JPS6230353Y2 - - Google Patents

Info

Publication number
JPS6230353Y2
JPS6230353Y2 JP1978073063U JP7306378U JPS6230353Y2 JP S6230353 Y2 JPS6230353 Y2 JP S6230353Y2 JP 1978073063 U JP1978073063 U JP 1978073063U JP 7306378 U JP7306378 U JP 7306378U JP S6230353 Y2 JPS6230353 Y2 JP S6230353Y2
Authority
JP
Japan
Prior art keywords
frequency
switch
selector
reception
selectors
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
Application number
JP1978073063U
Other languages
English (en)
Japanese (ja)
Other versions
JPS54175223U (ro
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1978073063U priority Critical patent/JPS6230353Y2/ja
Publication of JPS54175223U publication Critical patent/JPS54175223U/ja
Application granted granted Critical
Publication of JPS6230353Y2 publication Critical patent/JPS6230353Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Transceivers (AREA)
JP1978073063U 1978-05-30 1978-05-30 Expired JPS6230353Y2 (ro)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1978073063U JPS6230353Y2 (ro) 1978-05-30 1978-05-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1978073063U JPS6230353Y2 (ro) 1978-05-30 1978-05-30

Publications (2)

Publication Number Publication Date
JPS54175223U JPS54175223U (ro) 1979-12-11
JPS6230353Y2 true JPS6230353Y2 (ro) 1987-08-04

Family

ID=28985347

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1978073063U Expired JPS6230353Y2 (ro) 1978-05-30 1978-05-30

Country Status (1)

Country Link
JP (1) JPS6230353Y2 (ro)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113557A (ro) * 1974-07-25 1976-02-03 Saibanetsuto Kogyo Kk

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113557A (ro) * 1974-07-25 1976-02-03 Saibanetsuto Kogyo Kk

Also Published As

Publication number Publication date
JPS54175223U (ro) 1979-12-11

Similar Documents

Publication Publication Date Title
US4027242A (en) Double superheterodyne multichannel receiver with a phase-locked loop frequency synthesizer
JP4354637B2 (ja) 複数の変調フォーマットを使用している伝送された信号を共通の中間周波数範囲に周波数逓降変換する方法および装置
JP4484321B2 (ja) 送受信機
EP0798880B1 (en) Method for generating frequencies in a direct conversion transceiver of a dual band radio communication system, a direct conversion transceiver of a dual band radio communication system and the use of this method and apparatus in a mobile station
US5319799A (en) Signal oscillation method for time-division duplex radio transceiver and apparatus using the same
US6243569B1 (en) Direct conversion circuit for radio frequency signals
KR100224102B1 (ko) 이중 대역 셀룰러 전화에 이용되는 중간주파수 선택장치 및 방법
EP0581573A1 (en) Universal radio telephone
US6374093B1 (en) Shifting of frequency range and bandwidth of receivers using a mixer attenuating the image frequency
JPH1032520A (ja) ２つの周波数帯域の無線周波数信号を送受信する送受信装置
EP0529767B1 (en) Digital radio communication apparatus
US5319675A (en) Quadrature modulation circuit
US6697606B1 (en) Transceiver and a telecommunication system having a transceiver
US6078790A (en) Radio frequency generator for a radio communication system
JPS6230353Y2 (ro)
KR20010008695A (ko) 중간주파수 공유 듀얼 모드 이동 단말기
US4186343A (en) Synchronous frequency synthesis method for a radio trnsmitter-receiver
JPS6037659B2 (ja) 多重チヤンネル通信装置
JPH10107677A (ja) 送受信装置
US4095183A (en) Tuning circuit
US4185240A (en) Channel selector system
KR910005652B1 (ko) 동시 쌍방향 fm 송수신기
RU2003124761A (ru) Способ управления просачиванием сигнала гетеродина в методах прямого преобразования
JPH09298482A (ja) ディジタル方式携帯電話機
JPS593631Y2 (ja) 複バンド自動周波数シンセサイザ送受信機