GB2RS Propagation News
Propagation News – 9 February 2020
After sunspot group 2757 rotated out of view the Sun remained spotless with a solar flux index around 70. We had periods of geomagnetic disruption thanks to the effects of coronal holes, the worst seeing the Kp index hit four on Thursday morning. These storms resulted in visible aurora being reported at higher latitudes. Monday […]
Propagation News – 2 February 2020
We had a new sunspot group last week, but don’t get too excited—region 2757 was from the old Cycle 24. We know this because it was close to the Sun’s equator and had the older magnetic configuration. As you read or hear this, the spot will be rotating out of view, off of the Sun’s […]
Propagation News – 26 January 2020
This week saw a decline in sporadic E conditions on 10m. This may be due to a repositioning of the jet stream or just the end of the winter sporadic E season, but more of that in the VHF section. On the face of it, last week saw the Sun behaving itself, with zero sunspots. […]
Propagation News – 19 January 2020
We had another pretty uneventful week with zero sunspots, but no major geomagnetic disturbances. The K-index rose to three on Thursday morning due to the effects of the solar wind, but the ionosphere was otherwise calm geomagnetically. We said last week that there had been some winter sporadic E, which had livened up 10 metres. […]
Propagation News – 12 January 2020
Having predicted in last week’s broadcast that there would be no geomagnetic disturbances, we did in fact have two periods with an elevated Kp index this week. The first occurred on 5 January, when the Kp index hit four. This was due to the impact of the solar wind. The Kp index rose again to […]
Propagation News – 5 January 2020
After the two new solar cycle 24 sunspots that appeared last week, we now have another spot developing in the Sun’s south-west quadrant. Don’t get too excited though, as the last two spots soon disappeared and this one might not amount to much either. It is, however, a positive sign that the next cycle is […]
