RSSGB2RS Propagation News

Propagation News – 27 August 2017

| August 25, 2017

Last week saw the solar flux index touch 90 as large sunspot group 2671 rotated into the centre of the solar surface. But, unfortunately, the predicted unsettled geomagnetic conditions, caused by a high-speed coronal hole solar wind stream, pushed the K index up to six early in the week. This hampered DX by pushing maximum […]

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Propagation News – 20 August 2017

| August 18, 2017

Last week saw the solar flux index in the low to mid-70s. Geomagnetic conditions were generally quiet earlier in the week, with some choice DX to be had. Andy, M0NKR reported working the Marshall Islands in the Pacific on 20m CW at 0700UTC on Wednesday, while Del, W8KJP in Florida, USA, was heard by G0KYA […]

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Propagation News – 13 August 2017

| August 11, 2017

Last week, the solar flux index continued in the mid-70s, with a single sunspot group making its way across the visible disk. Compare and contrast this with the same week last year, when there were actually five sunspot groups visible. This confirms, as it we didn’t know, that Solar Cycle 24 continues to decline. The […]

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Propagation News – 6 August 2017

| August 4, 2017

Last week was characterised by reasonably settled geomagnetic conditions and a solar flux index in the low 70s. The settled conditions meant that, despite the ionosphere still suffering from the summer doldrums, there was HF DX to be had. Andy, M0NKR reports working Z81D South Sudan and TX5EG Marquesas Island on Monday as well as […]

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Propagation News – 30 July 2017

| July 28, 2017

For most of last week there were no sunspots on the Earth-facing solar disc. A single small sunspot, number 2668, appeared on Tuesday, but had gone by Wednesday. Solar activity was very low and flux stayed at 69 and 70 all week. The K-index however was mainly at 3 and 4, and only briefly dropped […]

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Propagation News – 23 July 2017

| July 21, 2017

Last week, space weather was dominated by sunspot number 2665 that was twenty times larger than any recent sunspot—the largest since number 2529 in April 2016. It disappeared on Wednesday as the Sun’s rotation took it out of our view. Solar flux held at 92 before fading back to the low seventies. Conditions were unsettled […]

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