GB2RS Propagation News
Propagation News – 19 May 2024
After last weekend’s auroral spectacular it was nice to see the Sun calm down a little and the bands get back to normal. But that didn’t last long. To recap, on Friday 10 May the Kp index shot up to 9, due to the effects of a number of coronal mass ejections, while the HF […]
Propagation News – 12 May 2024
Disrupted solar conditions continued this week with X-class solar flares aplenty. Four X-class events on the 8 and 9 May prompted coronal mass ejections, which could join together to impact the Earth this weekend. We can expect a strong G3 event with the Kp index rising to 6 and the potential for visible aurora in […]
Propagation News – 5 May 2024
What a strange week we had; with the solar flux index in the 167 range, falling to 130, conditions should have been reasonable, but the Kp index hit 4 and even 5.33 on the evening of Friday 26 April, which meant propagation on Saturday the 27th was truly dire. Stations taking part in International Marconi […]
Propagation News – 28 April 2024
We had another week with plenty of sunspots, and HF conditions were quite good in the second half. Earlier, the Kp index reached 3 and 4, which didn’t help maximum useable frequencies, or MUFs for short. For example, on Sunday the 21st, the Kp index rose to 4 and the MUF over a 3,000km path […]
Propagation News – 21 April 2024
Last week saw a welcome return of sunspots but, unfortunately, it also brought unsettled geomagnetic conditions. By Thursday 18 April the solar flux index was back above 200, hitting 217. Compare that to the previous week’s 131 and you can see that there is a lot more activity. But, with 12 active regions visible, it […]
Propagation News – 14 April 2024
The Sun is still looking a little bare, but the solar flux index has climbed back to 131, as of Thursday 11 April, with four active regions. The promise is that things will improve, especially as we will soon see the return of active region 3615, which was the source of numerous M-class and one […]
