JPS596346U

JPS596346U - wireless transceiver

Info

Publication number: JPS596346U
Application number: JP1982100505U
Authority: JP
Inventors: 藤澤　亨
Original assignee: 日本電気株式会社
Priority date: 1982-07-02
Filing date: 1982-07-02
Publication date: 1984-01-17

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

[Brief explanation of drawings]

第１図は本考案による無線送受信機の一実施例を示す回
路図、第２図は対象となる中継局の構成図である。１・・・連動スイッチ、２・・・トーン生成回路、３゜
９、　２６．　２９・・・逓倍回路、４．　５．　１９
．　２４゜２５・・・発振回路、６・・・偏移回路、７
．２７・・・ＩＤＣ回路、８．２８・・・変調回路、１
０．３０・・・励振回路、１１．３１・・・電力増幅回
路、１２．３２・・・アンテナ、１３．３３・・・高周
波増幅回路、１４゜３４・・・混合回路、１５．３５・
・・ＩＦＡ回路、１６゜３６・・・スケルチ回路、１７
．３７・・・検波回路、１８．３８・・・低周波増幅回
路、２０・・・マイクロホン、２１・・・スピーカ、２
２・・・送受切替スイッチ、３９・・・バンドパスフィ
ルタ、４０・・・共用フィルタ、４１・・・ローパスフ
ィルタ、４２・・・タイマ、４３・・・コールサイン発
生回路、４４・・・送信制御回路。第１図第２図FIG. 1 is a circuit diagram showing an embodiment of a wireless transceiver according to the present invention, and FIG. 2 is a configuration diagram of a target relay station. 1... Interlocking switch, 2... Tone generation circuit, 3°9, 26. 29...multiplier circuit, 4. 5. 19
．． 24゜25... Oscillation circuit, 6... Deviation circuit, 7
．． 27... IDC circuit, 8.28... Modulation circuit, 1
0.30...Excitation circuit, 11.31...Power amplifier circuit, 12.32...Antenna, 13.33...High frequency amplifier circuit, 14°34...Mixing circuit, 15.35.
・・IFA circuit, 16°36・・Squelch circuit, 17
．． 37...Detection circuit, 18.38...Low frequency amplification circuit, 20...Microphone, 21...Speaker, 2
2... Transmission/reception changeover switch, 39... Band pass filter, 40... Common filter, 41... Low pass filter, 42... Timer, 43... Call sign generation circuit, 44... Transmission control circuit. Figure 1 Figure 2

Claims

[Scope of utility model registration request]

A simplex wireless transceiver capable of direct communication using the same frequency for transmission and reception, and communication via a relay station using different layer wave numbers for transmission and reception, includes a transmitter that emits the first frequency and generates a specific signal to operate the relay station. a receiver, a local oscillator that outputs a difference frequency between the first frequency and the intermediate frequency, and a shift circuit that outputs the difference frequency between the second frequency and the intermediate frequency emitted from the relay station. connection of a specific signal generation circuit to the transmitting section, connection of the means including a shift circuit to the receiving section, disconnection of the specific signal generating circuit from the transmitting section, and connection of a local oscillator to the receiving section; A wireless transmitter/receiver comprising: a switch that performs the following functions in conjunction with each other.