RSGB GB2RS News Bulletin for July 6th 2025

GB2RS News

Sunday, the 6th of July 2025

The news headlines:

• Don’t miss tomorrow’s RSGB Tonight@8 webinar on UK Bunkers on the Air
• Get involved with the GR2HQ challenge
• RSGB appoints a new CW Champion

The next episode in the Tonight@8 series is tomorrow, Monday, the 7th of July. During the webinar, Tony Hodge, M0TNI and Jason Dale, 2E0JIV, will discuss their journey into amateur radio, what they enjoy about it and how they got involved in UK Bunkers on the Air. UKBOTA  is a programme and awards scheme that encourages radio amateurs to activate Royal Observer Corps and other types of bunkers in the United Kingdom. The webinar will be livestreamed on the Society’s YouTube channel and special BATC channel, allowing you to watch and ask questions live. Find out more by going to rsgb.org/webinars

The IARU HF Championship contest begins in less than a week, and the RSGB Contest Committee is encouraging both individuals and clubs to get involved. During the contest, Headquarters Stations represent their countries, with the RSGB’s station GR2HQ being run by a network of about a dozen stations around the UK and islands. Get involved with the GR2HQ challenge and work the stations between 1200 UTC on Saturday, the 12th of July and 1200 UTC on Sunday, the 13th of July. Certificates of Achievement will be available for all stations, and those stations achieving high scores will receive Certificates of Merit. For the full rules, go to the GR2HQ Challenge page on the Contest Committee website via rsgbcc.org

RSGB Board Director Mark Jones, G0MGX, is delighted to announce that Laura Robertson, MM7BFL, has agreed to take on the volunteer role of the RSGB CW Champion. Laura will head up the RSGB’s Morse-related activities and become an advocate for the use of CW. In her role, Laura will also help the Society to take CW to new audiences, with an emphasis on learning and development to further the skills of its members. Laura is a member of CWops and volunteers in the CW Academy team as a co-advisor, primarily assisting EU-based amateurs who are enrolled on the courses. She is often active on the HF bands using CW in POTA and SOTA activities, as well as from her home station. You can contact Laura via cw.champion@rsgb.org.uk. The RSGB has received a lot of interest in supporting this role, and in due course, it will be in contact with those who have said they would like to join a Morse support team.

When was the last time you revalidated your licence? Ofcom notes that whilst it is a requirement to revalidate your licence every five years, it is recommended to do it annually. Put a reminder in your diary to revalidate your licence soon, as Ofcom has stated that it intends to implement phases two and three of the planned updates to the amateur radio licensing framework later this year. These phases include changes to new and Intermediate callsigns and rules for special event stations. You can find guidance on the process by going to the RSGB website and searching ‘licence revalidation’. As well as FAQs, you’ll also find a link to a step-by-step video by Ofcom, which shows you the process of revalidating your licence using the online licensing portal.

Bawdsey Radar Trust will be holding an event to commemorate the world’s first airborne radar experiments. The event on Friday, the 15th of August, will take place at Adastral Park, the home to BT's research and innovation labs at Martlesham Heath in Suffolk. Presentation topics will include Radar Early Days, Airborne Radar and Family Histories. There will be two sessions open to members of the public. The morning session is aimed at people with little technical knowledge, and the afternoon session is for those with some technical knowledge. To find out more and book your ticket, go to bawdseyradar.org.uk  and click on ‘Radar in the Air’. If you're unable to attend this event, why not learn about radar history with a visit to the Bawdsey Radar Museum? Don't forget, as an RSGB member, you can save 20% on the ticket price. Visit rsgb.org/partner-museums  to download your voucher.

This year, International Lighthouse and Lightship Weekend will run from 0001 UTC on the 16th of August to 2400 UTC on the 17th of August. The event usually attracts more than 500 lighthouse entries located in over 40 countries. Registration for the event is open at illw.net

Please send details of all your news and events to radcom@rsgb.org.uk. The deadline for submissions is 10 am on Thursdays before the Sunday broadcast each week.

And now for details of rallies and events

Saffron Walden Radio Ham and CB Club Rally is taking place today, the 6th, at Lovecotes Farm, Chickney Road, Henham Village, Bishop’s Stortford, CM22 6BH. Booking a table for today costs £10, and you can arrive from 8 am onwards. For more information, email g8swr1.5@gmail.com

Barford Norfolk Radio Rally is taking place today, the 6th, at Barford Village Hall and Green, Barford, Norwich, NR9 4AB. The doors open at 9 am for visitors. The event features trade stands, car boot sales, bring and buy, a charity raffle, repeater groups, catering and free car parking. Entry costs £3 per person, but under 16s will be admitted free of charge. Outside pitches cost £8 and are available from 8 am. For more details visit tinyurl.com/Barford2025  or email David, G7URP at radio@dcpmicro.com

The McMichael Radio & Electronics Rally and Car Boot Sale will take place on Sunday the 13th of July at Oak Trees Event Field, Cocks Lane, Warfield, Bracknell, RG42 6JE. Traders are welcome from 8 am. The doors will be open for visitors from 9 am to 3 pm. The entrance fee is £4 per person. A trader’s table costs £15 and this includes admission for two people.

Now the Special Event news

Special callsign GB70RS is in use to celebrate the 70th anniversary of the RSGB’s weekly news service GB2RS, which has been running continuously since the 25th of September 1955. A team of amateurs is using the callsign on a variety of bands and modes. QSL via the Bureau, Logbook of the World and eQSL. For more information, visit rsgb.org/gb70rs

Members of Central Uusimaa Radio Amateurs Association, OH2AP, are active throughout 2025 as OF60AP to celebrate their club's 60th anniversary. QSL via Club Log's OQRS. For details of a certificate that is available for working the station, see tinyurl.com/oh2ap25

Now the DX news

Don, KW7R, is active as V73KW from the Marshall Islands. He is there on a work assignment until September 2025. In his spare time, he operates CW and FT8 on various bands. QSL via Logbook of the World.

George, VU2DGR, is active as AT44I from Bharati Research Station. He is a member of the 44th Indian Scientific Expedition to Antarctica. The station was spotted recently on the 20m band using SSB. QSL via home call.

Now the contest news

Today, the 6th, the 3rd 144MHz Backpackers Contest runs from 1100 to 1500 UTC. Using all modes on the 2m band, the exchange is signal report, serial number and locator.

RSGB VHF National Field Day started at 1400 UTC on Saturday, the 5th and ends at 1400 UTC today, Sunday, the 6th of July. Using all modes on the 6m, 4m, 2m, 70cm and 23cm bands, the exchange is signal report, serial number and locator.

The RSGB VHF Fixed Station Contest started at 1400 UTC on Saturday, the 5th and ends at 1400 UTC today, Sunday, the 6th of July. Using all modes on the 6m, 4m, 2m, 70cm and 23cm bands, the exchange is signal report, serial number and locator.

Tomorrow, the 7th, the RSGB 80m CW Club Championship runs from 1900 to 2030 UTC. Using CW on the 80m band, the exchange is signal report and serial number.

On Tuesday, the 8th, the RSGB 432MHz FM Activity Contest runs from 1800 to 1855 UTC. Using FM on the 70cm band, the exchange is signal report, serial number and locator.

Also, on Tuesday, the 8th, the 432MHz UK Activity Contest runs from 1900 to 2130 UTC. Using all modes on the 70cm band, the exchange is signal report, serial number and locator.

On Wednesday, the 9th, the RSGB 432MHz FT8 Activity four-hour Contest runs from 1700 to 2100 UTC. Using FT8 on the 70cm band, the exchange is a report and four-character locator. Also, on Wednesday the 9th, the RSGB 432MHz FT8 Activity two-hour Contest runs from 1900 to 2100 UTC. Using FT8 on the 70cm band, the exchange is a report and four-character locator. Stations entering the four-hour contest may also enter the two-hour contest.

On Thursday, the 10th, the RSGB 50MHz UK Activity Contest runs from 1900 to 2130 UTC. Using all modes on the 6m band, the exchange is signal report, serial number and locator.

The GR2HQ Challenge starts at 1200 UTC on Saturday, the 12th and ends at 1200 UTC on Sunday, the 13th of July. Using CW and SSB on the 160 to 10m bands, where contests are permitted, the exchange is signal report and ITU Zone. The UK is in Zone 27.

The IARU HF Championship starts at 1200 UTC on Saturday, the 12th and ends at 1200 UTC on Sunday, the 13th of July. Using CW and SSB on the 160 to 10m bands, where contests are permitted, the exchange is signal report and ITU Zone. The UK is in Zone 27.

On Sunday, the 13th, the UK Microwave Group 24, 47, and 76GHz Contest runs from 0900 to 1700 UTC. Using all modes on 24 to 76GHz frequencies, the exchange is signal report, serial number and locator.

Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday the 3rd of July 2025

It looks like the Space Weather Prediction Centre, which supplies the forecasts for NOAA, were overly cautious last week.

Despite predicting geomagnetic disturbances, we had quite a calm week. The Kp index rose to 3.33 on a few occasions, but that was it. We ended up with settled geomagnetic conditions and a solar flux index in the 120s to 130s. A warning about the impact of a coronal mass ejection, or CME, which left the Sun on the 28th of June, appeared to come to nothing.

This made a much-needed change to the unsettled conditions of previous weeks.

As a result, maximum usable frequencies, or MUFs for short, over a 3,000km path have been above 21MHz at times. At night, MUFs over the same path have been consistently above 14MHz, which is normal for this time of year.

In the summer, we can expect to see nighttime MUFs being consistently higher than in the winter, due to a change in ionospheric chemistry. Unfortunately, this also means that daytime MUFs are lower than in winter, leaving 28MHz open to Sporadic-E instead.

According to DXMaps.com, it appears that most Sporadic-E openings on the 10m band have favoured the southeast of the UK towards Italy, Turkey and Greece.

Back to F2-layer propagation now. On the 20m band, E51JD, operating from the South Cook Islands, was spotted on SSB by Laurie, G3UML, on Thursday morning. KH7AL/KH9 on Wake Island, and T30TTT on Kiribati, have also been worked on the 20m band using FT8.

Next week, NOAA predicts that the solar flux index will be in the 125 to 145 range. Geomagnetic conditions are predicted to be quiet, apart from the period around the 11th and 12th of July, when the Kp index may rise to 4.

And now the VHF and up propagation news from G3YLA and G4BAO

This hot weather has provided some nice marine Tropo around the coasts recently as hot, dry air advects across the cooler, moist surface layer.

We have also been able to see the duct move inland in the evenings. The hybrid weather pattern of low pressure to the north of Britain and high pressure to the south will continue to produce some Tropo paths, particularly across the Channel, Biscay and North Sea. 

Northern areas of Britain will see occasional fronts and active weather systems, together with breezier weather, making Tropo unlikely here. The higher pressure to the south means that rain scatter may not feature much unless isolated thunderstorms develop when weak weather fronts eventually reach these southern areas.

In the north, it’s a different matter, and there could be some heavier rain that might produce some rain scatter on the GHz bands.

Meteor scatter did well during June with several important showers to boost chances. July offers two showers. The first is the low-hourly-rate Alpha Capricornids, and the second is the Delta Aquariids. Both of these peak around the 30th of July, so we have a while to wait.

There have been some minor auroral events recently, and it's always possible that solar activity could lift the Kp index high enough, but we are not expecting great things. Keep a check on the Kp index at spaceweather.com  to see if anything is happening.

The Sporadic-E season has had occasional good days, but for much of the time, the focus of activity has been too far into Europe for the whole country to take advantage of it. To begin the coming week, the position of the jet streams suggests paths to northern Europe and the Baltic will offer best results. Later in the week, the emphasis shifts to the Balkans and Italy, and then to Iberia.

The Moon reaches apogee tomorrow, the 7th, where path losses are at their highest. Moon declination is negative all week, with the lowest, or the most negative, on Wednesday, the 9th. 144MHz sky noise is moderate but increasing to a high of around 2,300 Kelvin on Wednesday.

And that’s all from the propagation team this week.