GB2RS Propagation News
Propagation News – 5 July 2026
Compiled by G0KYA, G3YLA and G4BAO on 2 July, 2026 Last week we warned you about some large sunspots about to turn into view. It turns out that regions 4478 and 4479 were even bigger than we thought. The result was that the solar flux index climbed into the low 200s, but we also had […]
Propagation News – 28 June 2026
Things have been quiet on the solar front but that may be about to change. The solar flux index has been sitting around the low 120s for a few days and the geomagnetic Kp index has been below 2. Other than a couple of M-class solar flares, activity has been rather quiet. One of the […]
Propagation News – 21 June 2026
We had a quiet week geomagnetically, but the solar flux has also declined. Over the past week, the Kp index never rose above 2 or 3, with only one three-hour excursion to 5 on Thursday 11 June. This bodes well for HF propagation, but the solar flux index has declined from its recent high of […]
Propagation News – 14 June 2026
Last week we warned you about a potential geomagnetic disturbance caused by a triple coronal mass ejection, or CME, from the Sun. As it turned out, the Kp index rose to 6.33 and poor HF conditions ensued, just in time for RSGB National Field Day. Luckily, Sunday 7 June wasn’t quite so bad, but it did […]
Propagation News – 7 June 2026
Compiled by G0KYA, G3YLA and G4BAO on 4 June. We are awaiting the arrival of solar material as a result of three coronal mass ejections, or CMEs, that erupted off the Sun. These were sparked by three solar flares. These, coupled with a high-speed solar wind stream from an Earth-facing coronal hole, threaten to initiate a […]
Propagation News – 31 May 2026
Compiled by G0KYA, G3YLA and G4BAO on Thursday, 28 May. What a difference a week can make… Last week we reported that the solar flux index was down in the 100s but that it looked like there were spots coming around the Sun. This week they’ve arrived, pushing the solar flux index up to 142 […]
