FR2390859A1 - Emetteur-recepteur de telecommunication et systeme de radiotelephonie utilisant un tel emetteur-recepteur - Google Patents
Emetteur-recepteur de telecommunication et systeme de radiotelephonie utilisant un tel emetteur-recepteurInfo
- Publication number
- FR2390859A1 FR2390859A1 FR7714776A FR7714776A FR2390859A1 FR 2390859 A1 FR2390859 A1 FR 2390859A1 FR 7714776 A FR7714776 A FR 7714776A FR 7714776 A FR7714776 A FR 7714776A FR 2390859 A1 FR2390859 A1 FR 2390859A1
- Authority
- FR
- France
- Prior art keywords
- arrangement
- send
- receive
- dual frequency
- telecommunications connections
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7714776A FR2390859A1 (fr) | 1977-05-13 | 1977-05-13 | Emetteur-recepteur de telecommunication et systeme de radiotelephonie utilisant un tel emetteur-recepteur |
ES469769A ES469769A1 (es) | 1977-05-13 | 1978-05-12 | Aparato emisor-receptor de telecomunicacion perfeccionado y sistema de telecomunicacion que lo incorpora |
NL7805168A NL7805168A (nl) | 1977-05-13 | 1978-05-12 | Zend-ontvangstinrichting. |
DE19782821003 DE2821003C2 (de) | 1977-05-13 | 1978-05-12 | Sende-Empfangs-Anordnung für Fernmeldeverbindungen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7714776A FR2390859A1 (fr) | 1977-05-13 | 1977-05-13 | Emetteur-recepteur de telecommunication et systeme de radiotelephonie utilisant un tel emetteur-recepteur |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2390859A1 true FR2390859A1 (fr) | 1978-12-08 |
FR2390859B1 FR2390859B1 (nl) | 1982-02-19 |
Family
ID=9190805
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7714776A Granted FR2390859A1 (fr) | 1977-05-13 | 1977-05-13 | Emetteur-recepteur de telecommunication et systeme de radiotelephonie utilisant un tel emetteur-recepteur |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2821003C2 (nl) |
ES (1) | ES469769A1 (nl) |
FR (1) | FR2390859A1 (nl) |
NL (1) | NL7805168A (nl) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2152333B (en) * | 1983-12-27 | 1988-02-03 | United Technologies Corp | Full-duplex, electrically switched microwave transceiver |
DE4015195A1 (de) * | 1990-05-11 | 1991-11-14 | Goa General Office Activities | Zusatzgeraet fuer ein funkgeraet zum erzeugen und/oder empfangen eines selektiven sende- bzw. empfangssignals |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1537007A1 (de) * | 1967-06-19 | 1969-07-31 | Funkwerk Dresden Veb | System zur Bildung von Gruppen- und/oder Sammelrufmoeglichkeiten bei Impulscode-Selektrivrufeinrichtungen |
US3564147A (en) * | 1968-04-05 | 1971-02-16 | Communications Satellite Corp | Local routing channel sharing system and method for communications via a satellite relay |
AT338877B (de) * | 1969-07-23 | 1977-09-26 | Sits Soc It Telecom Siemens | Fernmeldesystem mit einer anzahl von zweirichtungskanalen, von denen jeweils einer nur wahrend der dauer der verbindung zwischen wenigstens zwei sende-empfangs-geraten belegt ist |
-
1977
- 1977-05-13 FR FR7714776A patent/FR2390859A1/fr active Granted
-
1978
- 1978-05-12 ES ES469769A patent/ES469769A1/es not_active Expired
- 1978-05-12 NL NL7805168A patent/NL7805168A/nl unknown
- 1978-05-12 DE DE19782821003 patent/DE2821003C2/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2821003A1 (de) | 1978-11-23 |
ES469769A1 (es) | 1979-01-16 |
DE2821003C2 (de) | 1986-01-23 |
NL7805168A (nl) | 1978-11-15 |
FR2390859B1 (nl) | 1982-02-19 |
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