FR2355414A1 - Recepteur radio ondes courtes - Google Patents
Recepteur radio ondes courtesInfo
- Publication number
- FR2355414A1 FR2355414A1 FR7718098A FR7718098A FR2355414A1 FR 2355414 A1 FR2355414 A1 FR 2355414A1 FR 7718098 A FR7718098 A FR 7718098A FR 7718098 A FR7718098 A FR 7718098A FR 2355414 A1 FR2355414 A1 FR 2355414A1
- Authority
- FR
- France
- Prior art keywords
- frequency
- radio receiver
- short wave
- wave radio
- counter
- 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.)
- Granted
Links
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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/02—Indicating arrangements
- H03J1/04—Indicating arrangements with optical indicating means
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Superheterodyne Receivers (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
La présente invention concerne un récepteur radio ondes courtes. Ce récepteur radio comprend, après une antenne 1 et un amplificateur 2, un premier convertisseur de fréquence 3 connecté à un oscillateur local 5 qui comprend un oscillateur à fréquence variable f vl , des oscillateurs de fréquence de référence, des prémélangeurs et des filtres passe-bande. Il est en outre prévu un élément de comptage de fréquence 13 constitué d'un bloc de comptage de fréquence 14 et d'un bloc d'affichage numérique 15. La fréquence reçue peut être affichée numériquement de façon stable et correcte en utilisant un compteur de fréquence à faible vitesse et à bon marché. Application à l'amélioration de la sélectivité et de la stabilité des récepteurs ondes courtes.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6994776A JPS52152108A (en) | 1976-06-14 | 1976-06-14 | Receiver |
JP8051076A JPS535912A (en) | 1976-07-06 | 1976-07-06 | Radio receiver |
JP8050976A JPS5847098B2 (ja) | 1976-07-06 | 1976-07-06 | ラジオ受信機 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2355414A1 true FR2355414A1 (fr) | 1978-01-13 |
FR2355414B1 FR2355414B1 (fr) | 1983-01-14 |
Family
ID=27300190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7718098A Granted FR2355414A1 (fr) | 1976-06-14 | 1977-06-13 | Recepteur radio ondes courtes |
Country Status (4)
Country | Link |
---|---|
US (1) | US4163943A (fr) |
DE (1) | DE2727078A1 (fr) |
FR (1) | FR2355414A1 (fr) |
GB (2) | GB1562977A (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE30949E (en) * | 1976-02-14 | 1982-05-25 | Trio Kabushiki Kaisha | Digital frequency display device |
US4247950A (en) * | 1978-03-13 | 1981-01-27 | Sanyo Electric Co., Ltd. | Display for frequency received by radio receiver |
JPS5919496B2 (ja) * | 1978-04-03 | 1984-05-07 | シャープ株式会社 | 周波数カウンタ |
GB2139440B (en) * | 1983-05-05 | 1986-09-24 | Seiko Instr & Electronics | Temperature measuring device |
US4868886A (en) * | 1988-06-14 | 1989-09-19 | Communication Satellite Corporation | Combined global/spot beam configuration for satellite communications |
JP3461484B2 (ja) * | 2000-04-05 | 2003-10-27 | 埼玉日本電気株式会社 | 無線通信装置及びその無線周波数補正方式 |
CN105680961B (zh) * | 2016-01-14 | 2018-01-23 | 中兵通信科技股份有限公司 | 一种超短波电台接收信号处理电路 |
EP3672177A1 (fr) | 2018-12-20 | 2020-06-24 | GN Hearing A/S | Dispositif auditif ayant une radio à double bande utilisant une fréquence d'image |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR979981A (fr) * | 1942-11-23 | 1951-05-07 | Perfectionnements aux transmissions radio-électriques | |
US3248652A (en) * | 1962-07-20 | 1966-04-26 | Kruse Niels Georg | Stabilized beat frequency oscillator for multi-frequency receiver |
US3244983A (en) * | 1963-03-06 | 1966-04-05 | Gen Dynamics Corp | Continuously tunable direct reading high frequency converter |
US3361976A (en) * | 1964-04-24 | 1968-01-02 | Rca Corp | Frequency correction system |
US3593153A (en) * | 1969-01-07 | 1971-07-13 | Electronic Communications | Narrow bandwidth radio receiver having means to position an rf signal within a steep sided passband filter |
US3701951A (en) * | 1971-01-05 | 1972-10-31 | Emerson Electric Co | Digital indicator for use with tunable electronic apparatus |
US3753119A (en) * | 1971-04-07 | 1973-08-14 | Magnavox Co | Digital tuning indicator |
US3991382A (en) * | 1974-06-11 | 1976-11-09 | Sansui Electric Co., Ltd. | Oscillation frequency control device for a local oscillator |
US3938048A (en) * | 1974-10-10 | 1976-02-10 | Heath Company | Frequency measuring apparatus |
US4114101A (en) * | 1977-02-11 | 1978-09-12 | Trio Kabushiki Kaisha | Digital frequency display device |
US4065727A (en) * | 1976-10-01 | 1977-12-27 | Johnson Sr William Glen | Variable frequency oscillator having programmable digital frequency display |
-
1977
- 1977-06-07 US US05/804,461 patent/US4163943A/en not_active Expired - Lifetime
- 1977-06-13 DE DE19772727078 patent/DE2727078A1/de not_active Ceased
- 1977-06-13 FR FR7718098A patent/FR2355414A1/fr active Granted
- 1977-06-14 GB GB24876/77A patent/GB1562977A/en not_active Expired
- 1977-06-14 GB GB31300/78A patent/GB1562978A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1562977A (en) | 1980-03-19 |
DE2727078A1 (de) | 1978-01-05 |
US4163943A (en) | 1979-08-07 |
FR2355414B1 (fr) | 1983-01-14 |
GB1562978A (en) | 1980-03-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |