RSSGB2RS Propagation News

Propagation News – 2 August 2015

| July 31, 2015

HF propagation conditions during last weekend’s IOTA contest were pretty dire. This was due to a perfect storm of typical summer conditions, a fairly low sunspot count and poor geomagnetic conditions, reflected in a Kp index of three. This was due to the arrival of material from a coronal mass ejection and the onset of […]

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Propagation News – 26 July 2015

| July 24, 2015

This week had seen reasonably settled conditions until the geomagnetic Kp index hit five on Thursday 23rd, thanks to a glancing blow from a solar coronal mass ejection. The solar flux index fell below 100 as well. If we look at the smoothed solar flux and sunspot data we can see we are now exiting […]

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Propagation News – 19 July 2015

| July 17, 2015

The sun continues to be unsettled as we slide down from the peak of solar cycle 24. This is to be expected as the downward portion of any cycle tends to throw up more solar flares and coronal mass ejections. The 12th and 13th were quite unsettled, with the Kp index reaching five on Monday […]

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Propagation News – 12 July 2015

| July 10, 2015

The sun was remarkably well-behaved during the first half of the week with few solar flares of note. The Kp index remained around one or two, apart from two excursions to three on the 7th and 9th. The solar flux index was, as predicted, around 125-135 all week. Conditions will remain very similar next week […]

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Propagation News – 5 July 2015

| July 3, 2015

As predicted, this week the sun has been more settled. The solar flux index has been around the 100 mark and the Kp index has not risen above three. Nevertheless, we are still in the summer HF doldrums and apart from sporadic E openings on the higher HF bands conditions remain fairly lacklustre. The optimum […]

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Propagation News – 28 June 2015

| June 26, 2015

What a week it has been in terms of solar activity and its effects on HF propagation. We’ve had everything thrown at us. On Sunday we started with a series of strong M-class X-ray flares. One of these resulted in a full halo coronal mass ejection. The halo effect observed means the CME was coming […]

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