GB313176A - Improvements in methods of and means for radio broadcasting - Google Patents
Improvements in methods of and means for radio broadcastingInfo
- Publication number
- GB313176A GB313176A GB17609/29A GB1760929A GB313176A GB 313176 A GB313176 A GB 313176A GB 17609/29 A GB17609/29 A GB 17609/29A GB 1760929 A GB1760929 A GB 1760929A GB 313176 A GB313176 A GB 313176A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zones
- reception
- wave
- lengths
- 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
- 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
- H04B7/12—Frequency diversity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Abstract
313,176. Lorenz Akt.-Ges., C. June 9, 1928, [Convention date]. Transmitting systems; fa d i n g , preventing.- Short-wave broadcasting is effected simultaneously on a number of different wave-lengths or by aerials that differ as regards the angle of vertical radiation in such a way that zones of non-reception for one transmission are filled up by zones of good reception for the other transmissions. As indicated in the diagram, one wavelength is well received in the zones I around the transmitting-station S, another in the zones II, and others in the zones III, IV. The wavelengths may be varied according to the time of day, or additional wave-lengths may be used. As each transmitter is only intended to give reception in its optimum zone, only low power is required.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE313176X | 1928-06-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB313176A true GB313176A (en) | 1930-05-01 |
Family
ID=6139096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17609/29A Expired GB313176A (en) | 1928-06-09 | 1929-06-07 | Improvements in methods of and means for radio broadcasting |
Country Status (4)
Country | Link |
---|---|
US (1) | US1798415A (en) |
FR (1) | FR676368A (en) |
GB (1) | GB313176A (en) |
NL (1) | NL28735C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2177875A (en) * | 1985-07-08 | 1987-01-28 | Philips Electronic Associated | Radio transmission system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1091623B (en) * | 1956-08-24 | 1960-10-27 | Siemens Ag | Messaging system |
US5303259A (en) * | 1991-11-07 | 1994-04-12 | Loveall Peter S | Frequency-hopped electronic signal transmitter |
-
0
- NL NL28735D patent/NL28735C/xx active
-
1929
- 1929-06-07 GB GB17609/29A patent/GB313176A/en not_active Expired
- 1929-06-07 FR FR676368D patent/FR676368A/en not_active Expired
- 1929-06-29 US US374677A patent/US1798415A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2177875A (en) * | 1985-07-08 | 1987-01-28 | Philips Electronic Associated | Radio transmission system |
Also Published As
Publication number | Publication date |
---|---|
NL28735C (en) | 1900-01-01 |
FR676368A (en) | 1930-02-21 |
US1798415A (en) | 1931-03-31 |
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