GB284665A - - Google Patents
Info
- Publication number
- GB284665A GB284665A GB2061/28A GB206128A GB284665A GB 284665 A GB284665 A GB 284665A GB 2061/28 A GB2061/28 A GB 2061/28A GB 206128 A GB206128 A GB 206128A GB 284665 A GB284665 A GB 284665A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- stations
- varied
- phase
- transmitting
- 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
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Noise Elimination (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
284,665. Lorenz Akt.-Ges., C. Feb. 3, 1927, [Convention date]. Drawings to Specification. Fading, preventing.-In wireless broadcasting systems of the kind in which a number of stations all using the same wave-length and transmitting the same programme are controlled by a central station, means are provided for overcoming the interference which causes weak or distorted reception in certain zones. With this object, the phase, amplitude, or frequency of one or more of the transmitting stations is periodically varied at a supersonic frequency. The frequency or phase may be varied by means of iron-cored choke coils in the transmission circuits, the saturation of which is varied by an alternating current of the desired frequency; or rotary coils or condensers may be used. Amplitude variations can be effected by modulating the carrier wave of one or more of the stations by a supersonic frequency.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE284665T | 1927-02-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB284665A true GB284665A (en) | 1928-06-14 |
Family
ID=31893862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2061/28A Expired GB284665A (en) | 1927-02-03 | 1928-01-21 |
Country Status (3)
Country | Link |
---|---|
US (1) | US1877858A (en) |
FR (1) | FR647542A (en) |
GB (1) | GB284665A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2545511A (en) * | 1945-05-02 | 1951-03-20 | Brinkley John Raymond | Radio communication system |
BE471797A (en) * | 1945-08-27 | |||
US2579882A (en) * | 1947-06-05 | 1951-12-25 | Rca Corp | Interference suppression in radio signaling systems |
US2647257A (en) * | 1948-01-22 | 1953-07-28 | Sperry Corp | Nonambiguous cycle matching system |
US3004153A (en) * | 1957-01-04 | 1961-10-10 | Alford Andrew | Circuit for use with a plurality of antennas |
JPS547204A (en) * | 1977-06-20 | 1979-01-19 | Nippon Telegr & Teleph Corp <Ntt> | Simultaneous transmission system for plural stations |
-
1928
- 1928-01-20 FR FR647542D patent/FR647542A/en not_active Expired
- 1928-01-21 GB GB2061/28A patent/GB284665A/en not_active Expired
- 1928-01-24 US US249158A patent/US1877858A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US1877858A (en) | 1932-09-20 |
FR647542A (en) | 1928-11-26 |
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