GB2RS Propagation News
Propagation News – 14 May 2017
Last week the solar surface was pretty much bare, other than a tiny speck of a sunspot at mid latitude. This sent the solar flux index down below 70 – the first time it has been there for some time. Given that it never drops much below about 66, even at sunspot minimum, this gives […]
Propagation News – 7 May 2017
Last week saw the solar flux index in the mid-70s with only one sunspot group visible, slap bang in the middle of the disk. Conditions were more settled geomagnetically with the K index actually resting at zero at times on Wednesday and Thursday. This was due to a lack of coronal hole activity, although one […]
Propagation News – 30 April 2017
Last week saw some unsettled conditions due to the effects of a coronal hole. Its associated high speed solar wind stream actually hit the Earth a day earlier than predicted, resulting in poor HF conditions during the International Marconi Day event on Saturday, 21 April. The planetary K-index hit six the night before and we […]
Propagation News – 23 April 2017
HF propagation last week was good in parts. There were days when even 20 metres seemed almost devoid of signals, but others when the band really shone. For example, for well-equipped stations 3D2AG on Rotuma Island near Fiji was workable on both CW and RTTY at times on 20 metres. This was remarkable considering the […]
Propagation News – 16 April 2017
Last week was a mixed bag again in terms of HF propagation. While the solar flux index was stuck in the mid 70s, geomagnetic disturbances due to coronal hole effects made their mark. The K index hit four on Tuesday and brought a pre-auroral enhancement. With the critical frequency over the UK almost reaching 7MHz, […]
Propagation News – 9 April 2017
A large sunspot group pushed the solar flux index to 112 this week, which was largely unpredicted. However, unsettled geomagnetic conditions reigned again with the K index hitting five on the fourth. The activity from sunspot region 2644 also brought a number of solar flares, and it will be interesting to see if they reoccur […]
