RSSGB2RS Propagation News

Propagation News – 12 April 2015

| April 10, 2015

Last week we said that the sun was virtually clear, but spots have a habit of popping up from nowhere. This is exactly what did happen, pushing the solar flux index to a high of 126. Geomagnetic conditions were relatively settled, helping to improve HF propagation. This high declined as the week went on and […]

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Propagation News – 5 April 2015

| April 2, 2015

First, as we are now into April, please ensure that you are using the correct smoothed sunspot number of 61 with your VOACAP-based propagation programs. Over the past week the solar flux index continued in the range 120-130. The prediction for the coming week is for ‘more of the same’, with the SFI around 135-145. […]

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Propagation News – 29 March 2015

| March 27, 2015

Last week’s solar eclipse was a great opportunity to try out some propagation experiments. Many listeners reported the enhanced reception of distant medium wave stations at the time of maximum eclipse as the D layer of the ionosphere became less absorbing. The other data are currently being analysed for a feature in RadCom. This week […]

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Propagation News – 22 March 2015

| March 20, 2015

Last week we warned you of more potential solar flares and coronal mass ejections hitting the Earth and it looks like we were right. On Tuesday 17th a major geomagnetic storm took place, pushing the Kp index to eight. The immediate reaction was an increase in signal levels on 10m with many Swedish, Finnish and […]

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Propagation News – 15 March 2015

| March 13, 2015

Last week we said that the sun’s surface was looking a little bare, but that was before sunspot region 2297 erupted. This new area has helped keep the solar flux index around 120-130, but has spawned a number of solar flares. This region has so far produced an X2.2 flare, along with four moderate M-class […]

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Propagation News – 8 March 2015

| March 6, 2015

Last week saw the solar flux index remain in the range 123-130. The beginning of the week saw rather unsettled geomagnetic conditions, with the planetary A index up to 23 at middle latitudes. Solar wind speeds remained elevated above 500km/s due to a geomagnetic storm that brought widespread aurora around the arctic circle. The solar […]

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