GB474690A - Improvements in radio direction-finding equipments - Google Patents
Improvements in radio direction-finding equipmentsInfo
- Publication number
- GB474690A GB474690A GB1442836A GB1442836A GB474690A GB 474690 A GB474690 A GB 474690A GB 1442836 A GB1442836 A GB 1442836A GB 1442836 A GB1442836 A GB 1442836A GB 474690 A GB474690 A GB 474690A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- cathode
- diode
- trace
- finding
- 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)
- Circuits Of Receivers In General (AREA)
Abstract
474,690. Directive wireless signalling. PLESSEY CO., Ltd., and BAILEY, C. E. G. May 21, 1936, No. 14428. [Class 40 (v)] In direction-finding, in order to prevent signals reflected by the ionosphere from obscuring the directional indication given by the direct wave, a cathode-ray indicator is used, and the receiving circuits are inhibited for a short period after the arrival of each direct impulse so as to remove or diminish the brightness of the trace formed on the fluorescent screen. As shown, a tuned circuit Z in the output circuit of the last H.F. stage V1 is paralleled by a diode V2, the load circuit of which includes a rectifier V3 and resistance R1 shunted by a condenser C2. A connection G applies the built-up voltage across C2 to the control-grid of a cathode-ray tube (not shown), the effect being to allow the direct impulse to form a trace, which is then deleted or diminished by the applied voltage before the reflected signal comes in. A leak resistance R2 then restores the circuit to normal. The circuit shown may be duplicated across a common diode which serves to render the control independent of the strength of the received signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1442836A GB474690A (en) | 1936-05-21 | 1936-05-21 | Improvements in radio direction-finding equipments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1442836A GB474690A (en) | 1936-05-21 | 1936-05-21 | Improvements in radio direction-finding equipments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB474690A true GB474690A (en) | 1937-11-05 |
Family
ID=10041037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1442836A Expired GB474690A (en) | 1936-05-21 | 1936-05-21 | Improvements in radio direction-finding equipments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB474690A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2468058A (en) * | 1943-11-23 | 1949-04-26 | Standard Telephones Cables Ltd | Blocking system for multichannel operation |
| US2477485A (en) * | 1943-11-12 | 1949-07-26 | Gen Electric | Pulse echo beacon transponder |
| US2495690A (en) * | 1945-01-27 | 1950-01-31 | Philco Corp | Echo-triggered radar system |
| US2543068A (en) * | 1945-07-14 | 1951-02-27 | Seddon John Carl | Radio impulse receiver |
| US2883663A (en) * | 1955-03-11 | 1959-04-21 | William J Kessler | Means for direction finding and ranging on atmospherics |
| US3103661A (en) * | 1941-06-27 | 1963-09-10 | Gen Electric | Impulse systems |
-
1936
- 1936-05-21 GB GB1442836A patent/GB474690A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3103661A (en) * | 1941-06-27 | 1963-09-10 | Gen Electric | Impulse systems |
| US2477485A (en) * | 1943-11-12 | 1949-07-26 | Gen Electric | Pulse echo beacon transponder |
| US2468058A (en) * | 1943-11-23 | 1949-04-26 | Standard Telephones Cables Ltd | Blocking system for multichannel operation |
| US2495690A (en) * | 1945-01-27 | 1950-01-31 | Philco Corp | Echo-triggered radar system |
| US2543068A (en) * | 1945-07-14 | 1951-02-27 | Seddon John Carl | Radio impulse receiver |
| US2883663A (en) * | 1955-03-11 | 1959-04-21 | William J Kessler | Means for direction finding and ranging on atmospherics |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2233751A (en) | Frequency variation indicator circuit | |
| US2427523A (en) | Blanking circuit | |
| GB480572A (en) | Improvements in or relating to direction finding radio receivers | |
| GB504744A (en) | Improvements in or relating to navigation aiding radio transmitters | |
| GB473167A (en) | Method of and system for determining positions by means of a rotating radio beacon | |
| US2427191A (en) | Blanking control for radio beacon systems | |
| GB474690A (en) | Improvements in radio direction-finding equipments | |
| US2236015A (en) | Homing impulse direction finder | |
| US2698914A (en) | Fast time constant circuit with clipping diode | |
| US2482128A (en) | Receiver protection circuit | |
| GB520606A (en) | Improvements in or relating to radio direction finders | |
| GB601125A (en) | Improvements in or relating to radar systems | |
| US2398335A (en) | Radio range | |
| US2883663A (en) | Means for direction finding and ranging on atmospherics | |
| US2327641A (en) | Radio compass | |
| US2508983A (en) | System responsive to failure of receivers | |
| GB479689A (en) | Improvements in or relating to radio direction-finding systems | |
| US2679043A (en) | Beacon receiver | |
| US2427657A (en) | Radio direction finding apparatus | |
| US2903680A (en) | Interchannel reception system | |
| GB428557A (en) | Improvements in or relating to television and like apparatus | |
| GB505276A (en) | Control device for radio receiver | |
| GB436856A (en) | Improvements in and relating to radio receivers | |
| GB639686A (en) | Improvements relating to tuning means for mixed radio receivers adapted for amplitude modulation or frequency modulation | |
| GB779886A (en) | Improvements in radar and like apparatus |