GB2RS Propagation News
Propagation News – 10 September 2017
Last week the Sun caught every one out. While NOAA predicted the solar flux index would be in the mid-70s, the sudden appearance of a large number of sunspots pushed it up to 183 on Tuesday, although it had calmed down to 122 by Wednesday. This had a major impact on the bands, with openings […]
Propagation News – 3 September 2017
Last week saw the solar flux index climb into the high 80s. Our prediction that the weekend’s ionosphere might be unsettled was partly correct, as the effects of a coronal hole pushed the K index to three on Sunday, but this quickly recovered. We are now seeing a shift from predominantly summer ionospheric conditions to […]
Propagation News – 27 August 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 […]
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 […]
