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This week saw the Sun more active with up to five sunspot regions in place. Two of the regions are quite large, pushing the solar flux index up to 89 on Thursday with a sunspot number of 76.

That should be enough to get the ionosphere up and running and we are also seeing early Autumnal HF propagation starting to take off.

Gary G0FWX reports working Central America and the Caribbean on 10 metres, namely Venezuela, Puerto Rico and Surinam. Brazil has also been logged, but we are still awaiting widespread reports of North American stations to be logged on 28MHz.

Geomagnetic conditions have been variable with the Kp index hitting four on Wednesday, thanks to material from a coronal mass ejection. This sent the solar wind speed up to more than 400km per second and it was still above 300km/s on Thursday.

There has been solar flare activity recently and we can expect it to continue. This could mean sudden ionospheric disturbances and HF blackouts if the flare is strong enough and occurs during daylight hours. There could also be associated coronal mass ejections to contend with.

Next week NOAA predicts the solar flux index will remain in the mid 80s while the Kp index should eventually decline to two after reaching five this weekend. This is due to a coronal hole which is currently facing Earth. A high speed solar wind stream flowing from this zone should reach Earth later this week and contribute to a geomagnetic disturbance at higher latitudes.

VHF and up

As predicted last week, we had a mix of weak Tropo and rain scatter modes, with an isolated report of the Cornish 10GHz beacon GB3MCB being copied for an hour by G4DBN in East Yorkshire at 460km overland.

This coming week the Tropo conditions will take a hit as low pressure becomes the dominant pattern for the coming week. This will take the form of active fronts crossing the country together with areas of showers, so at least there will be some rain scatter potential for the GHz bands.

At the moment, indications are that the return of any ridges, and hence Tropo, between the lows will be temporary and limited in scope, so best to think of other options like meteor scatter or aircraft scatter and possibly aurora to provide the unconventional modes this week.

There is one small meteor shower due to peak this week. The daytime Sextantids with a ZHR of five is due to peak on the 27th, but the timing of this peak is often uncertain. The maximum may occur even a day earlier than expected, so be alert and continue to check the early morning for the best random meteor scatter conditions.

EME path losses are at their highest this week with apogee today, (Sunday)
but with peak Moon declination coming up on Wednesday there is plenty of Moon visibility for Moonbounce enthusiasts. The Moon is at its zenith in the early morning.

 

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NARC Training 2020

Amateur Radio Training with NARC

Training is very important to NARC because we realise this is how new people come into the hobby and attain their Foundation, Intermediate and Advance Amateur Radio licenses.
We are pleased to offer courses which are based on demand and our programme of other events and activities. To register your interest for a course and exam please email your name and contact details, together with which level of training course you are waiting for,  to the Club Exam Secretary David Palmer G7URP: This email address is being protected from spambots. You need JavaScript enabled to view it.

Club meetings

 CLUB MEETINGS - NARC Live!

During the current Covid-19 pandemic when the club cannot physically meet, the club now broadcasts its own magazine show NARC Live! every Wednesday with news, features and guests.
It is streamed online live from 19.30 BST at the following places:

• Facebook Live:
www.facebook.com/norfolkamateurradioclub/

• BATC Streaming service:
www.batc.org.uk/live/NARC

The club meets virtually every Wednesday throughout the year in the sixth form centre of the City of Norwich School, Eaton Road, Norwich, NR4 6PP from 1900-2130.

We welcome anyone of any age, gender or ability and who enjoys experimenting with radio and electronics to come and meet us and see what we do in our hobby.

Please see above ONLINE tab for details of the club programme and below this piece for contacts of club official.

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