FR833743A - Radio transmission systems - Google Patents

Radio transmission systems

Info

Publication number: FR833743A
Authority: FR; France
Prior art keywords: radio transmission; transmission systems; systems; radio; transmission
Prior art date: 1937-02-17
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

Other languages

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Thales SA

Original Assignee

Le Materiel Telephonique Thomson CSF

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.)

1937-02-17

Filing date

1938-02-14

Publication date

1938-10-28

1938-02-14 Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF

1938-10-28 Application granted granted Critical

1938-10-28 Publication of FR833743A publication Critical patent/FR833743A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Radio Transmission System (AREA)
Transmitters (AREA)
Mobile Radio Communication Systems (AREA)

FR833743D 1937-02-17 1938-02-14 Radio transmission systems Expired FR833743A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US126158A US2159647A (en)	1937-02-17	1937-02-17	Diversity transmission

Publications (1)

Publication Number	Publication Date
FR833743A true FR833743A (en)	1938-10-28

Family

ID=22423290

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR833743D Expired FR833743A (en)	1937-02-17	1938-02-14	Radio transmission systems

Country Status (4)

Country	Link
US (1)	US2159647A (en)
DE (1)	DE886773C (en)
FR (1)	FR833743A (en)
GB (1)	GB493679A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2497958A (en) *	1942-05-21	1950-02-21	Rca Corp	Communication system for ultrashort radio waves
US2428582A (en) *	1942-05-21	1947-10-07	Rca Corp	Radio diversity transmitter
NL79489C (en) *	1943-03-13
US2568408A (en) *	1947-05-17	1951-09-18	Rca Corp	Frequency shift diversity transmission system
DE1016326B (en) *	1953-11-07	1957-09-26	Therese Eckert Geb Albrecht	Procedure for avoiding conversation interruptions in radio communications with frequency-modulated carriers
US3078348A (en) *	1959-01-27	1963-02-19	Frank H Mcintosh	Lecture broadcasting system
US4280020A (en) *	1979-01-09	1981-07-21	Essex County Council	Radio telephone system with direct digital carrier modulation for data transmission

1937
- 1937-02-17 US US126158A patent/US2159647A/en not_active Expired - Lifetime
1938
- 1938-01-18 GB GB1671/38A patent/GB493679A/en not_active Expired
- 1938-02-14 FR FR833743D patent/FR833743A/en not_active Expired
- 1938-02-17 DE DEI3348D patent/DE886773C/en not_active Expired

Also Published As

Publication number	Publication date
GB493679A (en)	1938-10-12
US2159647A (en)	1939-05-23
DE886773C (en)	1953-08-17

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