RSSGB2RS Propagation News

Propagation News – 7 December 2014

| December 5, 2014

As predicted, HF conditions were very good for the CQ Worldwide contest last weekend, although NOAA were wrong with their predicted solar flux index. Instead of 135 it was actually 177. There were no major flares or coronal mass ejections to upset the ionosphere with the result that all of the HF bands were very […]

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Propagation News – 30 November 2014

| November 28, 2014

The sun remained peppered with smaller sunspots this week, driving the solar flux index to a peak of 169. This kept the ham bands humming, with the maximum useable frequency easily above 28MHz on many paths during the daytime. Night-time highs reached 10MHz at times on longer paths, but 7MHz and 3.5MHz have both been […]

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Propagation News – 23 November 2014

| November 21, 2014

As we predicted last week, sunspot region 2209 has been active, emitting a number of M- and C-class solar flares, although it is nowhere near as violent as it was on its last rotation. The solar flux index remained relatively high during the week, peaking at 170. The latest NOAA/USAF forecast predicts the solar flux […]

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Propagation News – 16 November 2014

| November 14, 2014

The sun has remained active this week, with the solar flux index remaining in the range 132 to 142. There have been continued M-class solar flares from sunspot group 2205. Becoming more Earth-facing this week are regions 2207 and 2208. Region 2208 has increased in area and complexity and shows a risk of solar flares, […]

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Propagation News – 9 November 2014

| November 7, 2014

The sun remains peppered with sunspots, although they are all relatively small. A larger group, number 2205, appeared around the limb last Wednesday and will be Earth-facing this week. This could be the source of more solar flares and coronal mass ejections. Solar wind stream enhancements contributed to elevated geomagnetic activity at high latitudes last […]

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Propagation News – 2 November 2014

| October 31, 2014

Giant sunspot region 2192 has now disappeared around the back of the sun and luckily it didn’t produce any major coronal mass ejections to upset HF conditions while it was visible. The region was, however, the source of numerous solar flares over the past two weeks, which caused a number of sudden ionospheric disturbances or […]

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