GB1024640A - Improvements in radio direction finding instruments - Google Patents
Improvements in radio direction finding instrumentsInfo
- Publication number
- GB1024640A GB1024640A GB4602863A GB4602863A GB1024640A GB 1024640 A GB1024640 A GB 1024640A GB 4602863 A GB4602863 A GB 4602863A GB 4602863 A GB4602863 A GB 4602863A GB 1024640 A GB1024640 A GB 1024640A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compass
- casing
- receiver
- energizes
- nov
- 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)
- Structure Of Receivers (AREA)
Abstract
1,024,640. Radio direction finders. D. C. A. CROWHURST. Nov. 12, 1964 [Nov. 21, 1963], No. 46028/63. Heading H4D. A hand-held self-contained null position direction finding apparatus comprises, within a casing 10, Fig. 1, a ferrite rod directional aerial 18 feeding a transistorized printed circuit radio receiver 20, and a compass 34 whereby the bearing of the received radio signal may be indicated. The aerial 18 is housed in an upper elongated portion 14 of the casing and the receiver and compass are contained in a cylindrical portion 12 of the casing. The receiver, which is powered by batteries 39, has a tuning condenser 22 with movable vanes moved by gear-wheel 24 and a disc 28, the disc protruding through the casing so as to be externally adjustable. The frequency to which the receiver is tuned is indicated on a scale 26 fixed to gear-wheel 24 and viewable through a window 32 having a vertical-cursor inscribed thereon. The compass has a compass and 35 fixed to the magnets 34 and provided with a transparent graduated turned-down edge 36 which is also viewed through window 26. A push button switch 50 energizes a lamp 54 behind the compass and frequency scales so that they may be viewed in the dark. The audio output of the receiver is listened to by means of ear plug 46, two such plugs being provided for noisy external conditions. A switch 52 energizes a beat frequency oscillator so that audible signals can be heated from received C.W. beacon signals. A volume control is also provided. A pair of sights is provided on top of the elongated portion 14 of the casing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4602863A GB1024640A (en) | 1963-11-21 | 1963-11-21 | Improvements in radio direction finding instruments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4602863A GB1024640A (en) | 1963-11-21 | 1963-11-21 | Improvements in radio direction finding instruments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1024640A true GB1024640A (en) | 1966-03-30 |
Family
ID=10439547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4602863A Expired GB1024640A (en) | 1963-11-21 | 1963-11-21 | Improvements in radio direction finding instruments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1024640A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3683384A (en) * | 1969-07-22 | 1972-08-08 | Vec Trak Research & Dev Corp | Radio direction finder |
FR2451588A1 (en) * | 1979-03-14 | 1980-10-10 | Clausin Jacques | Laying of nautical navigation bearing - uses radio-goniometer with coloured LED indicating presence of beacon signal |
-
1963
- 1963-11-21 GB GB4602863A patent/GB1024640A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3683384A (en) * | 1969-07-22 | 1972-08-08 | Vec Trak Research & Dev Corp | Radio direction finder |
FR2451588A1 (en) * | 1979-03-14 | 1980-10-10 | Clausin Jacques | Laying of nautical navigation bearing - uses radio-goniometer with coloured LED indicating presence of beacon signal |
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