GB507181A - - Google Patents
Info
- Publication number
- GB507181A GB507181A GB507181DA GB507181A GB 507181 A GB507181 A GB 507181A GB 507181D A GB507181D A GB 507181DA GB 507181 A GB507181 A GB 507181A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aerials
- compensated
- rotate
- frame
- aerial
- 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.)
- Active
Links
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- Transmitters (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
507,181. Directive wireless systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and WRIGHT, G. M. Dec. 10, 1937, No. 34314. [Class 40 (v)] In a rotatable-frame aerial direction finder, quadrantal error is compensated by an auxiliary frame 3 geared to the main frame 1 so as to rotate at a 3: 1 velocity ratio in the same direction. The compensation may be adjusted by varying the relative number of turns on the aerials, by shunting one or each of the aerials by an adjustable impedance, or by coupling one or each of the aerials to the receiver through an adjustable transformer. Variation in the tuning with rotation may be compensated by connecting in series with the combined aerial circuit a mutual inductance comprising two coils which rotate with the frames 1 and 3 respectively. According to the Provisional Specification, the invention is also applicable to the radiogoniometer of a Bellini-Tosi system.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB507181A true GB507181A (en) |
Family
ID=1747657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB507181D Active GB507181A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB507181A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITVR20090028A1 (en) * | 2009-03-10 | 2010-09-11 | Microtec Srl | METHOD OF CALIBRATION FOR EQUIPMENT FOR THE DETERMINATION OF THE DEGREE OF HUMIDITY OF PRODUCTS ON THE BASIS OF CAPACITIVE MEASURES, AND DEVICE FOR THE SIMULATION OF THE DIELECTRIC PROPERTIES OF PRODUCTS, SUCH AS WOOD, TO BE USED IN THIS METHOD. |
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0
- GB GB507181D patent/GB507181A/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITVR20090028A1 (en) * | 2009-03-10 | 2010-09-11 | Microtec Srl | METHOD OF CALIBRATION FOR EQUIPMENT FOR THE DETERMINATION OF THE DEGREE OF HUMIDITY OF PRODUCTS ON THE BASIS OF CAPACITIVE MEASURES, AND DEVICE FOR THE SIMULATION OF THE DIELECTRIC PROPERTIES OF PRODUCTS, SUCH AS WOOD, TO BE USED IN THIS METHOD. |
| EP2228641A1 (en) * | 2009-03-10 | 2010-09-15 | MICROTEC S.r.l. | Device and method for calibrating a capacitive moisture content measurement apparatus |
| US8410796B2 (en) | 2009-03-10 | 2013-04-02 | Microtec S.R.L. | Method for calibrating apparatuses for determining the moisture content of products based on capacitive measurements, and device for stimulating the dielectric properties of products, such as wood, for use in this method |
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