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- NOVEMBER NEWS LETTERISOTRON 40 TAKE ADVANTAGE OF THE RELIABILITY OF 40 METERS! THE BEST WAY TO OPERATE HF EASY INSTALLATION EXCELLENT PERFORMANCE DURABLE CONSTRUCTION CC&R FRIENDLY (XYL ALSO) I have been publishing this technical article since January of 2013. For the past 45 years I have manufactured the Isotron Antennas. This also involved helping many with their very difficult installations. Some of the information will be from what we learned solve these problems. Some information will be right from a text book or credible article. SOLAR AFFECTS AND DEFINITIONS PART 1 The subject is a career in itself. However, terms are expressed about radio propagation that may not be clear as to what it is. This article will look at basic principals of this science. THE SUN. The Sun affects everything on earth. It not only gives light so you can read an article, but produces ultraviolet, X-ray, gamma ray and other radiations that hit earth. Every day, solar nuclear reactions are turning hydrogen into helium, releasing a tremendous amount of energy. If the sun's energy was measured in watts, it creates 60 mega-watts per square meter. SOLAR WIND. The Sun is constantly ejecting material from its surface in all directions into space, this is the "solar wind". Under quiet conditions this wind blows around 200 miles per second. Or, 675,000 miles per hour. Taking away about two million tons of solar material each second. Is it about to shrivel up? Hardly, it would take many billions of years for that to happen. It sounds like we can be burned to a crisp at any time. However, the solar wind becomes quite dissipated as it moves out from the Sun. Despite the low density of the wind, it still has an affect on the Earth, especially its magnetic field. EARTH'S MAGNETIC FIELD. If nothing affected it, the field would probably look like a bar magnet, predictable North and South poles. The solar wind alters the shape of the Earth's magnetic field. Compressing it on the side facing the Sun and elongating it on the other side. Much like a tail of a comet. The solar wind is responsible for the shape of a comet also. SUNSPOTS. The Sun is mostly observed as a brilliant fiery ball. However, it has been observed (they probably went blind) that there were darker spots on the surface. There are written records of observation over 2,000 years ago. The Sun is always in a state of change. The change is daily, Sunspots can be observed traveling in clusters across the Sun from east to west. This is due to the rotation of the Sun. It completes a rotation on about 27.5 days. This is from our perspective. SUNSPOT NUMBERS. The count varies, but there is a rough pattern. Approximately 11 years pass from one peak in numbers to the next. The more sunspots the more it affects radio propagation. SMOOTHED SUNSPOT NUMBERS (SSN). This is an average sunspot count over a years time. This average helps to know the trend of the Sunspot activity. This way it helps to know what is coming up. Each smoothed number is an average of 13 months. There is more, much more and I hope to follow it up in the next article. 73, Ralph WD0EJA 07-17 PLEASE FORWARD THIS ARTICLE TO THOSE YOU FEEL WOULD BE INTERESTED. BILAL COMPANY 137 MANCHESTER DR. FLORISSANT, CO. 80816 U.S.A PH/FX: 719/687-0650 OUR EMAIL LIST IS ACQUIRED BY PERSONS WHO HAVE CONTACTED US IN THE PAST. IF YOU DESIRE NOT TO BE CONTACTED PLEASE EMAIL YOUR REQUEST. |
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