RSSGB2RS Propagation News

Propagation News – 22 May 2022

| May 20, 2022

Solar activity reached a new peak for this cycle this week, with the solar flux index hitting 180 on Thursday the 19th. This was partly down to the very large active region 3014, which is almost big enough to be seen with the naked eye, if suitable precautions are taken. To put this into perspective, […]

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Propagation News – 15 May 2022

| May 13, 2022

Well, it looks like the US Air Force was more accurate than NOAA with their solar flux index forecast last week. While the week started with an SFI at 117, by Thursday it had grown to 133. It has been mostly quiet from a geomagnetic point of view with a maximum Kp index of three, […]

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Propagation News – 8 May 2022

| May 6, 2022

Last week was characterised by solar flares. At the time of writing, we have seen more than 50 since the 1st of May, including one high-energy X-class flare. This occurred on the 3rd of May at 1325 hours and caused a radio blackout over much of the Atlantic. Luckily, the Kp index has remained low, […]

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Propagation News – 1 May 2022

| April 29, 2022

A week of high solar flux indices brought good openings on the higher bands. With the SFI consistently above 140 all week—at the time of writing—there have been reports of 10 metre openings well into the evening. As Ian Goodier on the 10m UK Net Facebook group reported: “Tonight on 10m you could mistake the […]

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Propagation News – 24 April 2022

| April 22, 2022

Last week was characterised by solar flares – lots of them! There were numerous strong flares, although the majority occurred in the early hours and so didn’t affect the ionosphere over Europe. Solar flare events can cause short-lived radio blackouts as the energetic photons penetrate deep into the D-layer. Solar activity during the past 30 […]

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Propagation News – 17 April 2022

| April 14, 2022

We had a week with declining solar flux index numbers, but with the ever-present threat of coronal mass ejections. The SFI declined from 101 on Sunday to 96 on Wednesday with the possibility of further falls as the week goes on. A solar filament located near the centre disk of the Sun erupted early Monday […]

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