GB458307A - System for signalling by light-rays and wireless waves - Google Patents
System for signalling by light-rays and wireless wavesInfo
- Publication number
- GB458307A GB458307A GB827335A GB827335A GB458307A GB 458307 A GB458307 A GB 458307A GB 827335 A GB827335 A GB 827335A GB 827335 A GB827335 A GB 827335A GB 458307 A GB458307 A GB 458307A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signalling
- generator
- frequency
- supply
- fodor
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
- H05B39/09—Circuit arrangements or apparatus for operating incandescent light sources in which the lamp is fed by pulses
Landscapes
- Selective Calling Equipment (AREA)
- Optical Communication System (AREA)
Abstract
458,307. Visible signalling-apparatus. FODOR, J., Fodor Communication Research Laboratories, Mount Park, Harrow, Middlesex. March 16, 1935, No. 8273. [Class 118 (ii)] [See also Group XL] A common high-frequency generator is used to supply both a wireless transmitter and a luminous discharge tube or signal lamp, each signalling-device being controlled or modulated by Morse or telephony. The wireless signals are picked up on an ordinary receiver, and the visible signals are either read by the eye or received by means of photo-electric cells. The system is particularly suitable for aircraft navigation near an aerodrome, or for inter-communication between machines in the air. As shown in Fig. 2, a valve-generator 4 supplies high-frequency oscillations both to an aerial A and to a signal lamp L. Modulating-means 1, 2 are inserted in each circuit, and a control device 3 is inserted in the common supply-line. In Fig. 6 a separate generator 6, 7 is used for each signalling device. The output from the same generator may be fed through separate channels, with different degrees of amplification, to the transmitting aerial and lamp. The frequency may be stepped-up in one of the supply channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB827335A GB458307A (en) | 1935-03-16 | 1935-03-16 | System for signalling by light-rays and wireless waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB827335A GB458307A (en) | 1935-03-16 | 1935-03-16 | System for signalling by light-rays and wireless waves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB458307A true GB458307A (en) | 1936-12-16 |
Family
ID=9849326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB827335A Expired GB458307A (en) | 1935-03-16 | 1935-03-16 | System for signalling by light-rays and wireless waves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB458307A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2279836A (en) * | 1993-06-18 | 1995-01-11 | Allseas Eng Bv | Underwater communications |
-
1935
- 1935-03-16 GB GB827335A patent/GB458307A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2279836A (en) * | 1993-06-18 | 1995-01-11 | Allseas Eng Bv | Underwater communications |
| GB2279836B (en) * | 1993-06-18 | 1997-12-10 | Allseas Eng Bv | Method of and system for communication under water |
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