RSSGB2RS Propagation News

Propagation News – 9 October 2016

| October 7, 2016

Last week the solar flux index didn’t behave as predicted and rose to 99 by Thursday. This was mainly due to the appearance of large sunspot groups 2598 and 2599. There were no major solar flares, only minor C-class events, but unsettled geomagnetic conditions continued thanks to ongoing coronal hole activity. The K-index hit four […]

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Propagation News – 2 October 2016

| September 30, 2016

Last week was dominated by extensive geomagnetic disturbances thanks to ongoing coronal hole activity on the sun. Coronal holes are areas with open magnetic field lines that allow plasma to escape as a high-speed stream. This plasma impacted the Earth causing aurora and unsettled HF conditions, especially on paths over the poles. The K-index was […]

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Propagation News – 25 September 2016

| September 23, 2016

This week saw the solar flux index increase from 80 to 86, but poor ionospheric conditions due to a high-speed solar wind stream dominated the earlier part of the week. The K-index hit five on the 20th but, as predicted, geomagnetic conditions improved slightly towards the end of the week. On the bright side, while […]

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Propagation News – 18 September 2016

| September 16, 2016

The solar flux index followed the NOAA prediction this week, declining to 85 by Thursday. Geomagnetic conditions were regrettably not as settled as we would have liked, with the K-index hitting three at times thanks to a continued high speed solar wind stream from a coronal hole. Luckily, no Earth-directed coronal mass ejections were observed […]

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Propagation News – 11 September 2016

| September 9, 2016

Last weekend saw very unsettled geomagnetic conditions due a large coronal hole across the sun’s equator. This impacted SSB Field Day, with the K-index being pushed as high as four and five, sparking visible auroras at high latitudes and depressed maximum usable frequencies. The solar flux index hung tantalisingly close to 100 during the week, […]

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Propagation News – 4 September 2016

| September 2, 2016

This week brought a glimpse of better things to come. Andy, M0NKR reports he worked VP6J Pitcairn Island on 12 metres and the maximum useable frequency was often above 21MHz earlier in the week. The downside was, as predicted, periods of unsettled geomagnetic conditions, with the K-index hitting four at times and even six on […]

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