JPS6130454B2 - - Google Patents
Info
- Publication number
- JPS6130454B2 JPS6130454B2 JP55112709A JP11270980A JPS6130454B2 JP S6130454 B2 JPS6130454 B2 JP S6130454B2 JP 55112709 A JP55112709 A JP 55112709A JP 11270980 A JP11270980 A JP 11270980A JP S6130454 B2 JPS6130454 B2 JP S6130454B2
- Authority
- JP
- Japan
- Prior art keywords
- transmitter
- receiver
- monitor
- radio
- antenna
- 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
- 238000000034 method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 11
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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
- H04B1/74—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 for increasing reliability, e.g. using redundant or spare channels or apparatus
Description
【発明の詳細な説明】
本発明は、安価にして送信モニターのできる単
一（シングルチヤネル）無線電話装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a single channel radiotelephone device that is inexpensive and capable of monitoring transmissions.
従来の複信無線機を用いるモニター受信方式を
第１図に示す。第１図において１は送信機、２は
モニター受信機、３は空中線切替器、４は空中
線、５は変調入力信号、６はプレストーク信号、
７はモニター出力信号である。空中線４は常時モ
ニター受信機２に接続されており着信入力をモニ
ターできる。送信時はプレストーク信号６がアー
スされると共に変調信号５が印加され、同時に空
中線切替器３により空中線４が送信装置に接続さ
れる。このとき送信電波は空中線切替器３を通し
てリークして、電波がモニター受信機２に加えら
れ変調信号のモニターも行うことができる。第１
図の方式において送信機１は現用予備自動切替方
式としても良く、また本件発明が対象とする方式
は現用予備自動切替方式についてである。 FIG. 1 shows a monitor reception system using a conventional duplex radio. In FIG. 1, 1 is a transmitter, 2 is a monitor receiver, 3 is an antenna switch, 4 is an antenna, 5 is a modulation input signal, 6 is a press talk signal,
7 is a monitor output signal. The antenna 4 is constantly connected to the monitor receiver 2 so that incoming call input can be monitored. At the time of transmission, the pre-talk signal 6 is grounded and the modulation signal 5 is applied, and at the same time, the antenna switch 3 connects the antenna 4 to the transmitter. At this time, the transmitted radio wave leaks through the antenna switch 3, and the radio wave is applied to the monitor receiver 2, so that the modulated signal can also be monitored. 1st
In the system shown in the figure, the transmitter 1 may use a working/standby automatic switching system, and the system to which the present invention is directed is the working/standby automatic switching system.
従来の第１図の方式の欠点は、送信時のモニタ
ーを行うためには送信機と受信機は独立に動作し
ている複信無線機である必要があり安価ないわゆ
るプレストーク式単信無線機では使用できず、複
信用無線機が必要であつた。なお単信無線機とは
送信機及び受信機のいずれか一方にのみ電源が供
給されて、送信と受信を交互に行う方式をいい、
複信無線機とは送信機及び受信機が同時に動作し
て送信と受信を同時に行なう方式をいう。 The disadvantage of the conventional method shown in Figure 1 is that in order to monitor transmission, the transmitter and receiver must be duplex radios that operate independently; It could not be used on a machine, and a duplex radio was required. A simplex radio is a system in which power is supplied to only one of the transmitter and receiver, and transmission and reception are performed alternately.
A duplex radio is a system in which the transmitter and receiver operate simultaneously to transmit and receive at the same time.
従つて本発明は従来の技術の上記欠点を改善す
るもので、その目的は単信用無線機を用いて送信
時における変調信号のモニターを実現することに
あり、その特徴は、送信機と受信機を有するプレ
ストーク式単一単信無線電話装置をスイツチ回路
により切換可能な現用系と予備系の２組使用し、
前記スイツチ回路は現用系の送信機と予備系の受
信機とが同時に動作するごとく構成し、当該送信
機の出力を当該受信機によりモニターするごとき
送信機のモニター受信方式にある。 Therefore, the present invention aims to improve the above-mentioned drawbacks of the conventional technology.The purpose of the present invention is to realize monitoring of a modulated signal during transmission using a single-channel radio. Two sets of press talk type single signal radio telephone equipment are used, a working system and a standby system, which can be switched by a switch circuit.
The switch circuit is constructed so that a working transmitter and a standby receiver operate simultaneously, and employs a transmitter monitor reception method in which the output of the transmitter is monitored by the receiver.
以下図面により実施例を説明する。 Examples will be described below with reference to the drawings.
第２図は本発明の実施例であつて１１，１２は
各々プレストーク式単信無線機であり、各々送信
系の現用機、予備機を示す。１３は空中線分配
器、１４は送信空中線切替器、１５は送信切替器
であり１４と連動し送信出力低下検出制御器（図
示せず）により制御される。１６は受信機出力切
替スイツチであり１５の送信切替器と連動して動
作する。受信出力は予備機側より出力されている
ので現用機にて送信中も受信機によるモニターが
可能なように動作する。 FIG. 2 shows an embodiment of the present invention, in which numerals 11 and 12 are press-to-talk type simplex radios, and respectively indicate a transmitting system in use and a standby device. Reference numeral 13 denotes an antenna distributor, 14 a transmitting antenna switch, and 15 a transmitter switch, which are interlocked with 14 and controlled by a transmitting output drop detection controller (not shown). Reference numeral 16 denotes a receiver output changeover switch, which operates in conjunction with the transmission changeover switch 15. Since the reception output is output from the standby unit, the receiver operates so that it can be monitored even when the active unit is transmitting.
以上説明したように第１の実施例ではプレスト
ーク式単信無線機２台の現用予備切替方式により
自局送信時のモニターが可能であり、特に複信専
用無線機を使用する必要が無く安価に構成でき
る。 As explained above, in the first embodiment, it is possible to monitor the transmitting time of the own station by switching between two pre-talk simplex radios, and it is inexpensive because there is no need to use a duplex-only radio. It can be configured as follows.
本発明は送信時のモニター機能を有しているの
で同報無線の基地局に使用し送信変調のモニター
および同一周波数を使用する他局同報無線基地局
の送信電波モニターを行うことができる。 Since the present invention has a monitoring function during transmission, it can be used in a broadcast radio base station to monitor transmission modulation and to monitor transmission radio waves of other broadcast radio base stations that use the same frequency.
第１図は従来のモニター受信方式のブロツク
図、第２図は本発明によるモニター受信方式のブ
ロツク図である。
１…送信機、２…受信機、３…空中線切替器、
４…空中線、５…変調入力信号、６…プレストー
ク信号、７…モニター出力信号、１１…現用プレ
ストーク式無線機、１２…予備プレストーク無線
機、１３…空中線分配器、１４…送信空中線切替
器、１５…送信切替器、１６…受信切替器。
FIG. 1 is a block diagram of a conventional monitor reception system, and FIG. 2 is a block diagram of a monitor reception system according to the present invention. 1...Transmitter, 2...Receiver, 3...Antenna switch,
4... Antenna, 5... Modulation input signal, 6... Press talk signal, 7... Monitor output signal, 11... Working press talk radio, 12... Reserve press talk radio, 13... Antenna distributor, 14... Transmission antenna switching 15...Transmission switching device, 16...Reception switching device.
Claims (1)
単信無線電話装置をスイツチ回路により切換可能
な現用系と予備系の２組使用し、前記スイツチ回
路は現用系の送信機と予備系の受信機とが同時に
動作するごとく構成し、当該送信機の出力を当該
受信機によりモニターすることを特徴とする送信
機のモニター受信方式。1. Two sets of press-talk type single signal radio telephone equipment having a transmitter and a receiver are used, a working system and a standby system, which can be switched by a switch circuit, and the switch circuit has a working system transmitter and a standby system receiving system. 1. A monitor reception method for a transmitter, characterized in that the transmitter is configured to operate simultaneously with the transmitter, and the output of the transmitter is monitored by the receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11270980A JPS5737944A (en) | 1980-08-18 | 1980-08-18 | Monitor reception system for transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11270980A JPS5737944A (en) | 1980-08-18 | 1980-08-18 | Monitor reception system for transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5737944A JPS5737944A (en) | 1982-03-02 |
| JPS6130454B2 true JPS6130454B2 (en) | 1986-07-14 |
Family
ID=14593531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11270980A Granted JPS5737944A (en) | 1980-08-18 | 1980-08-18 | Monitor reception system for transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5737944A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6375163U (en) * | 1986-10-31 | 1988-05-19 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH036349U (en) * | 1989-06-08 | 1991-01-22 | ||
| JPH06132941A (en) * | 1992-10-21 | 1994-05-13 | Nec Corp | Data transfer system |
-
1980
- 1980-08-18 JP JP11270980A patent/JPS5737944A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6375163U (en) * | 1986-10-31 | 1988-05-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5737944A (en) | 1982-03-02 |
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