GB2RS Propagation News
Propagation News – 18 September 2016
The solar flux index followed the NOAA prediction this week, declining to 85 by Thursday. Geomagnetic conditions were regrettably not as settled as we would have liked, with the K-index hitting three at times thanks to a continued high speed solar wind stream from a coronal hole. Luckily, no Earth-directed coronal mass ejections were observed […]
Propagation News – 11 September 2016
Last weekend saw very unsettled geomagnetic conditions due a large coronal hole across the sun’s equator. This impacted SSB Field Day, with the K-index being pushed as high as four and five, sparking visible auroras at high latitudes and depressed maximum usable frequencies. The solar flux index hung tantalisingly close to 100 during the week, […]
Propagation News – 4 September 2016
This week brought a glimpse of better things to come. Andy, M0NKR reports he worked VP6J Pitcairn Island on 12 metres and the maximum useable frequency was often above 21MHz earlier in the week. The downside was, as predicted, periods of unsettled geomagnetic conditions, with the K-index hitting four at times and even six on […]
Propagation News – 28 August 2016
This week was a mixed bag in terms of the sun and HF propagation. The solar flux index hovered around the 80 mark, but there was a geomagnetic disturbance on Tuesday evening that sent the K-index up to five for more than six hours. This prompted warnings that aurora might be visible from lower than […]
Propagation News – 21 August 2016
This week has been a little unsettled in terms of geomagnetic disturbances and we are still experiencing the summer HF doldrums, at least until September. The K index hit three on many occasions due to ongoing coronal hole activity, and these negated the slight rise in the solar flux index caused by a handful of […]
Propagation News – 14 August 2016
Last week the solar flux index climbed as NOAA had predicted, hitting 95 by Thursday evening. This was largely due to a new large crop of sunspots on the sun’s surface. These will rotate across the sun over the next few days and, as long as they don’t fade away, they should help the solar […]
