GB363561A - Radio beacon - Google Patents
Radio beaconInfo
- Publication number
- GB363561A GB363561A GB6796/31A GB679631A GB363561A GB 363561 A GB363561 A GB 363561A GB 6796/31 A GB6796/31 A GB 6796/31A GB 679631 A GB679631 A GB 679631A GB 363561 A GB363561 A GB 363561A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tuned
- circuits
- periodically
- transmitted
- condensers
- 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
-
- 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)
- Near-Field Transmission Systems (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Selective Calling Equipment (AREA)
- Burglar Alarm Systems (AREA)
Abstract
363,561. Directive wireless signalling. DU BOURG DE BOZAS, G., 216, Boulevard St-Germain, Paris. March 4, 1931, No. 6796. Convention date, Oct. 18, 1930. [Class 40 (v).] A beacon transmitter comprises a plurality of loop aerials whose circuits are supplied with a common radio-frequency and are tuned and detuned periodically to produce signals. As shown the mutually perpendicular loops 20, 21 are in circuit with coils 12, 13 coupled to the valve generator 25 .. 30. The loop circuits are tuned periodically by rotating condensers 18, 19 preferably driven by the same motor. Constructions of condensers are described to enable dots to be transmitted from one aerial in the intervals between dashes transmitted from the other, or different audio frequency modulations may be produced thereby. The valve 25 may have its filament and plate circuits energized from an alternating source 27 of intermediate frequency, the receiver being provided with a filter tuned thereto to reduce interference with the beacon signal.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR592439X | 1930-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB363561A true GB363561A (en) | 1931-12-24 |
Family
ID=8964829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6796/31A Expired GB363561A (en) | 1930-10-18 | 1931-03-04 | Radio beacon |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1854733A (en) |
| DE (1) | DE592439C (en) |
| FR (3) | FR686863A (en) |
| GB (1) | GB363561A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE754630C (en) * | 1934-01-27 | 1953-06-08 | Marconi Wireless Telegraph Co | Device for the alternating release and blocking of energy transmission on a high-frequency line |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL59218C (en) * | 1940-01-04 | |||
| DE879717C (en) * | 1940-01-04 | 1953-06-15 | Aga Baltic Aktiebolag | Device for periodic antenna switching in radio beacons for field strength comparison |
| FR1458197A (en) * | 1965-06-02 | 1966-03-04 | Montages Electr Atel | Mechanical modulator and applications |
-
1929
- 1929-03-09 FR FR686863D patent/FR686863A/en not_active Expired
- 1929-12-16 FR FR38510D patent/FR38510E/en not_active Expired
-
1930
- 1930-10-18 FR FR40280D patent/FR40280E/en not_active Expired
-
1931
- 1931-02-24 US US517827A patent/US1854733A/en not_active Expired - Lifetime
- 1931-03-04 GB GB6796/31A patent/GB363561A/en not_active Expired
- 1931-10-18 DE DEB152602D patent/DE592439C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE754630C (en) * | 1934-01-27 | 1953-06-08 | Marconi Wireless Telegraph Co | Device for the alternating release and blocking of energy transmission on a high-frequency line |
Also Published As
| Publication number | Publication date |
|---|---|
| FR38510E (en) | 1931-06-13 |
| US1854733A (en) | 1932-04-19 |
| FR686863A (en) | 1930-07-31 |
| FR40280E (en) | 1932-06-08 |
| DE592439C (en) | 1934-02-10 |
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