GB352463A - Improvements in or relating to radio direction finding apparatus - Google Patents
Improvements in or relating to radio direction finding apparatusInfo
- Publication number
- GB352463A GB352463A GB1117730A GB1117730A GB352463A GB 352463 A GB352463 A GB 352463A GB 1117730 A GB1117730 A GB 1117730A GB 1117730 A GB1117730 A GB 1117730A GB 352463 A GB352463 A GB 352463A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- range
- coil
- coils
- ranges
- 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
- 238000010586 diagram Methods 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)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
352,463. Directive wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and WOODS, F., 8, Atwood Avenue, Richmond, Surrey. April 8, 1930, No. 11177. [Class 40 (v).] In a Bellini-Tosi system designed to operate over a plurality of wave-length ranges, loading reactances are used in conjunction with the frame circuits in such a way that when the system is being used on any one range, the resonance frequency of the aerial system is within another range. As shown, in an arrangement having two wavelength ranges, the fixed loops AF, PS feed fixed goniometer coils A1, F1 and P1, S1 respectively and the search coil SC is in circuit with a tuning condenser SCC and coils CCA1 and AC, the former of which is coupled to a coil CCA connected to an open aerial OA and earth through a reversing switch RS, the latter being coupled to a coil AC1 leading to the amplifier. Fixed and variable loading capacities FC and VC are adapted to be switched across the goniometer coils for one wavelength range by an earthed rod SL which also operates the switch RS and the rangechanging switch of the amplifier. The reversal of the cardioid diagram which would take place on changing from one range to the other is avoided by the operation of switch RS. Other phasereversing means may alternatively be employed or the search coil circuit or an intermediate circuit may be rendered aperiodic on one of the ranges by short-circuiting the condenser SCC.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE378890D BE378890A (en) | 1930-04-08 | ||
| GB1117730A GB352463A (en) | 1930-04-08 | 1930-04-08 | Improvements in or relating to radio direction finding apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1117730A GB352463A (en) | 1930-04-08 | 1930-04-08 | Improvements in or relating to radio direction finding apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB352463A true GB352463A (en) | 1931-07-08 |
Family
ID=9981409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1117730A Expired GB352463A (en) | 1930-04-08 | 1930-04-08 | Improvements in or relating to radio direction finding apparatus |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE378890A (en) |
| GB (1) | GB352463A (en) |
-
0
- BE BE378890D patent/BE378890A/xx unknown
-
1930
- 1930-04-08 GB GB1117730A patent/GB352463A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE378890A (en) |
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