GB2RS Propagation News
Propagation News – 05 December 2021
The last week was characterised by unsettled geomagnetic conditions, but a reasonable solar flux index of 92, falling to 86. Despite NOAA predicting that the Kp index would be around two, we had an excursion up to five on Tuesday. This was due to an enhanced solar wind stream containing a sector of southward Bz, […]
Propagation News – 28 November 2021
We had yet another week with low solar activity. The solar flux index started the week at 79 and by Thursday had only climbed to 83. Ideally, we want the SFI to be above 100 to guarantee good 10m openings. Geomagnetically, the Sun has been quiet with a maximum Kp index of three. On Thursday […]
Propagation News – 21 November 2021
We had a week of lower sunspot activity, almost back to the days of sunspot minimum. The solar flux index ranged from 78 on Sunday 14th to 79 on Thursday 18th with a high of 80 on the 16th. So, nothing to write home about there. Geomagnetic conditions were mainly unsettled, with a maximum Kp […]
Propagation News – 14 November 2021
This last week was a little more settled than the previous one. The solar flux index remained in the high 80s and geomagnetic conditions were mostly quiet, with a maximum Kp index of three. That isn’t to say that the Sun has been inactive – far from it. A long-duration M2.0 solar flare took place […]
Propagation News – 7 November 2021
What a roller coaster week we had. From great conditions on HF last weekend, to a severe geomagnetic storm this week, it has been hard to predict what’s coming next. The Kp index hit seven on Thursday, thanks to incoming plasma from a full halo coronal mass ejection produced by an M1.7 flare from active […]
Propagation News – 31 October 2021
Well, we had another topsy-turvy week, with the sunspot number going from a lowly 10 to a much more impressive 91. We started last week with a virtually spotless solar surface, but this week the Sun is peppered with spots, with five active regions in place on Thursday. The net result is the maximum usable […]
