GB2RS Propagation News
Propagation News – 18 October 2015
We’ve had another week of unsettled HF conditions. Geomagnetic storming was observed on Monday at high latitudes as a high-speed solar wind stream, flowing from a geo-effective coronal hole, caused problems. By Wednesday the Kp index peaked at five and the bands were left noisy with only fairly local European stations audible on 40-20m. The […]
Propagation News – 11 October 2015
The sun severely disrupted the HF bands again this week. A high-speed solar wind stream with a south-facing Bz magnetic component continued to interact strongly with the Earth’s geomagnetic field. Strong, G3 level geomagnetic storming was observed at high latitudes and the K index hit seven on Wednesday evening. There were long periods on Wednesday […]
Propagation News – 4 October 2015
Better autumnal HF conditions continued this week with more settled geomagnetic conditions and a healthy solar flux index that reached 131 on Thursday. However, the solar proton flux increased slightly that day, which may have caused some problems. During such an event, the Earth can be showered with highly-energetic solar particles. When these protons arrive […]
Propagation News – 27 September 2015
Starting on a happier note, it has been good to see the HF bands becoming more active this week as we head into autumn. With a solar flux index of around 105, fifteen metres has been showing promise with the YV5B beacon in Venezula and 4U1UN beacon in New York romping in on 21.150MHz during […]
Propagation News – 20 September 2015
Despite ongoing solar coronal holes, and their contribution to the high-speed solar wind, HF conditions have fared a little better than in previous weeks. This is due to the traditionally better autumnal HF conditions, which should improve further as the month goes on. Despite the geomagnetic K-index never really dropping below three, and often hitting […]
Propagation News – 13 September 2015
This week the HF bands were once again plagued by the effects of the high-speed solar wind as a result of ongoing coronal holes on the sun. The Kp-index hit six for more than 15 hours on Tuesday as incoming plasma caused a major geomagnetic storm. Listeners could be forgiven for thinking their receivers had […]
