GB2RS Propagation News
Propagation News – 22 March 2015
Last week we warned you of more potential solar flares and coronal mass ejections hitting the Earth and it looks like we were right. On Tuesday 17th a major geomagnetic storm took place, pushing the Kp index to eight. The immediate reaction was an increase in signal levels on 10m with many Swedish, Finnish and […]
Propagation News – 15 March 2015
Last week we said that the sun’s surface was looking a little bare, but that was before sunspot region 2297 erupted. This new area has helped keep the solar flux index around 120-130, but has spawned a number of solar flares. This region has so far produced an X2.2 flare, along with four moderate M-class […]
Propagation News – 8 March 2015
Last week saw the solar flux index remain in the range 123-130. The beginning of the week saw rather unsettled geomagnetic conditions, with the planetary A index up to 23 at middle latitudes. Solar wind speeds remained elevated above 500km/s due to a geomagnetic storm that brought widespread aurora around the arctic circle. The solar […]
Propagation News – 1 March 2015
We are now into March with the spring equinox just a few weeks away. With equal illumination on both hemispheres, this is traditionally a good time for north-south contacts on HF, such as UK to South Africa and South America. A detailed analysis using VOACAP online shows a few more factors to consider when planning […]
Propagation News – 22 February 2015
While the solar flux index declined to the 120s this week, geomagnetic conditions became quite unsettled. The Kp index reached five around 18th February, spawning an aurora that was visible from northern parts of the UK. This didn’t help HF conditions, which had been sparkling recently due to a long period of quiet conditions. For […]
Propagation News – 15 February 2015
This week the solar flux index declined slightly to be in the 130s, pretty much as predicted by NOAA. The observed sunspot number for the week also declined, being 76 on Thursday 12 February. Geomagnetic conditions were largely settled, with the A index keeping below 15 all week. For next week, NOAA predicts more of […]
