GB2RS Propagation News
Propagation News – 10 July 2016
We got the forecast for last weekend about right. Plasma from a coronal hole hit the Earth late on Saturday, pushing the K-index to four. The solar flux index, however, has remained doggedly in the 70s. DX has been possible on HF though. After a request for information last week Peter, M0RYB said he was […]
Propagation News – 3 July 2016
The Sun has had another virtually spotless week with the solar flux index keeping stubbornly below 80. As we said last week, this is getting close to the kind of figures we expect to see at sunspot minimum, such as when the SFI touched 64 in June 2007. Geomagnetically, things were a little more settled […]
Propagation News – 26 June 2016
Once again the sun looks pretty spotless, apart from one tiny smudge. As a result, this week saw the solar flux index drop below 80. We’re beginning to sound like a stuck record, but ongoing coronal hole activity pushed the K-index to five on Wednesday 22nd. Noisy electrical storms across most of northern Europe didn’t […]
Propagation News – 19 June 2016
This week saw some fantastic six metre propagation, with the band behaving more like 20m. Multi-hop sporadic E contacts were made across the Atlantic, as far west as Arizona and south to Texas. Six metres is a band that can exhibit both VHF and HF qualities, although we’ll leave any further sporadic E discussion to […]
Propagation News – 12 June 2016
This week saw mixed HF propagation conditions. We were right to predict a geomagnetic disturbance for last weekend, although the plasma hit the Earth right at the end of National Field Day. This led to widespread aurora as the K-index hit five and then six. Propagation during field day was lacklustre due to a lack […]
Propagation News – 5 June 2016
The solar flux index declined further this week to the mid-80s. A quick look at an image of the Sun from the Solar Dynamics Observatory on solarham.net shows why. On Thursday two sunspot groups were rotating out of sight on the Sun’s limb, leaving a pretty blank disk. As a result NOAA predicts the solar […]
