RSSGB2RS Propagation News

Propagation News – 15 February 2015

| February 13, 2015

This week the solar flux index declined slightly to be in the 130s, pretty much as predicted by NOAA. The observed sunspot number for the week also declined, being 76 on Thursday 12 February. Geomagnetic conditions were largely settled, with the A index keeping below 15 all week. For next week, NOAA predicts more of […]

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Propagation News – 8 February 2015

| February 6, 2015

As reported last week, the 2015 K1N DXpedition to Navassa Island in the Caribbean is now under way. If you would like to revisit the HF propagation predictions for the DXpedition, refer to last week’s GB2RS propagation entry. K1N has been audible on most bands and possibly loudest on 12m in the afternoon. And now […]

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Propagation News – 1 February 2015

| January 30, 2015

The 2015 K1N DXpedition to Navassa Island in the Caribbean is due to start shortly. Navassa is just west of Haiti and is a 4,600 mile sea path from the UK, beaming 270 degrees. Let’s look at the propagation. On 160m, that’s 1.8MHz, and 80m, 3.5MHz, you will need a mutual dark path between you […]

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Propagation News – 25 January 2015

| January 23, 2015

Solar conditions were largely settled this week with the A index remaining firmly in single figures. NOAA’s prediction that the solar flux index would be around 130 last week appears to have been fairly spot on, with the SFI at 124 as this report was being prepared. The prediction this week is for more of […]

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Propagation News – 18 January 2015

| January 16, 2015

This week the solar flux index has been down a little compared with the pre-Christmas period. As the report was being prepared it stood at 142, with NOAA predicting it will decrease to 130 by the end of the week. There are currently no new visible sunspots rotating into view on the sun’s surface, which […]

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Propagation News – 11 January 2015

| January 9, 2015

As is usual this time of year we start with a retrospective look at 2014, and it looks like we passed the peak of Sunspot Cycle 24 in the spring. The peak solar flux index (SFI) for the cycle occurred on 23 October 2014 with 227, although there were plenty of other times when it […]

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