GB2RS Propagation News
Propagation News – 13 September 2015
This week the HF bands were once again plagued by the effects of the high-speed solar wind as a result of ongoing coronal holes on the sun. The Kp-index hit six for more than 15 hours on Tuesday as incoming plasma caused a major geomagnetic storm. Listeners could be forgiven for thinking their receivers had […]
Propagation News – 6 September 2015
This week brought a much-needed break from the effects of the virtually continuous coronal holes on the sun. This saw the Kp-index come down to a more reasonable one or two most of the time, with a corresponding improvement in HF conditions. As we are now in September we should see a bigger improvement as […]
Propagation News – 30 August 2015
The predicted drop in the solar wind failed to materialise this week as it is still being driven by coronal holes on the sun. These are areas of weaker magnetic fields that let plasma escape from the sun’s surface. The Kp index has hit six at times, bringing very unsettled geomagnetic storm conditions and poor […]
Propagation News – 23 August 2015
HF propagation conditions were very bad earlier this week. The culprit was a high-speed solar wind stream from coronal holes on the sun. The solar wind often exceeded 500 kilometres per second and had a south-facing Bz field at times. This meant that it more easily coupled with the Earth’s magnetic field – and plasma […]
Propagation News – 16 August 2015
Long-range HF propagation showed signs of picking up this week. Whether this was due to the slow change to better autumnal propagation, or from having a short period of fairly settled geomagnetic conditions, is debatable. The settled conditions didn’t last long though as the Kp index was up to four on Thursday due to plasma […]
Propagation News – 9 August 2015
Further complaints about poor HF conditions were heard this week as the summer doldrums continued, not helped by a less than brilliant solar flux index of about 105. Having said that, the sun is showing more activity with a sprinkling of spots. Geomagnetic conditions were on the whole settled this week, at least until Thursday […]
