RSSGB2RS Propagation News

Propagation News – 26 May 2024

| May 23, 2024

After the extremely unsettled HF conditions on the 10 and 11 May, it was gratifying to see things returning to normal last week. The Kp index has returned to being in the range of 1 to 4 and, with a solar flux index still in the 190s, we have seen some good propagation around the […]

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Propagation News – 19 May 2024

| May 17, 2024

After last weekend’s auroral spectacular it was nice to see the Sun calm down a little and the bands get back to normal. But that didn’t last long. To recap, on Friday 10 May the Kp index shot up to 9, due to the effects of a number of coronal mass ejections, while the HF […]

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Propagation News – 12 May 2024

| May 10, 2024

Disrupted solar conditions continued this week with X-class solar flares aplenty. Four X-class events on the 8 and 9 May prompted coronal mass ejections, which could join together to impact the Earth this weekend. We can expect a strong G3 event with the Kp index rising to 6 and the potential for visible aurora in […]

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Propagation News – 5 May 2024

| May 3, 2024

What a strange week we had; with the solar flux index in the 167 range, falling to 130, conditions should have been reasonable, but the Kp index hit 4 and even 5.33 on the evening of Friday 26 April, which meant propagation on Saturday the 27th was truly dire. Stations taking part in International Marconi […]

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Propagation News – 28 April 2024

| April 26, 2024

We had another week with plenty of sunspots, and HF conditions were quite good in the second half. Earlier, the Kp index reached 3 and 4, which didn’t help maximum useable frequencies, or MUFs for short. For example, on Sunday the 21st, the Kp index rose to 4 and the MUF over a 3,000km path […]

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Propagation News – 21 April 2024

| April 19, 2024

Last week saw a welcome return of sunspots but, unfortunately, it also brought unsettled geomagnetic conditions. By Thursday 18 April the solar flux index was back above 200, hitting 217. Compare that to the previous week’s 131 and you can see that there is a lot more activity. But, with 12 active regions visible, it […]

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