GB2RS Propagation News
Propagation News – 30 October 2016
Last week was characterised by low sunspot activity, but very unsettled geomagnetic conditions. The solar flux index was in the mid to high 70s, but the K index was five or six for days on end, and even peaked at seven. This was high enough for automatic visible aurora e-mail warnings to be sent out […]
Propagation News – 23 October 2016
Last week the solar flux index fell back to the high 70s. Geomagnetic conditions were unsettled over the weekend, but improved as the week went on. We are well and truly into the autumn HF season now, which is reflected in higher daytime maximum usable frequencies and lower night-time ones. However, we continue to be […]
Propagation News – 16 October 2016
The solar flux hovered around the 100 mark and, as predicted, HF propagation showed a big improvement earlier in the week thanks to more settled geomagnetic conditions. There were many reports of DX being worked from the UK including H40GC in Temotu, Solomon Islands, and T31T in Central Kiribati. The Kp-index was in the range […]
Propagation News – 9 October 2016
Last week the solar flux index didn’t behave as predicted and rose to 99 by Thursday. This was mainly due to the appearance of large sunspot groups 2598 and 2599. There were no major solar flares, only minor C-class events, but unsettled geomagnetic conditions continued thanks to ongoing coronal hole activity. The K-index hit four […]
Propagation News – 2 October 2016
Last week was dominated by extensive geomagnetic disturbances thanks to ongoing coronal hole activity on the sun. Coronal holes are areas with open magnetic field lines that allow plasma to escape as a high-speed stream. This plasma impacted the Earth causing aurora and unsettled HF conditions, especially on paths over the poles. The K-index was […]
Propagation News – 25 September 2016
This week saw the solar flux index increase from 80 to 86, but poor ionospheric conditions due to a high-speed solar wind stream dominated the earlier part of the week. The K-index hit five on the 20th but, as predicted, geomagnetic conditions improved slightly towards the end of the week. On the bright side, while […]
