GB2RS Propagation News
Propagation News – 25 February 2024
We’ve had two X-class solar flares over the past few days. The first occurred at 2307UTC on 21 February, so didn’t affect the UK at all. The second erupted at 0632UTC on 22 February and was too early to affect the ionosphere in this region. However, HF paths to the east may have been affected. […]
Propagation News – 18 February 2024
We had an interesting week with the threat of a major coronal mass ejection at any time with so much sunspot activity. In the end, it pretty much amounted to nothing, with the highest Kp index only reaching 4.33 on 11 February. That’s not to say we didn’t have solar activity. Far from it, as […]
Propagation News – 11 February 2024
A large sunspot region has been turning into an Earth-facing position and now looks like it could be threatening. Active region 3576 has already emitted a couple of low-class solar flares but could be poised for even more. An M5.1 solar flare was detected around region 3575 on the 7 February as well. Updated imagery […]
Propagation News – 4 February 2024
We had another week of relatively calm geomagnetic conditions with a maximum Kp index of three. The solar flux index declined from 172 on the 24 January to 135 on the 30 January. Nevertheless, that is still enough to support propagation on the 10m band, with the Maximum Useable Frequency over a 3,000km path generally […]
Propagation News – 28 January 2024
We dodged a bullet last week when a coronal mass ejection, or CME, was predicted to be heading our way. In the end, it came to nothing. The CME observed on the 20 January was expected to pass Earth and deliver possible G2 storm conditions. But a solar wind enhancement, possibly associated with the plasma […]
Propagation News – 21 January 2024
We had yet another week with good solar conditions which, at this point in the cycle, is good news. The solar flux index remained in the 170s to 180s range and the Sun is currently peppered with spots. The Kp index never got above 3.33 and that was only for one three-hour period on January […]
