GB2RS Propagation News
Propagation News – 20 August 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 […]
Propagation News – 13 August 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 […]
Propagation News – 6 August 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 […]
Propagation News – 30 July 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 […]
Propagation News – 23 July 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 […]
Propagation News – 16 July 2017
Sunspot number 2665 caught NOAA by surprise last week. As we wrote in the last report it was only just rotating into view, but ultimately turned out to be very large indeed. It helped push the solar flux index up to 91 during the week, although it was the only sunspot group visible. We got […]
