GB2RS Propagation News
Propagation News – 27 May 2018
A glancing blow from a high-speed solar wind stream caused the K-index to rise to three on Wednesday. This was a little unexpected as it came from a polar coronal hole on the Sun that didn’t look like it would impact the Earth. This brought mixed blessings as an initial positive phase saw the maximum […]
Propagation News – 20 May 2018
Last week continued with zero sunspots after the 13th and a solar flux index of around 70. NOAA had forecast poorer geomagnetic conditions from Thursday, the 17th. The solar wind speed, as measured at the ACE spacecraft, did increase on Thursday morning but the K-index hadn’t got above three by Thursday afternoon. Overall, HF conditions […]
Propagation News – 13 May 2018
Our forecast last week was pretty much spot-on, with poor geomagnetic conditions plaguing us from Sunday, the 6th. But before this, there was a pre-auroral HF enhancement on the Saturday that surprised many people. Steve, PJ4DX, on Bonaire in the Caribbean worked the UK on 17 metres and also made contact with Martin, M0BCT on […]
Propagation News – 6 May 2018
The sun remained spotless last week and the latest projections place sunspot minimum sometime around mid-2019. NOAA’s Space Weather Prediction Center says solar cycle 24 is declining more quickly than originally forecast, but expect the current solar conditions to last for at least another 12 to 18 months. On the bright side, quieter geomagnetic conditions […]
Propagation News – 29 April 2018
Last weekend’s poor HF conditions, which made for a quieter than normal International Marconi Day on the 21st, were largely caused by incoming material from a large solar coronal hole. A lack of sunspots didn’t help either. The incoming solar wind pushed the K-index up to six at one point, but conditions settled as the […]
Propagation News – 22 April 2018
The Sun remained spotless this week, other than the hint of a new sunspot coming around its limb as this report was being written. The solar flux index reflected this, sitting around the high 60s, although it did reach 71 on Thursday morning. Geomagnetic conditions were quiet at the beginning of the week, but a […]
