting means, P
Forming TT detection means and power supply switching means, arranging the first circuit board substantially parallel to the front of the housing, and positioning the second circuit board in the housing at right angles to the first circuit board. In this case, not only the function and effect of claim 1 but also the noise and malfunction of the transceiver transmitting / receiving circuit can be structurally prevented. , Operation check and noise countermeasures are easy to perform, assembling workability and serviceability are improved,
Moreover, it is possible to provide a radio-equipped transceiver in which the operation unit of the radio receiving circuit can be optimally arranged.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electric configuration of a transceiver with a radio according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the entire radio-equipped transceiver.

FIG. 3 is a rear view of the radio transceiver with the battery cover partially cut away.

FIG. 4 is a cross-sectional view of the transceiver with a radio as viewed from the bottom side of the housing.

FIG. 5 is a perspective view of the radio-equipped transceiver;

[Explanation of symbols]

 1 Case 12 Radio power switch 13 Transceiver power switch 37 Second circuit board 49 First circuit board 71 Power supply 72 FM radio receiving circuit (radio receiving circuit) 74 Transceiver transmitting / receiving circuit 76 Control circuit 73 Radio switch (power switching means) 75 Transceiver switch (power switching means) 86 PTT detection circuit (PTT detection means) 92 Squelch circuit (reception detection means)

Claims (2)

[Claims] 1. A radio receiving circuit, a transceiver transmitting / receiving circuit having a PTT detecting unit and a receiving detecting unit, and a power supply unit for supplying power to the radio receiving circuit and the transceiver transmitting / receiving circuit can be operated independently of each other. Radio power switch and transceiver power switch,
A control circuit for controlling power supply to the radio reception circuit and the transceiver transmission / reception circuit, wherein the control circuit supplies power to the radio reception circuit when either the PTT detection means or the reception detection means senses the power. Wherein the transceiver is operated with priority given to the transceiver transceiver circuit. 2. A first circuit board on which the transceiver transmitting / receiving circuit is formed, and a second circuit board on which the radio receiving circuit is formed.
And the reception detecting means, the PTT detecting means, and the power supply switching means are formed on the first circuit board, and the first circuit board is substantially parallel to the front of the housing. 2. The transceiver according to claim 1, wherein the second circuit board is disposed orthogonal to the first circuit board in the housing, and the two circuit boards are electrically connected. .