GB494263A - Improvements in or relating to radio direction finding installations - Google Patents
Improvements in or relating to radio direction finding installationsInfo
- Publication number
- GB494263A GB494263A GB1173537A GB1173537A GB494263A GB 494263 A GB494263 A GB 494263A GB 1173537 A GB1173537 A GB 1173537A GB 1173537 A GB1173537 A GB 1173537A GB 494263 A GB494263 A GB 494263A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- aerial
- ray
- receiver
- condenser
- 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
- 238000009434 installation Methods 0.000 title abstract 2
- 230000008878 coupling Effects 0.000 abstract 3
- 238000010168 coupling process Methods 0.000 abstract 3
- 238000005859 coupling reaction Methods 0.000 abstract 3
- 238000004804 winding Methods 0.000 abstract 3
- 230000000694 effects Effects 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
494,263. Directive wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and FALLOON, S. W. H. W. April 23, 1937, No. 11735. [Class 40 (v)] In a radio direction-finding installation in which the direction is indicated on a cathode-ray screen, the cathode-ray is made to travel a circular path in synchronism with a continuously rotatable wave collector, and when the signal input differs from a predetermined limiting magnitude, the cathode-ray makes a radial deflection, thus indicating the direction of the received signal. The aerial system may comprise two parallel opposed frames rotating about an axis midway between them. In Fig. 1, a double condenser 4 is connected in parallel across the opposed frames 1., 2 and is tuned through a vertical operating rod 5. The input signals across the condenser 4 are coupled from the shielded leads 7, 8, which rotate with the aerial, to the stationary receiver 13 through condenser couplings 9, 11 and 10, 12. Frictional coupling (brushes and slip rings) or inductive coupling may be employed. The receiver 13 includes a non-rectilinear device, e.g. a valve stage operating at grid saturation, so that the receiver output is constant over a wide range of input signals above a predetermined value. This output is applied to the " signal winding " 19b of the cathode-ray tube 18 and a constant-current source 22 is connected to the " radius winding " 19a such that the deflection effects are opposed. The two windings are rotated in synchronism with the aerial so that the cathode-ray traces out a small circle and makes a deflection when the receiver output drops below the predetermined value corresponding to the aerial being in a zero signal position with respect to the station being received. A rotating loop gives two such minima, Fig. 6, but the system may be used with the rotating goniometer of a Bellini- Tosi or Adcock system combined with an open aerial, in which case the 180‹ ambiguity is removed. Specification 468,918 is referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1173537A GB494263A (en) | 1937-04-23 | 1937-04-23 | Improvements in or relating to radio direction finding installations |
| FR836831D FR836831A (en) | 1937-04-23 | 1938-04-19 | Improvements to direction-finding installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1173537A GB494263A (en) | 1937-04-23 | 1937-04-23 | Improvements in or relating to radio direction finding installations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB494263A true GB494263A (en) | 1938-10-24 |
Family
ID=9991706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1173537A Expired GB494263A (en) | 1937-04-23 | 1937-04-23 | Improvements in or relating to radio direction finding installations |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR836831A (en) |
| GB (1) | GB494263A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2483266A (en) * | 1945-09-08 | 1949-09-27 | Liquidometer Corp | Electron tube type transmitter |
| US2500552A (en) * | 1942-08-13 | 1950-03-14 | Rca Corp | Electronic indicator system for radar with spinning antenna or the like |
| US2629866A (en) * | 1942-09-19 | 1953-02-24 | Robert M Page | Position indicating apparatus |
| US2631276A (en) * | 1945-07-09 | 1953-03-10 | Leland J Haworth | Radio direction finder |
| US2799856A (en) * | 1949-12-05 | 1957-07-16 | Bozas Guy Du Bourg De | Radiogoniometer |
| US2869027A (en) * | 1942-06-26 | 1959-01-13 | Raytheon Mfg Co | Signalling apparatus |
-
1937
- 1937-04-23 GB GB1173537A patent/GB494263A/en not_active Expired
-
1938
- 1938-04-19 FR FR836831D patent/FR836831A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2869027A (en) * | 1942-06-26 | 1959-01-13 | Raytheon Mfg Co | Signalling apparatus |
| US2500552A (en) * | 1942-08-13 | 1950-03-14 | Rca Corp | Electronic indicator system for radar with spinning antenna or the like |
| US2629866A (en) * | 1942-09-19 | 1953-02-24 | Robert M Page | Position indicating apparatus |
| US2631276A (en) * | 1945-07-09 | 1953-03-10 | Leland J Haworth | Radio direction finder |
| US2483266A (en) * | 1945-09-08 | 1949-09-27 | Liquidometer Corp | Electron tube type transmitter |
| US2799856A (en) * | 1949-12-05 | 1957-07-16 | Bozas Guy Du Bourg De | Radiogoniometer |
Also Published As
| Publication number | Publication date |
|---|---|
| FR836831A (en) | 1939-01-26 |
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