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{"id":94,"date":"2017-06-05T16:33:49","date_gmt":"2017-06-05T23:33:49","guid":{"rendered":"http:\/\/placentia.website\/races\/?page_id=94"},"modified":"2017-08-03T20:56:48","modified_gmt":"2017-08-04T03:56:48","slug":"hf-band-condtions","status":"publish","type":"page","link":"https:\/\/placentia.website\/races\/hf-band-condtions\/","title":{"rendered":"Band Conditions"},"content":{"rendered":"

The emphasis for band conditions, this web page, is typically when radio waves (frequencies) use the ionosphere.<\/p>\n

The ionosphere<\/a> is a layer of the earth’s atmosphere that contains a high concentration of ions and free electrons and is able to reflect radio waves. It lies above the mesosphere and extends from about 50 to 600 miles (80 to 1,000 km) above the earth’s surface.<\/p>\n

The condition of the ionosphere band really can determine how good or bad the resulting radio communications that take place.\u00a0 Because this band is made up of ions and free electrons resulting from the sun radiation, we have found out that the sun’s radiation is not steady but varies.\u00a0 The rotation of the Earth is only one factor upon the ionosphere.\u00a0 Solar storms can also influence the thickness of this band. \u00a0 There is even a eleven year cycle<\/a> day cycle<\/a> and year cycle<\/a>.\u00a0 Typically the lower frequencies called the\u00a0 HF bands have this concern because their radio waves reach this band and can result in being bent back toward Earth.<\/p>\n

Further Reading:<\/strong><\/p>\n