Search Results for 'solar'
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 […]
Contesting: Stephen Kopetsch, M0RTI / M0X
If you aren’t familiar with the contesting element of amateur radio, it can be described as a competition to see who can contact the most stations in a set period of time on certain bands and within specific rules. It is highly addictive and can draw in amateurs from around the world. Each week the […]
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 […]
