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 By Courtesy of the Propagation team   

 G3YLA JIM 

 G0KYA STEVE  

 G4BAO  JOHN  

Its all about the weather

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Link : Windy.com

Live Weather Reports

Pictured :

Jim Bacon G3YLA

NARC club member

and Nick Henwood

RSGB President.

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Propogation News


   30th January 2026   

 

 HF

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3

We had a much quieter week Sun-wise, with fewer geomagnetic disturbances and a decreasing solar flux index. Last week started at 153, but decreased to 133 by Wednesday.

The Kp index started the week at 2.33 and apart from an excursion to 5.33 was below 4.33 all week. The Kp=5.33 was due to an enhanced solar wind stream flowing from a small coronal hole.

The lower Kp indices have meant that the ionosphere has had a chance to recover and we have been seeing Maximum Useable Frequencies over a 3,000km path reaching 35MHz at times.

Ten metres has been coming up quite nicely, with the RR90 beacon in Eastern Russia audible on 28.200MHz mid-morning. On Thursday 29th, the band was otherwise quite bare, other than EM0WWA Ukraine on 28.480MHz with some sort of digitised female voice and PP8ZAC in Brazil, who was loud on 28.025MHz CW.

A quick scan of the 28MHz low-power beacons revealed PY4YYF Brazil on 28.115MHz, YM7TEN Turkey on 28.225MHz, and that was it. Hopefully 28MHz will improve as we head towards Spring.

Next week NOAA predicts that the SFI will be in the range 120-140, with the Kp index set to remain low until the fourth, when it is predicted to rise to four.

So if this goes to plan we can expect reasonable conditions on HF, but you might be better off on 18, 21 or 24MHz as 10 metres may not be as active as we would like.

VHF and up

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The recent pattern of low pressure close to the southwest of the British Isles has staked its claim on another week with us and that means further spells of rain, especially in the south and west.

It also will maintain the cold southeasterly over the northeastern half of the UK, but any high pressure stays well to the north and east of us, so Tropo will probably be hard to find.

Rain scatter on the other hand may be more productive, especially for the south and west. Although some periods of rain, sleet or snow are possible in the northeast, where there may also be some snow static on the antennas from time to time.

Meteor scatter again has to rely upon random meteors for the next few weeks and, as most of you who follow these bulletins will remember, are at a peak in the early pre-dawn hours.

There has been a steady stream of auroral alerts recently, mostly minor events, but it reinforces the notion that it is worth monitoring the Kp index which gives a sense of the Earth’s geomagnetic activity and as a result high values of Kp are a useful indicator of a potential auroral event.

Sporadic-E usually takes a break at this time of the year, but if you make a point of checking the foEs trace on the www.propquest.co.uk you may see that there are the occasional spikes in the graph of the foEs data from Dourbes in Belgium. This suggests that although rare, out-of-season Es occur, especially on the lower bands like 10m and 6m

This week, Moon declination is positive and falling, going negative again on Thursday. Moon window length and peak elevation are falling. Path losses are rising again as we passed perigee on the 29th. 144 MHz sky noise will be low all week.

 

 G3YLA JIM 

 Please read
user notes on website.             

 G0KYA STEVE  

Communications and PR for hi-tech and aerospace companies

  STEVE 's  Beacon List 

G3USF's Worldwide List of HF Beacons

G3USF's Worldwide List Of 50MHz Beacons

Understanding Solar Indices

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