RSSGB2RS Propagation News

Propagation News – 4 June 2023

| June 2, 2023

We had a relatively calm period last week with the Kp index remaining below three and plenty of sunspots. Although we started the week with the Solar Flux Index in the low 150s, it quickly picked up to reach 161 by Thursday. As a result, there was DX to be had, although most of the […]

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Propagation News – 28 May 2023

| May 26, 2023

The Sun currently has an equal number of spots in both its Northern and Southern hemispheres. The Solar Flux Index was consistently in the 150 to 160s range last week, with a total of eight M-class flares. We had unsettled geomagnetic conditions on the 21 and 22 May when the Kp index hit six, but […]

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Propagation News – 21 May 2023

| May 19, 2023

After last week’s NOAA prediction that we would have settled geomagnetic conditions all week, it seems they were right! The Kp index never got above three – a miracle given the recent disruption due to coronal mass ejections and coronal holes. The proton flux from the Sun has declined as well. However, an M9 solar […]

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Propagation News – 14 May 2023

| May 12, 2023

Our topsy-turvy world of HF propagation continued last week with geomagnetic storms, solar flares, coronal mass ejections, proton events and more. The good news is that the solar flux index was at 170 by Thursday, but the bad news was that we had two episodes where the Kp index hit five and there were at […]

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Propagation News – 7 May 2023

| May 5, 2023

Next week will see the Sun presenting with four large sunspots groups that are rotating to be Earth-facing, so look out for trouble. Just as the UK weather takes a turn for the worse, we expect the space weather to be unpredictable too! Active regions 3293, 3294, 3296 and 3297 look dark and are looming […]

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Propagation News – 30 April 2023

| April 28, 2023

What a busy week we’ve just had! It started with a massive G4 geomagnetic storm that saw the Kp index rise to eight with aurora visible as far south as Cornwall and the Channel Islands. This was due to a coronal mass ejection from a filament eruption on 21 April. The 6m band came to […]

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