GB2RS Propagation News
Propagation News – 23 November 2025
After the solar mayhem we reported in last week’s GB2RS News, the Sun has been relatively quiet over the past week. The maximum Kp index we saw was 4, on Monday, 17 November, but otherwise it was often below 1 or 2. The result is that the ionosphere has been more stable and DX has […]
Propagation News – 16 November 2025
Last week saw one of the most dramatic auroral events of this cycle. Three X-class solar flares, which sparked coronal mass ejections, joined together to give us a peak Kp index of 8.67, with a solar wind speed in excess of 950 kilometres per second. The result was extensive visible aurora in the US and […]
Propagation News – 9 November 2025
Last week was a mixed bag in terms of HF propagation. Earlier in the week, the 10m band was working very well, with Australia romping into the UK by mid-morning. But later in the week, everything had changed. Solar activity was high with multiple X-class and strong M-class solar flares. At least three coronal mass […]
Propagation News – 2 November 2025
Last weekend saw HF shine as stations took part in the CQ World Wide SSB Contest. Geomagnetic conditions remained settled and DX was plentiful, with contacts possible as far afield as Alaska to the west and China to the east. Given the unsettled conditions we have had recently, it was a welcome break as radio […]
Propagation News – 26 October 2025
It looks like Earth dodged a bullet last week when a large coronal mass ejection, or CME, erupted on the far side of the Sun on Tuesday, 21 October. Had that CME been Earth-directed we could have endured a strong, or possibly an extreme, geomagnetic storm with dazzling displays of aurora. The source of the […]
Propagation News – 19 October 2025
Conditions over the past week have been reasonable with a relatively high solar flux and lower Kp indices. This resulted in a maximum usable frequency (MUF) over a 3,000km path, in excess of 35MHz. This is just what October was meant to be like! But all good things come to an end, and there are […]
