NL54225C - - Google Patents
Info
- Publication number
- NL54225C NL54225C NL54225DA NL54225C NL 54225 C NL54225 C NL 54225C NL 54225D A NL54225D A NL 54225DA NL 54225 C NL54225 C NL 54225C
- Authority
- NL
- Netherlands
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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/04—Details
- G01S3/08—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE208370X | 1937-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL54225C true NL54225C (fr) |
Family
ID=5794196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL54225D NL54225C (fr) | 1937-09-08 |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH208370A (fr) |
| FR (1) | FR842961A (fr) |
| GB (1) | GB507461A (fr) |
| NL (1) | NL54225C (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2422107A (en) * | 1942-07-01 | 1947-06-10 | Rca Corp | Radio direction finder |
| GB1060704A (en) * | 1965-03-02 | 1967-03-08 | Marconi Co Ltd | Improvements in or relating to radio direction finders |
-
0
- NL NL54225D patent/NL54225C/xx active
-
1938
- 1938-09-01 CH CH208370D patent/CH208370A/de unknown
- 1938-09-05 FR FR842961D patent/FR842961A/fr not_active Expired
- 1938-09-07 GB GB26182/38A patent/GB507461A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR842961A (fr) | 1939-06-22 |
| CH208370A (de) | 1940-01-31 |
| GB507461A (en) | 1939-06-15 |