FR640689A - Improvements in radio-telehraphic communications - Google Patents
Improvements in radio-telehraphic communicationsInfo
- Publication number
- FR640689A FR640689A FR640689DA FR640689A FR 640689 A FR640689 A FR 640689A FR 640689D A FR640689D A FR 640689DA FR 640689 A FR640689 A FR 640689A
- Authority
- FR
- France
- Prior art keywords
- telehraphic
- communications
- radio
- telehraphic communications
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5429—Applications for powerline communications
- H04B2203/5441—Wireless systems or telephone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5466—Systems for power line communications using three phases conductors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Selective Calling Equipment (AREA)
- Mobile Radio Communication Systems (AREA)
- Transmitters (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US134294A US1962611A (en) | 1926-09-08 | 1926-09-08 | Radio communication |
Publications (1)
Publication Number | Publication Date |
---|---|
FR640689A true FR640689A (en) | 1928-07-19 |
Family
ID=22462695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR640689D Expired FR640689A (en) | 1926-09-08 | 1927-09-08 | Improvements in radio-telehraphic communications |
Country Status (4)
Country | Link |
---|---|
US (1) | US1962611A (en) |
DE (1) | DE545278C (en) |
FR (1) | FR640689A (en) |
GB (1) | GB277353A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2423836A (en) * | 1936-02-11 | 1947-07-15 | Burton G Lake | Ultra high frequency communication system |
US2921979A (en) * | 1957-08-06 | 1960-01-19 | Hafner Theodore | Microwave transmission and receiving systems |
US3142801A (en) * | 1961-09-21 | 1964-07-28 | Siemens Ag Albis | Portable call-signal receiver with power saving means |
US7312694B2 (en) * | 2003-03-14 | 2007-12-25 | Ameren Corporation | Capacitive couplers and methods for communicating data over an electrical power delivery system |
-
1926
- 1926-09-08 US US134294A patent/US1962611A/en not_active Expired - Lifetime
-
1927
- 1927-09-01 DE DER72166D patent/DE545278C/en not_active Expired
- 1927-09-08 FR FR640689D patent/FR640689A/en not_active Expired
- 1927-09-08 GB GB23664/27A patent/GB277353A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB277353A (en) | 1928-07-26 |
DE545278C (en) | 1932-02-27 |
US1962611A (en) | 1934-06-12 |
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