RSSGB2RS Propagation News

Propagation News – 30 April 2017

| April 28, 2017

Last week saw some unsettled conditions due to the effects of a coronal hole. Its associated high speed solar wind stream actually hit the Earth a day earlier than predicted, resulting in poor HF conditions during the International Marconi Day event on Saturday, 21 April. The planetary K-index hit six the night before and we […]

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Propagation News – 23 April 2017

| April 21, 2017

HF propagation last week was good in parts. There were days when even 20 metres seemed almost devoid of signals, but others when the band really shone. For example, for well-equipped stations 3D2AG on Rotuma Island near Fiji was workable on both CW and RTTY at times on 20 metres. This was remarkable considering the […]

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Propagation News – 16 April 2017

| April 13, 2017

Last week was a mixed bag again in terms of HF propagation. While the solar flux index was stuck in the mid 70s, geomagnetic disturbances due to coronal hole effects made their mark. The K index hit four on Tuesday and brought a pre-auroral enhancement. With the critical frequency over the UK almost reaching 7MHz, […]

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Propagation News – 9 April 2017

| April 7, 2017

A large sunspot group pushed the solar flux index to 112 this week, which was largely unpredicted. However, unsettled geomagnetic conditions reigned again with the K index hitting five on the fourth. The activity from sunspot region 2644 also brought a number of solar flares, and it will be interesting to see if they reoccur […]

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Propagation News – 2 April 2017

| March 31, 2017

Last week was a mixed bag. As predicted we had geomagnetic storming, thanks to the effects of a large coronal hole and its associated high speed solar wind stream, but we also had some good HF conditions at times. With the solar flux in the low 80s, propagation was dominated by the impact of solar […]

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Propagation News – 26 March 2017

| March 24, 2017

Last week’s predicted geomagnetic storm materialised on cue, sending the K index up to five on Tuesday. The storming continued right through Wednesday into Thursday. There was an initial ionospheric enhancement late on Tuesday, but it didn’t last long. Maximum useable frequencies were then adversely affected on Wednesday with noisy bands and even 20 metres […]

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