GB2RS Propagation News
Propagation News – 21 January 2018
Last week saw unsettled HF conditions in the first half, but more settled ones later on. A high-speed stream from a coronal hole pushed the K-index to four and five last weekend, and maximum usable frequencies were depressed until at least Thursday. The HF bands were often very lacklustre, with even 20m struggling to show […]
Propagation News – 14 January 2018
Last week, we continued to suffer the effects of coronal holes on the Sun, which are very prevalent at this point in the solar cycle. On Wednesday, HF was very lacklustre with little on the bands and 20m closing around 4pm. Having said that, there were pearls to be found. The 6O6O DXpedition to Somalia […]
Propagation News – 7 January 2018
Last week the solar flux index (SFI) hovered around the 70 mark, reflecting the lack of sunspots. Given that the SFI doesn’t really fall below about 65-66 at sunspot minimum, this shows the distinct lack of solar activity at this time. This meant that the lower bands were the ones to see the most activity, […]
Propagation News – 24 December 2017
This week we have a slightly different approach to the HF propagation news. We want to help you and your family contact Santa’s elves in Lapland. The station Oscar Juliet Nine X-ray is on the air this Christmas from Santa Claus Land. Up to 30 elves are operating OJ9X from Finland for the entire month […]
Propagation News – 17 December 2017
Last week, the solar flux index nudged into the low 70s, although the Sun remained spotless. The enhanced solar wind from a coronal hole pushed the K-index to four, and it remained around three for long periods during the week. So these were far from ideal conditions for F2 layer DX on the higher bands, […]
Propagation News – 10 December 2017
Last week, the effects of the high-speed solar wind from another coronal hole saw the K-index climb to five on Tuesday and remain relatively high throughout Wednesday and Thursday. The ionosphere took a hit and daytime maximum usable frequencies struggled to exceed 18MHz at times. By Thursday, conditions were starting to improve a little, but […]
