JPH09172697A - Accessory of radio equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To place a transmission reception changeover switch (PTT switch) freely by adopting a removable changeover switch for the transmission reception changeover switch (PTT switch) in an external adaptor connecting to a radio equipment selecting the simplex system (press-to-talk system) and the duplex system and leading out a reception demodulation output, a transmission modulation input, and a transmission reception changeover switch signal from the radio equipment with a cable. SOLUTION: In the accessory of the radio equipment provided with a head set 5 and a PTT switch 4 and leading out a reception demodulation output, a transmission modulation input, and a transmission reception changeover switch signal from the radio equipment body 1 with a cable, a jack leading out only the transmission reception changeover switch signal is adopted for a jack 6 connecting to the radio equipment body 1. In addition to above, a plug connecting only to the PTT switch 4 is provided. The PTT switch 4 is made available from the outside of the radio equipment by connecting the plug to the jack. Since a cable for the PTT switch 4 is a separate cable from a cable for the head set 5, the transmission reception changeover switch is placed at a free place.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a communication system as
A radio that is connected to a wireless device that can select a simplex system (press talk system) and a duplex system, extracts a reception demodulated audio signal from the wireless device, and gives a transmission modulation input signal and a transmission / reception changeover switch signal to the wireless device. It relates to a device attached to the machine.

[0002]

2. Description of the Related Art Conventionally, in a radio device in which a simplex system and a duplex system can be selected, when a headphone with a microphone (hereinafter referred to as a headset) is used for an operator to talk in a hands-free manner, As shown in FIG. 2, the headset 5 is connected to the wireless device 1 by the headset jack 2. In this accessory device, the transmission / reception changeover switch 4 (hereinafter referred to as PTT switch) is provided on the cable connecting the headset 5 and the headset jack 2. However, when using this radio 1 in duplex mode, PT
Since the T switch 4 is not used, it is unnecessary. During use, the PTT switch 4 is always fixed around the chest or belt of the operator, but when using the headset 5, the operator often works with both hands.
If the switch 4 is installed in an unstable place, the operation becomes inconvenient.

[0003]

Since the PTT switch is on the cable between the radio and the headset, it cannot be removed even when it is not needed, and the installation place is limited when clipped on clothes. Becomes inconvenient. The present invention is PT
It is an object of the present invention to provide a device attached to a wireless device in which a T switch can be arbitrarily attached and detached and an installation place can be freely set.

[0004]

[Means for Solving the Problems] P to be pulled out of the radio
In order to be able to freely set the place where the TT switch is attached, a jack is provided that can take out only the signal of the PTT switch from the plug of the headset connected to the radio. Separately, a plug to which only the PTT switch is connected is provided, and when the PTT switch is used, the plug is connected to the jack of the headset for use.

As a result, since the PTT switch can be attached to and detached from the headset, the PTT switch can be fixed and used at a desired place when the user needs it.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
This will be described below. When using the headset 5,
The headset jack 6 to which the headset 5 is connected is connected to the wireless device 1. Also, when a PTT switch is required, such as when making a telephone call in the simplex system, the PTT jack 3 is connected to the headset jack 6. The PTT switch 4 is installed at a favorite place such as a pants belt. The headset 5 is installed on the operator's head so that the user can talk freehand. During simplex transmission, the PTT switch 4 is pressed to transmit, and when released, the reception state is set. When duplicating, the switch of the wireless device 1 is used without connecting the PTT jack 3.

[0007]

According to the present invention, the PTT switch can be attached / detached as required and can be installed at a free place during use, so that the operability of the wireless device is improved.

[Brief description of the drawings]

FIG. 1 is an external view showing an embodiment of the present invention.

FIG. 2 is an external view showing an example of a conventional radio accessory device.

[Explanation of symbols]

1 ... Radio, 2 ... Headset jack, 3 ... PTT jack, 4
… PTT switch, 5… Headset,
6 ... Headset jack

Claims (1)

[Claims] 1. A headset and a PTT switch are provided,
Received demodulation output signal, transmission modulation input signal from the radio unit,
In a device attached to a radio device for pulling out a PTT switch signal via a cable, a jack for making the PTT switch detachable,
A device attached to a radio device, comprising: a plug fitted to the jack and connected to a PTT switch.