Where to point antenna for meteor scatter

Nov 18, 2022 · Meteor Scatter is done only on the VHF and UHF bands (6m, 4m, 2m and 70cm). On shortwave, the reflections are also visible, but are masked by other effects. The most commonly used frequency band is 2m. The challenge in radio operation over meteor scatter is that the reflecting ionization tracks exist only for a few seconds up to (in rare ....

The SUWS WebSDR, a popular resource for the Amateur Satellite and 434 MHz High Altitude Balloon communities, has recently been upgraded to support VLF and 49.990 MHz for Meteor Scatter observations.. The SUWS team hope that these new bands will further enhance the capabilities of the WEB SDR, which already covers a large proportion of the 2m, 70cm and.

Meteor scatter occurs when radio signals reflect off the ionized trail left behind by meteors when they enter the atmosphere. This trail is highly RF reflective, so it can allow distant radio stations.

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This paper analyzes the antenna technology for Meteor Scatter communication, and the characteristics of several antenna patterns are analyzed. Anew system which is.

meteor scatter echoes on 143.050MHz when mounted on a 6m mast and pointed to the south east toward the Graves transmitter. 2.4 An assessment of 3 and 7 element Yagi designs Either antenna can be used for detecting meteor echoes. The 3 element is more compact and can be fitted into a car or other small vehicle, which means.

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The two platinum fine wires are housed in a tubular antenna from SFIM company (model T4113). They are more directly exposed to the stream but protected from radiation, which consequently should not have a significant impact. ... which measures the dew point temperature. Absolute, relative and specific humidity are then inferred from dew point.

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We go over how Meteor Scatter works using WSJTx, how to get started, procedures and what it sounds and looks like.

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Introduction. Communicating over great distances via VHF continues to fascinate many amateurs. EME (Earth-Moon-Earth) communication, also known as "moonbounce" and meteor scatter are two well known propagation techniques. The concept is simple: use the moon or the ionized trail of a meteor as a passive reflector to go way beyond line of sight.

Just because you're using MSK144 doesn't mean that it's meteor scatter -- the theoretical limit is on the order of 1500 miles, and that takes great antenna and serious power. I suspect you were seeing some double-hop E-skip -- there has been some in the past 7 days.

key features: covers the mathematical and physical background that is needed to understand electromagnetic radiation and antennas discusses the origin of radiation and provides an in-depth explanation of antenna parameters explores all the necessary steps in antenna analysis allowing the reader to understand and analyze new antenna structures.

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I have decided to focus a bit on 2m meteor scatter. I have an IC-275H and an Arrow 3el antenna mounted about 2 meters above ground, horizontally polarized. I know it works since I can hear a beacon in that direction that I can't hear on my j-pole..

Meteor Scatter capturing problem Rainer #2470 . Hi, As written in my first message about DIY antennas we are facing a problem in regard to scatter capture between two stations. The station are just 4.5 km separated but the difference in height over sea level is between mine, working OK, and the other one about 70 meters.

most of the activity right now is FT8 so if you download the latest wsjtx and park it on 50313 you can get a quick idea. Otherwise your big areas are 50.125 (ssb calling), 50.110 (dx calling), and the 50.050-50.090 (about) beacon band. Most beacons dont overlap freq so even if you can't copy code, if you can figure out the freq you know who it is..

The antennas of R/V Atalante and R/V Meteor are located on the crow's nest, the highest point of the ship, which helps in minimizing interference with other scientific and navigation instruments. The antenna of the R/V Maria S. Merian is located on the higher observation deck below the crow's nest and below the main radar antenna.

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I want to site the antenna at a height of 4m (about 15m above sea level all in), with the highest point from there in my preferred direction being 32m asl at a distance of 3.8km, after which it's sea until Kent.

Apr 22, 2020 · Hi Stan, Just because you're using MSK144 doesn't mean that it's meteor scatter -- the theoretical limit is on the order of 1500 miles, and that takes great antenna and serious power..

most of the activity right now is FT8 so if you download the latest wsjtx and park it on 50313 you can get a quick idea. Otherwise your big areas are 50.125 (ssb calling), 50.110 (dx calling), and the 50.050-50.090 (about) beacon band. Most beacons dont overlap freq so even if you can't copy code, if you can figure out the freq you know who it is..

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When a meteor falls, it burns up due to the frictional heatinginthe atmosphere and creates ionized trail. ... Antenna system to detect meteor scatter reflections through skywave propagation.

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This reduces the cost of the entire project to perhaps £60 (GBP) to build an antenna and set up the dongle assuming you have a suitable computer available to run Spectrum Lab. Details of my setup and some useful information about the science of Meteor Scatter detection can be found in a presentation I have given, Meteor Scatter Detection.

most of the activity right now is FT8 so if you download the latest wsjtx and park it on 50313 you can get a quick idea. Otherwise your big areas are 50.125 (ssb calling), 50.110 (dx calling), and the 50.050-50.090 (about) beacon band. Most beacons dont overlap freq so even if you can't copy code, if you can figure out the freq you know who it is..

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The following information may be used to setup a simple but effective forward scatter meteor radar system and collect useful scientific data. Most amateur forward scatter radar systems.

Not the most spectacular meter ping by any stretch, but clearly a ping from Capital, which is receivable on the frequency all the time here. Narration in video.

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ENCYCLOPEDIA. OF CAVES SECOND EDITION This page intentionally left blank ENCYCLOPEDIA OF CAVES SECOND EDITION Editors. WILLIAM B. WHITE The Pennsylvania State University. DAVID C. CULVER American University. AMSTERDAM • BOSTON • HEIDELBERG • LONDON NEW YORK • OXFORD PARIS • SAN DIEGO • SAN FRANCISCO •.

Aug 01, 2007 · The characteristics of an ideal antenna pattern for short- and long-range meteor scatter communication are analyzed. The ideal antenna configuration matches its pattern to the spatial arrival ....

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A. H. Nuttal and G. C. Carter, A Generalized Framework for Power Spectral Estimation, Appendices - Free download as PDF File (.pdf), Text File (.txt) or view presentation slides online. These Appendices, specially the references there in, are very helpful fo any one involved with problems in the field of statistical signal processing.

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distance of 1533 km by way of meteor forward-scatter. Six-element Yagi antennas with 10 dB gain are used both at the transmitting and receiving ends and directed towards the meteoric region at a height of 100 km above the ground midway between the two stations. The meteor echoes are recorded continuously at WaItair using a Brush recorder during.

Dec 12, 2014 · As meteors enter the earth’s atmosphere, which happens 24/7, they ionize the E layer of the ionosphere. This allows radio signals to be refracted back to earth and hopefully onto someone’s antenna who is listening for you. The signals can last from seconds to microseconds. So it requires some special techniques to facilitate the communication..

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Troposcatter occurs when two stations both point their antennas at a common volume in the troposphere, and that volume of the troposphere redirects the signal directed into it by one station towards the receiving antenna of the second station. The useful range of troposcatter is roughly 100 to 700 km, and it can be used from 144 MHz through 10 GHz.

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