GB405727A - Directional radio transmitting arrangements particularly for use with ultra-short waves - Google Patents
Directional radio transmitting arrangements particularly for use with ultra-short wavesInfo
- Publication number
- GB405727A GB405727A GB24496/32A GB2449632A GB405727A GB 405727 A GB405727 A GB 405727A GB 24496/32 A GB24496/32 A GB 24496/32A GB 2449632 A GB2449632 A GB 2449632A GB 405727 A GB405727 A GB 405727A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflectors
- relays
- letter
- ultra
- transmitted
- 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)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
- Transmitters (AREA)
- Toys (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
405,727. Directive wireless signalling. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. Sept. 2, 1932, No. 24496. Convention date, April 19. [Class 40 (v).] In a direction finding system in which two angularly displaced beams are radiated, the field strengths of which are to be compared, a dipole aerial E is continuously energized from a source S and dipole reflectors R1, R2 are alternately keyed either by making and breaking their circuits by relays M1, M2 energized successively by a motor-driven distributer K, or by detuning. The leads to the relays M1, M2 may be of resistance wire to prevent the passage of H.F. currents and the reflectors, one of which may be omitted, are preferably longer than the aerial. In one embodiment the letter A is transmitted in one direction and the letter N in the other. In a modification a characteristic modulation frequency is transmitted in each direction either by providing a further distributer arranged to modulate the transmitter at one or other of two frequencies depending on the keying of the reflectors, the two frequencies for example being obtained by a cam-controlled two-frequency machine.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL81003D DE577350C (en) | 1932-04-20 | 1932-04-20 | Send arrangement to achieve course lines |
| DEL85653D DE616026C (en) | 1932-04-20 | 1934-04-07 | Send arrangement for achieving course lines according to |
| DE2151922X | 1934-10-05 | ||
| DEL90023D DE659836C (en) | 1934-04-07 | 1936-03-22 | Send arrangement to achieve course lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB405727A true GB405727A (en) | 1934-02-15 |
Family
ID=34069174
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24496/32A Expired GB405727A (en) | 1932-04-20 | 1932-09-02 | Directional radio transmitting arrangements particularly for use with ultra-short waves |
| GB15541/34A Expired GB438804A (en) | 1932-04-20 | 1934-05-24 | Directional radio transmitting arrangements particularly applicable for determining bearings |
| GB16597/35A Expired GB442193A (en) | 1932-04-20 | 1935-06-07 | Improvements in or relating to directive wireless signalling |
| GB27460/35A Expired GB444005A (en) | 1932-04-20 | 1935-10-04 | Directional radio receiving arrangements particularly for use with ultra-short waves |
| GB27468/36A Expired GB472941A (en) | 1932-04-20 | 1936-10-09 | Improvements relating to radio transmitting systems |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15541/34A Expired GB438804A (en) | 1932-04-20 | 1934-05-24 | Directional radio transmitting arrangements particularly applicable for determining bearings |
| GB16597/35A Expired GB442193A (en) | 1932-04-20 | 1935-06-07 | Improvements in or relating to directive wireless signalling |
| GB27460/35A Expired GB444005A (en) | 1932-04-20 | 1935-10-04 | Directional radio receiving arrangements particularly for use with ultra-short waves |
| GB27468/36A Expired GB472941A (en) | 1932-04-20 | 1936-10-09 | Improvements relating to radio transmitting systems |
Country Status (6)
| Country | Link |
|---|---|
| US (3) | US2028510A (en) |
| BE (1) | BE414649A (en) |
| DE (2) | DE577350C (en) |
| FR (7) | FR44877E (en) |
| GB (5) | GB405727A (en) |
| NL (3) | NL46080C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2229733A (en) * | 1938-05-13 | 1941-01-28 | Internat Telephone Dev Co Inc | Antenna structure |
| DE761950C (en) * | 1941-05-10 | 1954-01-18 | Lorenz C Ag | Procedure for course setting by means of frequency-modulated radiation |
| US2439663A (en) * | 1942-02-26 | 1948-04-13 | Hazeltine Research Inc | System for navigating aircraft |
| US2492354A (en) * | 1945-04-09 | 1949-12-27 | Standard Telephones Cables Ltd | Dipole antenna direction finder |
| US2831189A (en) * | 1945-06-23 | 1958-04-15 | Robert J Kemper | Wide band homing system |
-
0
- NL NL38464D patent/NL38464C/xx active
- FR FR741872D patent/FR741872A/fr not_active Expired
- NL NL41765D patent/NL41765C/xx active
- NL NL46080D patent/NL46080C/xx active
- BE BE414649D patent/BE414649A/xx unknown
-
1932
- 1932-04-20 DE DEL81003D patent/DE577350C/en not_active Expired
- 1932-09-02 GB GB24496/32A patent/GB405727A/en not_active Expired
- 1932-10-21 US US638907A patent/US2028510A/en not_active Expired - Lifetime
-
1934
- 1934-04-07 DE DEL85653D patent/DE616026C/en not_active Expired
- 1934-05-17 FR FR44877D patent/FR44877E/en not_active Expired
- 1934-05-18 FR FR44879D patent/FR44879E/en not_active Expired
- 1934-05-24 GB GB15541/34A patent/GB438804A/en not_active Expired
-
1935
- 1935-04-02 US US14212A patent/US2072268A/en not_active Expired - Lifetime
- 1935-04-02 FR FR45994D patent/FR45994E/en not_active Expired
- 1935-06-07 GB GB16597/35A patent/GB442193A/en not_active Expired
- 1935-10-04 US US43486A patent/US2151922A/en not_active Expired - Lifetime
- 1935-10-04 GB GB27460/35A patent/GB444005A/en not_active Expired
- 1935-10-05 FR FR795983D patent/FR795983A/en not_active Expired
-
1936
- 1936-05-14 FR FR47380D patent/FR47380E/en not_active Expired
- 1936-10-07 FR FR47701D patent/FR47701E/en not_active Expired
- 1936-10-09 GB GB27468/36A patent/GB472941A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB442193A (en) | 1936-02-04 |
| FR47380E (en) | 1937-03-25 |
| GB444005A (en) | 1936-03-11 |
| FR45994E (en) | 1936-01-17 |
| US2072268A (en) | 1937-03-02 |
| FR47701E (en) | 1937-06-22 |
| BE414649A (en) | |
| GB472941A (en) | 1937-10-04 |
| NL41765C (en) | |
| US2028510A (en) | 1936-01-21 |
| FR795983A (en) | 1936-03-26 |
| GB438804A (en) | 1935-11-25 |
| DE577350C (en) | 1933-05-30 |
| US2151922A (en) | 1939-03-28 |
| FR44877E (en) | 1935-04-24 |
| FR741872A (en) | 1933-02-22 |
| FR44879E (en) | 1935-04-24 |
| NL38464C (en) | |
| NL46080C (en) | |
| DE616026C (en) | 1935-07-18 |
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