GB501106A - Improvements in radio signalling systems - Google Patents
Improvements in radio signalling systemsInfo
- Publication number
- GB501106A GB501106A GB14048/38A GB1404838A GB501106A GB 501106 A GB501106 A GB 501106A GB 14048/38 A GB14048/38 A GB 14048/38A GB 1404838 A GB1404838 A GB 1404838A GB 501106 A GB501106 A GB 501106A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- focus
- receiver
- intermediate frequencies
- signalling systems
- 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
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
501,106. Multiplex wireless signalling. PUNGS, L. May 11, 1938, No. 14048. Convention date, May 11, 1937. Drawings, to Specification. [Class 40 (v)] A plurality of transmitters of approximately the same frequency use a common aerial and reflector system and are modulated by different intermediate frequencies. At the common receiver the intermediate frequencies are separated to form the individual channels. In one embodiment, two mutually perpendicular transmitting dipole aerials arranged with their axis at 45‹ to the vertical are arranged at the focus of a reflector and at the receiver a single dipole is arranged vertically at the focus of a similar reflector.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE205377X | 1937-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB501106A true GB501106A (en) | 1939-02-21 |
Family
ID=5786896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14048/38A Expired GB501106A (en) | 1937-05-11 | 1938-05-11 | Improvements in radio signalling systems |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2257917A (en) |
| CH (1) | CH205377A (en) |
| FR (1) | FR837756A (en) |
| GB (1) | GB501106A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2458124A (en) * | 1944-11-14 | 1949-01-04 | Raymond M Wilmotte | Synchronous frequency broadcasting |
-
1938
- 1938-05-09 CH CH205377D patent/CH205377A/en unknown
- 1938-05-09 FR FR837756D patent/FR837756A/en not_active Expired
- 1938-05-11 GB GB14048/38A patent/GB501106A/en not_active Expired
- 1938-05-14 US US207921A patent/US2257917A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH205377A (en) | 1939-06-15 |
| US2257917A (en) | 1941-10-07 |
| FR837756A (en) | 1939-02-20 |
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