GB2RS News

Sunday, the 25th of May 2025

The news headlines:

As part of the RSGB’s ongoing strategy to take amateur radio to new and diverse audiences, it is seeking to appoint a volunteer CW Champion. Whilst the need for a CW test has been removed from the licensing requirements, there is still a strong interest in the mode. Recent communications and activity involving Morse have received high levels of interest, and the Society would like to do all it can to encourage and promote CW within the hobby. This new role will take the lead with activities including managing RSGB web content relating to Morse code and contributing to the GB2CW broadcasts. The volunteer will also be tasked with building a team of enthusiastic individuals who can support CW-related activities undertaken by the Society. This role is intended to help take Morse to new audiences with an emphasis on learning and development to further the skills of RSGB members. Read the full role description, as well as details of how to apply, by going to rsgb.org/volunteers

The next webinar in the Tonight@8 series is on Monday, the 2nd of June. The RSGB’s Morse Test Coordinator, Eric Arkinstall, M0KZB, will lead the webinar and will be joined by a panel of Morse experts, including RSGB Morse Assessor and GB2CW broadcaster Michael Topple, GM5AUG. The presentation will include an introduction to Morse, how to start learning the code, the different types of Morse keys and the Achilles heels that can occur when learning Morse. There will also be a panel discussion on how they each became interested in the mode and how they overcame any problems they have encountered along the way. Find out more about this and future webinars on the RSGB website at rsgb.org/webinars

Would you like to become the RSGB STEM Champion? This new volunteer role is part of the Society’s strategic plans to encourage more young people into STEM careers and to demonstrate the contribution that amateur radio can make to those careers. The focus of the role will also be to develop and strengthen the Society’s relationship with the STEM Learning organisation. The Champion will need to work closely with licensed STEM Ambassadors, attend STEM events to promote amateur radio, and support radio amateurs who would like to become STEM Ambassadors. The STEM Champion will work closely with the Board Liaison, Ben Lloyd, GW4BML and members of the RSGB Outreach team. To make the most of the role, you will need to have the right skills and experience. This includes being a STEM Ambassador with involvement in the STEM sector, and also being proactive, enthusiastic, organised and willing to find new ways to achieve the role’s objectives. For full details of this challenging but rewarding role and how to apply, see the RSGB website at rsgb.org/volunteers

Staff and volunteers from the RSGB had a successful time at the Dayton Hamvention last weekend. The event was a brilliant opportunity to engage with radio amateurs from around the world and resulted in 134 people joining the RSGB or renewing their membership. These included ARRL First Vice President, Kristen McIntyre, K6WX and ARRL CEO, David Minster, NA2AA, as well as Phil Karn, KA9Q and many more who took advantage of the new RSGB Digital Membership. Members of the RSGB team are always delighted to hear how much the Society’s publications, videos and other content are appreciated by radio amateurs in other countries.

Please send details of all your news and events to [email protected]. The deadline for submissions is 10 am on Thursdays before the Sunday broadcast each week.

And now for details of rallies and events

The Durham and District Amateur Radio Society Rally is taking place today, the 25th, at Bowburn Community Centre, Bowburn, County Durham. The doors are open from 10.10 am to 2.30 pm, with disabled visitors gaining access at 10 am. Entry costs £3. There is a bring-and-buy sale, trade stands, special interest groups, an RSGB bookstall and catering available on site. For more information, phone Michael, G7TWX, on 07826 924 192 or visit the sdars.org.uk  website.

Spalding and District Amateur Radio Society’s annual radio rally is set to take place on Sunday, the 1st of June. The venue will be Spalding Rugby and Football Club, Centenary Park, Drain Bank North, Spalding, Lincolnshire. There will be free car parking available, traders, on-site catering and a bar. For more information, visit sdars.org.uk

Mendips Radio Rally will take place on Sunday, the 8th of June at Farrington Gurney Memorial Hall, Church Lane, Farrington Gurney. The doors will be open from 9.30 a,m and free parking and refreshments will be available on site. For more details, contact Luke on 07870 168 197.

Now the Special Event news

Special event station YO160ITU is active throughout the month of May to celebrate the 160th anniversary of the ITU. See QRZ.com for details of diplomas that are available for working the station.

The North West Group, MN0NWG, is running special event station GB0AEL until the 31st of May to commemorate the anniversary of Amelia Earhart's transatlantic flight. In May 1932, Earhart became the first woman to fly nonstop and alone across the Atlantic. She left Harbor Grace in Newfoundland and landed 15 hours later in Northern Ireland. QSL via MI0HOZ directly or via the Bureau.

Now the DX news

Frank, PH2M is active as PJ4M from Bonaire, SA-006, until the 29th of May. He is operating mainly FT8 and some SSB on the 80 to 10m bands. There may also be some 6m band work, if conditions allow. QSL via Logbook of the World, Club Log's OQRS, or Frank's home call.

Remo, HB9SHD is active as V51/HB9SHD, while touring Namibia, until the 15th of June. He is operating using SSB and digital modes on the 40 to 6m bands. QSL via Logbook of the World.

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

Now the contest news

The CQ World Wide WPX CW Contest started at 0000 UTC on Saturday, the 24th of May and ends at 2359 UTC today, Sunday, the 25th of May. Using CW on the 160 to 10m bands, where contests are permitted, the exchange is signal report and serial number.

Today, the 25th, the UK Microwave Group High Band Contest runs from 0600 to 1800 UTC. Using all modes on the 3 and 6cm bands, the exchange is signal report, serial number and locator.

On Tuesday the 27th, the SHF UK Activity Contest runs from 1830 to 2130 UTC. Using all modes on the 3 and 13cm bands, the exchange is signal report, serial number and locator.

On Thursday, the 29th of May, the RSGB 80m Club Championship runs from 1900 to 2030 UTC. Using CW on the 80m band, the exchange is signal report and serial number. 

Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday the 22nd of May 2025

A high-speed solar wind, originating from a massive coronal hole, took its toll on HF this past week.

During the weekend of the 17th and 18th, the Kp index was above four for nine of the three-hourly recording periods. Unfortunately, the feed from the Dourbes Digisonde failed over this period, so we can’t comment on what effect this had on maximum usable frequencies, or MUFs for short.

Later in the week, geomagnetic conditions improved, despite the coronal hole still being Earth-centric, and the Kp index fell to more reasonable levels, sometimes in the ones and twos.

An M3.2 solar flare was observed at 08:21 UTC on the 19th of May. The source was located off the northeast limb, so perhaps we can expect more as it turns to become more Earth-facing.

Unfortunately, the solar flux index also fell to lower levels, reaching 119 by Thursday, the 22nd. In fact, on that day, it had been below 120 for more than seven days. But all is not lost, as a solar flux of more than 100 is usually enough to keep the HF bands open.

MUFs over a 3,000km path have generally reached 21 MHz and have often peaked at 24 MHz at times. It is quite normal for the F2-layer MUF not to reach 28MHz due to a change in the ionospheric chemical make-up in the summer – the so-called summer doldrums. However, Sporadic-E may keep 10m alive, so don’t write the band off.

Propagation, at the moment, favours paths into the southern hemisphere, although each band can have different characteristics at different times. A quick play with the propagation tool at tinyurl.com/propcharts  will show you what we mean.

Next week, NOAA predicts that the solar flux index will remain around 120 until the 27th of May, after which it could rise to 140 by the end of the month. Unsettled geomagnetic conditions are forecast for the period from the 28th of May to the 2nd of June. This could see the Kp index peak at five or six with corresponding drops in the MUF and DX.

As we are now on the downward portion of this solar cycle, we may expect more geomagnetic disturbances from coronal holes and coronal mass ejections.

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

The long run of fine settled weather seems to have drawn to a close.

We have a period of changeable and, at times, wet and windy weather to deal with over the coming week. I doubt we will see much, if any, Tropo except perhaps towards the end of the week as some models show a new high building as we move into June. 

Before then, the various fronts and showers will bring several spells of rain and a much greater chance of rain scatter on the GHz bands than recently.

The solar conditions have again provided weak auroral events, with fluttery signals on the HF bands being a good indicator, since the bright evenings and early dawns leave little chance of any visual clues. As usual, the measure to follow is the Kp index. So, look out for values of Kp going above five to generate interest.

Meteor scatter is declining as the last of the Eta Aquariids play out, following a long tail from the peak on the 6th of May. Meteors also make up the content of Sporadic-E because, as they burn up, they produce long-lived metallic ions that can be focused into thin layers of Sporadic-E.

There are some less well-known meteor showers in June. So, next week there may be more to say. In the meantime, random meteors and declining Aquariids will have to suffice.

Now, on to Sporadic-E. This is beginning to be the primary mode in these summer weeks. It is sensible to check during main operating windows in the morning, late afternoon and early evening.

Ideally, we require meteor input, a low Kp index, plus some weather triggers to set up atmospheric gravity waves which produce the right wind shear in the E region. Jet streams are usually the best clues for where Sporadic-E might form. 

Use the daily Sporadic-E blog on the Propquest website to get an insight of the current day’s weather patterns – see propquest.co.uk  

If you have very limited time and have still not worked Sporadic-E, just checking 50MHz in the late afternoon will ensure that you make a start this year.

EME path losses are still falling as the Moon reaches perigee, its closest point to Earth, on the 26th of May. Moon windows and peak elevation are again rising, reaching a maximum on the 29th of May. 144MHz sky noise is low and remains low as the week progresses.

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

GB2RS News

Sunday, the 18th of May 2025

The news headlines:

RSGB General Manager, Steve Thomas, M1ACB, is delighted to announce the appointment of Pete Joyce, M0OFM, as the new volunteer RSGB Convention Chair. Pete is a regular attendee at RSGB Conventions and has a keen interest in balancing the different needs of attendees through a varied programme. He also understands the importance of making the Convention accessible to everyone, both in person and online. Pete brings to the role a range of experience in planning and managing events for other organisations. The RSGB Convention planning team look forward to supporting Pete as he takes on this challenging and important role.

The RSGB is excited to announce that more RadCom editions have been added to its web app. RSGB members are now able to browse back to January 2000, which is over 300 magazines! Go to rsgb.org/radcom to explore all the RadCom content from this millennium. You’ll need your RSGB membership portal details to access the editions. If your RSGB membership is due for renewal soon, why not swap to a digital membership? You’ll still get all the great benefits of being a member, and you’ll save money as well as RadCom storage space. If you’re not yet an RSGB member, there’s never been a better time to join the Society. Take out a digital membership and choose to read RadCom via our app, and you’ll have easy access to 25 years of RadCom editions. The RSGB will be releasing mobile versions of the app soon, so you’ll be able to download copies of its publications and read them on the go.  

Volunteering at the RSGB National Radio Centre is a wide-ranging and highly rewarding role. Thanks to the variety of visitors and the number of events and activities that the Centre is involved with, no two days at the NRC are the same. If you’d like to join the friendly and dedicated team, the NRC is currently looking for new volunteers. Full training is given, including the operation of the GB3RS radio station. NRC volunteers also enjoy numerous benefits associated with volunteering at Bletchley Park. If all of this sounds like something you’d like to be a part of, and you can volunteer for one or two days per month, please email NRC Coordinator Martyn Baker, G0GMB, via [email protected]. You can find out more about the RSGB National Radio Centre by going to rsgb.org/nrc

The RSGB Outreach Team is offering qualified amateur radio operators under the age of 18 the opportunity to take part in a new DMR project. The project’s aim is to help young people get on the air and build their confidence in making QSOs. The Team has nine DMR handheld transceivers and hotspots available to borrow for three months, completely free. As part of the offering, the Outreach Team will be hosting regular youth nets that you would be welcome to join. You can apply for the DMR kit as an individual or as a school group, as long as one member of the group is licensed. Another part of the project is to support teachers who would like to take their amateur radio licence and set up a school club. In collaboration with the Radio Communications Foundation, the RSGB is offering to pay the licence exam fee for nine teachers to help get them and their school club started. If you’re a teacher who is interested in discovering more about amateur radio and sharing that excitement with your students, get in touch. Once you have your licence, you can apply for the free DMR kit on loan for three months to help set up your club. If you are interested in applying for a DMR kit, fill out the application form by going to tinyurl.com/DMRyouth. If you are a teacher interested in starting your own radio club, please email RSGB Youth Chair Chris Aitken, MM0WIC, via [email protected]

As we come to the end of Mental Health Awareness Week 2025, let's remember to show the very best of amateur radio and make sure we are there for one another. Let's listen to each other, share our appreciation for our fellow radio amateurs and celebrate kindness within our community. You can read how amateur radio helped Lee Aldridge, G4EJB, in the July 2023 edition of RadCom. You can access mental health support by going to mentalhealth.org.uk

Please send details of all your news and events to [email protected] The deadline for submissions is 10am on Thursdays before the Sunday broadcast each week.

And now for details of rallies and events

The East Midlands Ham and Electronics Rally is taking place on Saturday, the 24th of May at Beckingham Village Hall, Southfield Lane, Beckingham, DN10 4FX. Traders can set up from 7 am, with doors open to the public between 9.30 am and 3 pm. There will be hot food and refreshments available. Free parking is located behind the hall. For more information and to book, please go to emerg.uk/rally

The Durham & District Amateur Radio Society Radio Rally is taking place on Sunday, the 25th of May at Bowburn Community Centre, Bowburn, County Durham, DH6 5AT. Doors will be open from 10.10 am to 2.30 pm, with disabled visitors gaining access at 10 am. Entry is £3. There will be a bring-and-buy sale, trade stands, special interest groups and an RSGB bookstall. Catering will be available on-site. For further information, please call Michael Wright, G7TWX, on 07826 924192 or email [email protected]

Now the Special Event news

Special event station GB0SAR is active until the 30th of May in support of SOS Radio Week. The station will mostly be using FT4 on the 20m band, but you might also catch it on the other HF bands using phone. For more information, visit QRZ.com

Humber Fortress DX Amateur Radio Club is once again raising awareness for men’s mental health through amateur radio. Club members will be operating special callsign GB0MMH. Other special call signs will also be active. The station is active today, Sunday the 18th of May, as well as the weekend of the 21st and 22nd of June. Please listen out for the operators and give them a call. Your support will help raise awareness of men’s mental health. If you would like further information, please contact [email protected]

The International Amateur Radio Club will be active as 4U0ITU until the end of 2025. The club is celebrating the 160th anniversary of the International Telecommunication Union. QSL is available via Logbook of the World, Club Log, or direct to P.O. Box 6, 1211 Geneva 20, Switzerland.

Now the DX news

Antonio, DL4EA, will be active as FY/DL4EA from French Guiana between the 19th and 21st of May. Antonio plans to be active on QO-100 and RS-44 and maybe some HF QRP.

Emir, E77DX will again be active as D4DX in Cape Verde on the 24th and 25th May for the CQ World Wide WPX CW Contest. He’ll be operating as Single Operator All Bands in the high-power category. QSL is available via E73Y and Logbook of the World. 

Morten, LA9GY will be active from Eswatini between the 22nd of May and the 2nd of June. He plans to be operating holiday-style as 3DA0GY mainly on CW but also some SSB. QSL is available via his home call LA9GY.

Now the contest news

Tomorrow, Monday, the 19th of May, the FT4 Series Contest runs from 1900 to 2030 UTC. Using FT4 on the 80 to 10m bands, where contests are permitted, the exchange is your report.

On Tuesday, the 20th of May, the 1.3GHz UK Activity Contest runs from 1900 to 2130 UTC. Using all modes on 1.3GHz frequencies, the exchange is signal report, serial number and locator.

On Wednesday, the 21st of May, the 80m Club Championship data leg runs from 1900 to 2030 UTC. Using data modes on the 80m band, the exchange is signal report and serial number.

The CQ World Wide WPX CW Contest starts at 0000 UTC on Saturday, the 24th of May and ends at 2359 UTC on Sunday, the 25th of May. Using CW on the 160 to 10m bands, where contests are permitted, the exchange is signal report and serial number.

On Sunday, the 25th of May, the UK Microwave Group High Band Contest runs from 0600 to 1800 UTC. Using all modes on 5.7 and 10GHz frequencies, the exchange is signal report, serial number and locator.

Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday the 15th of May 2025

This week, you could be forgiven for thinking that the Solar Cycle 25 maximum is now over. With a reduced solar flux index and an almost blank Sun, there was little to get excited about.

By Thursday, the 15th of May, the SFI was 122, but previously, on the 12th, it had been down to 116, which is the lowest it has been for some time. There is still a lot of solar activity going on, but most of it is not conducive to good HF propagation.

Over the past week, we have had two X-class solar flares and five M-class events. The X-class events were associated with coronal mass ejections, but these appear to have been directed away from Earth. A fast solar wind has resulted in the Kp index standing at four for a lot of the time, namely on the 9th and 10th of May and again on the 14th and 15th.

Unfortunately, this is not uncommon at this point in the solar cycle and adds some evidence that we are now in the declining phase of Cycle 25.

Next week, NOAA predicts that things may improve with the SFI set to rise from the 19th of May. It forecasts the SFI will start the week around 115, but then will climb steadily, reaching 145 by the 1st of June. After a brief rise on the 19th with a Kp of four, things then become more settled with a Kp of two between the 22nd and the 28th of May.

A large elongated coronal hole became Earth-facing on 16th May, which could cause raised K indices and lower MUFs from today, the 18th of May, onwards.

It looks like the best HF F2-layer conditions may occur between the 22nd and 28th of May.

And don’t forget, despite the HF doldrums, we are now well into Sporadic-E season with short-skip occurring, predominantly on 10m. But more of that shortly.

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

The prolonged spell of high pressure is likely to remain until near the end of this week, so there is plenty of time to get some more Tropo in the log.

Cloudier and cooler air over eastern Britain at the end of last week may enhance the Tropo by adding moisture under the inversion. For most places, the strongest Tropo conditions will be overnight and early morning, then they will degrade as the daytime heating destroys the surface temperature inversion.

Meteor scatter is declining a little, apart from a few stragglers from early May showers, so it's probably better to keep to the early morning period as your go-to time for meteor scatter to focus on any random input.

Rain scatter is unlikely until next weekend, but it might be worth thinking about the GHz bands from this Friday, the 23rd of May, onwards.

Aurora is a different matter, and the solar activity is likely to keep things interesting as a large sunspot group rotates into an Earth-facing position.

Strong Es opened on Wednesday, the 14th of May, so it's definitely the season to be checking the upper HF and lower VHF bands for Sporadic-E. In this recent opening, the Dourbes ionosonde peaked at an Es critical frequency of 14 MHz, which is a very high value, even for mid-season.

There were strong signals from the central Mediterranean on 6m CW, and some may have even got some 2m digital mode action from the brief opening. Check the Propquest NVIS tab for the day to see the details of this event.

Although weak jet streams were present, the opening may well have been helped by some very intense, slow-moving thunderstorms over France. Remember to start checking on 10m and, if it’s open, look to the higher bands of 6m, 4m, up to 2m.

EME path losses are still falling. Moon declination ended last week at minimum but goes positive again this Thursday, the 22nd of May. Moon windows and peak elevation are again rising. 144MHz sky noise is high this weekend, falling back to low as the week progresses.

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

GB2RS News

Sunday, the 11th of May 2025

The news headlines:

The RSGB EMC leaflets on mains wiring and earthing requirements have been updated by the EMC Committee to reflect the latest version of “Part P” of the Building Regulations for England and Wales. Part P deals with electrical safety in domestic homes. There are two leaflets, a basic version and an advanced version, and both are available to download from the RSGB website. Go to rsgb.org/emc and select ‘EMC Leaflets’ from the menu located on the right-hand side. Choose the “EMC Leaflet 7: Earthing and the radio amateur” links. You will also find many other resources on the same web page that will help you deal with a wide range of EMC problems.

Time is running out to apply and be part of the RSGB team going to France for this year’s Youngsters On The Air Summer Camp. The camp takes place between the 18th and 25th of August near Paris and is a chance of a lifetime for young RSGB members to represent their country and their national society. If you are aged between 16 and 25 and are passionate about amateur radio, then the RSGB would love to hear from you. The deadline to apply is Friday, the 16th of May. Don’t delay, apply now by going to rsgb.org/yota-camp

The RSGB is celebrating International Women in Engineering Day on the 23rd of June. The day celebrates the amazing work of women engineers across the globe. We know that amateur radio is a great foundation for careers in Science, Technology, Engineering and Maths. This year, the Society would love to share stories of how amateur radio has helped female engineers in their careers, as well as being an enjoyable part of their lives. If you are a woman working in any engineering sector, or know someone who is, the RSGB would like your help to inspire future generations of girls and young women. It doesn’t matter whether you are established in your career, just starting out or even still studying. Stories, along with a photo, should be sent to [email protected]  by the 26th of May. This event contributes to the RSGB’s Growth strategic priority by helping to reach new audiences.

Members of the RSGB HQ Team and RSGB volunteers will be attending the Dayton Hamvention between the 16th and 18th of May. Held at the Greene County Fairground in Xenia, Ohio, USA, the event is one of the world’s largest amateur radio gatherings and attracts radio amateurs from around the world. If you are attending, make sure you pop along to stand numbers 2305 and 2405 to say hello and ask the RSGB about digital membership. Find out more about the Dayton Hamvention by going to hamvention.org

Don’t forget that the next RSGB Tonight@8 webinar is tomorrow, Monday, the 12th of May. Dr Nathaniel Frissell, W2NAF and RSGB Propagation Studies Committee membe,r Gwyn Griffiths, G3ZIL, will present “Ham Radio Science Citizen Investigation: Space Weather We Can Do Together”. The talk will cover some of the key findings of recent HamSCI research, what’s next for the organisation, as well as how you can take part. 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

Please send details of all your news and events to [email protected]  The deadline for submissions is 10 am on Thursdays before the Sunday broadcast each week.

And now for details of rallies and events

The Barry Amateur Radio Society Rally is on Saturday, the 17th of May at Sully Sports and Social Club, South Road, Sully CF64 5SP. There is a large free car park on site. Admission is £3. Doors open to traders at 8 am and to the public from 9.30 am. Traders and exhibitors can call Nigel, GW1CUQ via 02920 892580 for further information. For general enquirie,s please ring Steve, GW5VOG, on 07900 560080 or email [email protected]

The Dunstable Downs Radio Club will be holding its Annual National Amateur Radio Car Boot Sale at the usual venue, Stockwood Park in Luton, on Sunday, the 18th of May.  Excluding a break for Covid-19, this is the 40th consecutive year that the event has been run. For further information, go to ddrcbootsale.org

The West of Scotland Braehead Radio Rally is on Sunday, the 18th of May at Braehead Arena, 150 Kings Inch Road, G51 4BN. The venue is just off the M8 and has free parking all day. It also has great bus links with Glasgow, Paisley and Inverclyde. Entry is £4. Doors are open between 10 am and 4 pm. There will be hot food and drinks available, and a licensed bar. There will be over 50 tables of traders and club stands as well as a Bring-and-Buy and an RSGB Book stand. For further information, go to braeheadradiorally.com 

The Lough Erne Amateur Radio Club's 41st Annual Radio Rally is taking place on Sunday, the 18th of May at Share Discovery Village, 221 Lisnaskea Road, Lisnaskea, Enniskillen, BT92 0JZ. There will be the usual facilities, food and drink, and a Bring-and-Buy. Doors open at 9 am to traders and 11 am to the general public. Entry is £5 and includes a draw ticket. To arrange a table, please contact Alan via [email protected]

Now the Special Event news

Special event station GB0SAR is active until the 30th of May to support SOS Radio Week. The station will mostly be working using FT4 on the 20m band, but you might also catch it on the other HF bands using phone. For more information, visit Qrz.com

Humber Fortress DX Amateur Radio Club will be operating special callsign GB0MMH to raise awareness of men’s mental health. Other special call signs will also be active. The station will be active throughout the weekend of the 17th and 18th of May, and also of the 21st and 22nd of June. Please listen out for the operators and give them a call. Your support will help raise awareness of the important issue of men’s mental health. If you would like further information, please contact [email protected]

Now the DX news

Roberto, IW7DEC will be active as PJ2/IW7DEC from Curacao, IOTA reference SA-099, until Wednesday, the 14th of May. He’ll be active on 40m to 20m, FT8 and SSB. QSL available via his home call and Logbook of the World.

Yuris, YL2GM continues to be active as ZS8W from Prince Edward and Marion Island, IOTA reference AF-021, until Friday, the 16th of May. Yuris will be on Marion Island as a radio engineer and member of the SANAP station communication equipment maintenance team, and he hopes to find good periods of time to be operational. 

A team of five Italian operators is active in the Republic of Kosovo until Saturday, the 17th of May. The operators will be active as Z68TT on CW, SSB and RTTY, and as Z68ZZ on FT8. QSL is available via OQRS and Logbook of the World.

Now the contest news

Today, Sunday, the 11th of May, the UK Microwave Group Millimetre-wave Contest runs from 0900 to 1700 UTC. Using all modes on 24, 47 and 76 GHz frequencies, the exchange is signal report, serial number and locator.

Also on Sunday, the 11th of May, the 70MHz CW Contest runs from 0900 to 1200 UTC. Using CW on the 4m band, the exchange is signal report, serial number and locator. UK stations also send their postcode.

Tomorrow, Monday the 12th of May, the 80m Club Championship runs from 1900 to 2030 UTC. Using SSB on the 80m band, the exchange is signal report and serial number.

On Tuesday, the 13th of May, the 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 13th of May, 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 14th of May, the 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 14th of May, the 432MHz FT8 Activity Two-Hour Contest runs from 1900 to 2100 UTC. Using FT8 on the 70cm band, the exchange is a report and a four-character locator. Stations entering the four-hour contest may also enter the two-hour contest.

On Thursday, the 15th of May, the 70MHz UK Activity Contest runs from 1900 to 2130 UTC. Using all modes on the 4m band, the exchange is signal report, serial number and locator.

Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday the 8th of May 2025

Active region 4079 turned out to be not quite so bad as we had predicted. The sunspot was large, about ten times the width of our Earth, so we expected it to be more active. It was regions 4081 and 4082 that produced most of the flare activity last week.

Two filament eruptions also occurred within two hours of each other. The first event began at 16:20 UTC on the 6th of May in the southern hemisphere and was responsible for a plasma wave across the surface of the Sun.

The second filament eruption began in the northern hemisphere around 17:50 UTC to the northeast of AR 4079. A large amount of plasma was flung to the north. The filament eruptions on Tuesday, the 6th of May, did produce coronal mass ejections, but an Earth-directed component was not apparent. So we dodged a bullet!

The solar wind speed remained high for most of last week which didn’t help propagation. It did help to push the Kp index to five across the weekend of the 3rd and 4th of May. Things were more settled later in the week. On Thursday, the 8th of May, the solar wind speed was down to around 500 kilometres per second, the Kp index was three, but MUFs over a 3,000km path were still down at about 20 MHz.

An Earth-facing coronal hole may add to the solar wind this weekend, the 10th and 11th of May. It looks like summer HF propagation is kicking in, with lower MUFs during the day but higher ones at night.

Next week, NOAA predicts that the SFI will be in the range 155 to 165. Settled geomagnetic conditions are forecast for the beginning of this coming week, but unsettled geomagnetic conditions are expected for the 16th to the 19th of May. At that point, we could see the Kp index rise to five again, coupled with poorer propagation and reduced MUFs.

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

Tropo has been a key propagation mode during the previous couple of weeks, but there have been variations in the location and timings of these conditions.

Sometimes this will be due to increased moisture below the temperature inversion, so although the cloudier areas have been cool, they have probably done better for Tropo.

This is due to the improved quality of the inversion, which performs better when there is a big moisture contrast across it, as you find with these layers of cloud. 

Otherwise, we find that the better conditions are driven by night-time cooling, forming a low inversion near the ground which tends to disperse during the morning as the Sun warms it away. This should still be beneficial for the 70cm UK Activity Contest on Tuesday, the 13th of May, over eastern areas, but perhaps less so farther west.

Good conditions will last into next week, but not everywhere. The main change will see an area of showery rain, possibly thundery, moving north into western Britain this weekend and perhaps some central areas early next week. This raises the prospect of some GHz band rain scatter in the west.

The Eta Aquariids meteor shower peaked last week. In the decaying tail of activity, together with other lesser showers, this should keep an enhanced meteor input for the coming week.

The Sporadic-E season typically runs from May to mid-September and the daily jet stream blogs have started on www.propquest.co.uk. 

As usual, the main season offers two periods of activity, one in the morning and the second from late afternoon to the evening. Remember, Es is not guaranteed since it depends upon many factors, but jet streams help, and these are shown on the website maps. Use the map clusters to find out where any activity is starting on 10m and then follow it up in frequency through the lower VHF bands.

EME path losses are at their maximum but falling after apogee on Friday, the 9th of May. Moon declination is negative, reaching a minimum this coming Thursday, so we’ll have very short Moon windows and low peak elevation. 144MHz sky noise is moderate, increasing to high by next Friday.

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

GB2RS News

Sunday the 4th of May 2025

The news headlines:

On Monday the 12th of May, Dr Nathaniel Frissell, W2NAF and RSGB Propagation Studies Committee member Gwyn Griffiths, G3ZIL will be delivering a Tonight@8 webinar on “Ham Radio Science Citizen Investigation: Space Weather We Can Do Together”. Since the 2017 Solar Eclipse QSO Party, HamSCI has been bringing together amateur radio operators and professional space scientists. They have been developing new and innovative ways to study space weather and its impacts on the ionosphere and radio propagation. In the presentation, Nathaniel will show results from the 2023 and 2024 HamSCI Festivals of Eclipse Ionospheric Science. Gwyn will explain why he enjoys the HamSCI experience, from exchanges with scientists to learning from students while pursuing his studies on HF propagation. They’ll also talk about what’s next for the organisation and how you can participate. Find out more by going to rsgb.org/webinars

In the latest RSGB 2024 Convention video to be released by the Society, Graham Murchie, G4FSG presents “Radar - the eyes of the few”. In the talk Graham gives a brief history of early radar, events leading up to the development of a viable system and the establishment of the world’s first operational radar station at Bawdsey. Watch the video by going to youtube.com/@theRSGB  If you’re interested in learning more about Bawdsey Radar Museum then check out the new benefit for RSGB members, which offers a 20% discount off the usual entrance price. Go to rsgb.org/partner-museums  to find out more!

RSGB club insurance, and beacon and repeater insurance have now been renewed for the year to April 2026. Club insurance certificates can be downloaded via rsgb.org/repeaterinsurance. You will need to log in to obtain your certificate. Beacon and repeater insurance certificates are available for an admin fee of £15 from the RSGB shop.  Please allow a couple of days after renewal for your certificate to be dispatched.

The RSGB Contest Club has recently exceeded one million QSOs. These have been made by RSGB members activating historic RSGB callsigns and special event callsigns, either in contests or in radio marathon activations. The QSOS have all been uploaded to Logbook of the World. The most prolific callsign has been G6XX with over 154,000 QSOs, and the most recent has been GB0IARU which was active in April to celebrate 100 years of the International Amateur Radio Union. Find out more about the RSGB Contest club, including how to join, by going to the RSGB website and selecting Contest Club from the ‘on the air’ menu.

Celebrations for the 70th Anniversary of GB2RS are well underway. To find out how you can get involved with special event stations and awards go to rsgb.org/gb70rs . The RSGB has recently updated the web page to add a selection of newsreader stories, which you can access by clicking ‘GB2RS Newsreader Stories’ from the menu on the right-hand side. If you’ve ever wanted to learn more about the voice behind your weekly GB2RS broadcast, this is your chance. More stories will be added throughout the year.

On Saturday the 10th of May, RSGB volunteers will be attending a regional Girlguiding event at Ardingly in West Sussex. Amongst other activities, Girlguiding members will have the opportunity to operate special event callsign GB25MAY via the QO-100 satellite. The volunteers would welcome contacts via QO-100 between 10.30 am and 3.30 pm on the day. Put the date in your diary and make time to encourage these youngsters as they try amateur radio!

The German amateur radio society, DARC, is once again hosting the traditional HamCamp for youngsters during the HAM RADIO fair in Friedrichshafen  between the 26th and 29th of June. It is open to participants under 27 years old and includes three nights at HamCamp, three breakfast vouchers and a three-day ticket for the HAM RADIO fair. The package price is €80 and the deadline for registration is the 8th of June. You can find further information via tinyurl.com/hamcamp25

Please send details of all your news and events to [email protected]  The deadline for submissions is 10am on Thursdays before the Sunday broadcast each week.

And now for details of rallies and events

The Dartmoor Radio Rally is taking place tomorrow, Monday the 5th of May, at the Yelverton War Memorial Hall, Meavy Lane, Yelverton, Devon, PL20 6AL. Free parking is available. There will be the usual Bring and Buy as well as trader stands and refreshments. Doors open at 10am and admission is £3. For further details, please call Roger on 07854 088882 or email him via [email protected]

The popular Mills on the Air event is taking place on the weekend of the 10th and 11th of May. There are currently 35 stations taking part, with registrations still being accepted. Find out more by going to tinyurl.com/millsontheair or by visiting the Mills on the Air Facebook page.

Now the Special Event news

The Ramsbury Amateur Radio DX Group will be active on the 3rd, 4th and 8th of May using special callsign GB1VE to celebrate VE day. The group will be operating on 20m and 40m using CW, SSB and digital modes.

The Vintage and Military Amateur Radio Society will be commemorating VE Day on Thursday the 8th of May. Members will be controlling a number of nets on varying frequencies between 7 am and 2 pm. They will be using vintage military equipment dating from the WWII period and beyond. The full programme of events can be found via vmars.org/news

Worthing Radio Events Group are planning to operate GB8OFP for the anniversary of VE Day on the 8th of May. Operation will take place on the seafront at the Ferring Pillbox, Patterson's Walk, West Sussex. Members will be active between 10 am and 2 pm on the 40m and 20m bands using SSB.

The East Midlands Electronics and Radio Group will be on the air between the 8th and 11th of May to celebrate the 80th anniversary of VE Day. Using the callsign GB1BK, the group will operate from the former RAF Binbrook in Lincolnshire. Members expect to be operational on at least 40m, 20m and 2m, using SSB and possibly some FT8 and SSTV.

Guernsey Amateur Radio Society will be operating special event radio station GU80LIB between the 9th and the 11th of May in celebration of the 80th anniversary of the liberation of Guernsey at the end of World War Two. See QRZ.com for more information.

Special event station GB0SAR will be operating between the 3rd and the 30th of May to support SOS Radio Week. The station will mostly be working using FT4 on the 20m band but you might also catch it on the other HF bands using phone. For more information, visit QRZ.com

 Now the DX news

A team of radio amateurs is active as TX9A from Tubuai in the Austral Islands, IOTA reference OC-152, until Wednesday the 7th of May. The group will operate on the HF bands. QSL is available via DK8ZZ. For all direct requests, use Clublog OQRS. Further information is available via austral2025.com

Yuris, YL2GM is active as ZS8W from Prince Edward and Marion Island, IOTA reference AF-021, until Friday the 16th of May. Yuris will be on Marion island as a radio engineer and member of the SANAP station communication equipment maintenance team, and he hopes to find good periods of time to be operational. 

Now the contest news

The ARI International DX Contest started on Saturday the 3rd of May and ends at 1159UTC today, Sunday the 4th of May. Using CW, RTTY and SSB on the 80 to 10m bands, where contests are permitted, the exchange is signal report and serial number. Italian stations also send their province.

The 432MHz to 245GHz Contest also started on Saturday the 3rd of May and ends at 1400UTC today, Sunday the 4th of May. Using all modes on 432MHz to 245GHz frequencies, the exchange is signal report, serial number and locator.

The 10GHz Trophy runs today, Sunday the 4th of May, from 0800 to 1400 UTC. Using all modes on 10GHz frequencies, the exchange is signal report, serial number and locator.

The May 144MHz Contest also runs today, Sunday the 4th of May, from 0800 to 1400 UTC. Using all modes on the 2m band, the exchange is signal report, serial number and locator.

Also today, the 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. UK stations also send their postcode.

Today, Sunday the 4th of May, the UK Microwave Group Low Band Contest runs from 0800 to 1400 UTC. Using all modes on 1.3 to 3.4GHz frequencies, the exchange is signal report, serial number and locator.

The Worked All Britain 7MHz Phone Contest runs today, Sunday the 4th of May, from 1000 to 1400 UTC. Using SSB on the 40m band, the exchange is signal report, serial number and Worked All Britain Square.

On Tuesday, the 6th of May, the 144MHz FM Activity Contest runs from 1800 to 1855UTC. Using FM on the 2m band, the exchange is signal report, serial number and locator.

Also on Tuesday, the 6th of May, the 144MHz UK Activity Contest runs from 1900 to 2130UTC. Using all modes on the 2m band, the exchange is signal report, serial number and locator.

On Wednesday, the 7th of May, the 144MHz FT8 Activity four-hour Contest runs from 1700 to 2100 UTC. Using FT8 on the 2m band, the exchange is a report and a four-character locator. Also on Wednesday, the 7th of May, the 144MHz FT8 Activity two-hour Contest runs from 1900 to 2100UTC. Using FT8 on the 2m band, the exchange is report and four-character locator. Stations entering the four-hour contest may also enter the two-hour contest.

On Thursday, the 8th of May, the 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.

Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday the 1st of May 2025

After the previous week’s geomagnetic disturbances, as described in last week’s GB2RS, the last seven days have been relatively quiet.

The Kp index has mostly been in the ones and twos, however the rise to a Kp value of four on Thursday the 1st of May could herald a return to unsettled conditions.

The solar flux index peaked at 170 on the 24th of April, before declining to 148 at the end of the month. HF conditions have been acceptable rather than outstanding and many stations struggled to work DX at times during International Marconi Day on the 26th of April.

Nevertheless, there is DX about including ZS8W Marion Island, TX9A Austral Islands and HD8G Galapagos Islands.

A look at the Proppy propagation prediction tool will help you work out the best times for making a contact with each station and on each band. You can find it by going to rsgb.org/propagation-tools

Looking ahead, a large sunspot has rotated into view. Now designated 4079, this region has returned and was previously sunspot region 4055. It has already emitted an M-class solar flare, and we may expect greater activity as it becomes more Earth-centric over the next week.

NOAA predicts that the solar flux index will climb again in the coming week, perhaps rising to between 160 and 165. Geomagnetic disturbances are also due to rise, with the Kp index forecast to reach five on the 5th and 6th of May.

If this becomes a reality, expect lowered MUFs and poorer HF paths, especially over the poles as the Kp index rises.

And finally, this week traditionally marks the start of the Sporadic-E season so keep an eye on 10m and 12m for short- and medium-range openings to Europe.

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

The current spell of high-pressure Tropo weather weakened a little as last week ended and we’ll see the return of unsettled conditions with showery rain, perhaps even the odd thunderstorm.

This is unlikely to lead to a total removal of high pressure and Tropo will still be worth looking for, especially over the western side of the UK. Some models place a new high just west of Britain during the coming week.

This means that the rain prospects are not great, although probably just enough for a hint of rain scatter in any isolated heavier showers.

The HF bands sounded a bit ‘watery’ at times last week, which is a classic sign of potential aurora to explore on the higher bands. Look out for aurora in the coming week if the Kp index climbs above five.

Meteor scatter is worth thinking about and, after last week’s Lyrids, we now have the Eta Aquariids shower peaking in the early hours of the 6th of May.

Remember that Sporadic-E ionisation is largely composed of long-lived meteor ions, so be on watch for Es openings. From now onwards through to mid-September, Sporadic-E will dominate the lower VHF bands, so check the clusters for signs of activity. Remember that Es starts on 10m and moves HF as an opening develops, even reaching 2m in the peak summer.

Unlike Tropo, Es events are often fleeting, so the best you can do is monitor conditions as the Es intensifies and be ready when it reaches the band you want. Don’t forget to check the daily Es blogs on www.propquest.co.uk which discuss the potential links between location of jet streams and Es formation.

EME path losses are increasing, but apogee is still a week away. Moon declination passed maximum last Thursday so Moon windows are shortening along with reducing peak elevation. 144MHz sky noise is low all week.

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

GB2RS News

Sunday, the 27th of April 2025

The news headlines:

The RSGB is participating in the International Amateur Radio Union Region 1 Interim Meeting in Paris this weekend. The event is of particular historical significance as it coincides with the centenary of the founding of the IARU in 1925, as well as the 75th anniversary of the establishment of IARU Region 1 in 1950. The French host society, REF, is also marking its 100th anniversary. This year’s meeting in Paris reflects a broader scope than in previous years and, for the first time, includes ‘Youth Matters’ on the agenda. It also covers the usual focus areas of HF, VHF, UHF and Microwave, as well as Electromagnetic Compatibility. The RSGB has been a key contributor to the meeting, submitting papers that include future options for the 23cm band and the harmonisation and protection of HF bands. Three delegates from the RSGB are attending the meeting in person, including the newly appointed RSGB President Bob Beebe, GU4YOX. There will be eight other RSGB representatives attending remotely. The meeting serves as both a celebration of amateur radio’s rich heritage and a forward-looking forum to address the challenges and opportunities facing the global amateur radio community. You can view meeting documents at conf.iaru-r1.org  In celebration of the centenary of the IARU the RSGB has created a web page to share information about its part in the celebrations. This includes a link to an RSGB archive video from the IARU meeting in Paris in 1950, as well as the RSGB’s July 1925 T & R Bulletin that contains an announcement detailing the formation of the IARU. Go to rsgb.org/iaru-centenary for further details.

Today, Sunday the 27th of April, is World Morse Day. The day honours the birthday of the inventor of Morse code, Samuel Morse, who was born on this day in 1791. To celebrate the occasion, the RSGB has released a video with a question in Morse code for you to answer. Once you have used your Morse skills to decipher the question, get involved by leaving your answer in the comments section under the post. You can view the video on the RSGB YouTube channel via youtube.com/theRSGB or search for @theRSGB on Facebook or X.

The deadline to apply to be the Team Leader for this year's Youngsters On The Air Summer Camp is Friday, the 2nd of May. This year's camp takes place between the 18th and 25th of August near Paris and is a chance of a lifetime for young RSGB members to represent their country and their national society. If you are an RSGB member, aged between 21 and 30, and are able to motivate a team of young people, then the RSGB would love to hear from you. Download an application form and apply for this exciting opportunity by going to rsgb.org/yota-camp.  Applications to be a Team Member will remain open until the 16th of May.

The RSGB Exams Quality Manager would like to remind everyone that clubs can still run exams if they are a Registered Exam Centre. Exams will be conducted online unless a candidate has a special requirement for a paper exam. The introduction of remote invigilation to allow people to take an amateur radio licence exam in their home does not affect this. If clubs have any queries about delivering exams, they should contact the   RSGB Examinations Quality Manager, Dave Wilson, M0OBW, via [email protected]. If anyone has special requirements for an exam, they should contact the RSGB exams team via [email protected]

As part of the IARU centenary celebrations, the RSGB has been activating callsign GB0IARU throughout April. On Wednesday, the 30th of April, the RSGB President Bob Beebe, GU4YOX, will be activating GB0IARU from 2 pm on 40m SSB, and then from 5 pm on 80m SSB. Frequencies will be spotted on the day, and times may vary to suit propagation.

Please send details of all your news and events to [email protected]. The deadline for submissions is 10 am on Thursdays before the Sunday broadcast each week.

And now for details of rallies and events

The Dartmoor Radio Rally is taking place on Monday, the 5th of May at the Yelverton War Memorial Hall, Meavy Lane, Yelverton, Devon, PL20 6AL. Free parking is available. There will be the usual Bring and Buy as well as trader stands and refreshments. Doors open at 10 am and admission is £3. For further details, please call Roger on 07854 088882 or email him via [email protected]

RetrotechUK is taking place on Sunday, the 11th of May at Sports Connexion, Leamington Road, Ryton-on-Dunsmore, Coventry, CV8 3FL. The annual event is organised by the British Vintage Wireless Society and will include nearly 200 stalls of dealers, clubs and private sellers. Doors open at 10.30 am and entry is £10. Early doors entry is available from 9 am for £25. Full details are available from Greg Hewitt via [email protected] or by going to retrotechuk.com

Now the Special Event news

The Spanish national society, URE, is on the air to mark the 100th anniversary of the IARU. Members are active on 160m to 6m until the 30th of April with ten different special event stations, including AO100IARU. Special awards will be available, as well as medals for the top participants from each continent who achieve the highest number of contacts with the stations on different bands and modes. Go to ure.es  for further details.

The Amateur Radio Society of Moldova is operating special event station ER100IARU until Wednesday, the 30th of April, in honour of the IARU centenary. Full details can be found via qrz.com

The Kuwait Amateur Radio Society is pleased to announce its participation in the IARU centennial celebrations. Members of the Society will be operating special event station 9K100IARU until Wednesday, the 30th of April.

Now the DX news

Dom, 3D2USU is active again as 3D2AJT from Nadi in the Fiji Islands until the end of April. The call sign is in memory of JH1AJT, now a Silent Key. QSL via Club Log's OQRS and Logbook of The World.

Yuris, YL2GM plans to operate as ZS8W from Prince Edward and Marion Island, IOTA reference AF-021, until Friday, the 16th of May. Yuris will be on Marion Island as a radio engineer and member of the SANAP station communication equipment maintenance team, and he hopes to find good periods of time to be operational. For further details, go to lral.lv/zs8w

Now the contest news

The UK and Ireland DX CW Contest started at 1200 UTC on Saturday, the 26th of April and ends at 1200 UTC today, Sunda,y the 27th of April. Using CW on the 80 to 10m bands, where contests are permitted, the exchange is signal report and serial number. UK and Ireland stations also send their district code.

The SP DX RTTY Contest started at 1200 UTC on Saturday, the 26th of April, and ends at 1200 UTC today, Sunday, the 27th of April. Using RTTY on the 80 to 10m bands, where contests are permitted, the exchange is signal report and serial number. SP stations also send their province code.

On Monday, the 28th of April, the British Amateur Radio Teledata Group Sprint 75 Contest runs from 1700 to 2100 UTC. Using 75 baud RTTY on the 80 to 10m bands, where contests are permitted, the exchange is your serial number.

Also on Monday, the 28th of April, the FT4 Series Contest runs from 1900 to 2030 UTC. Using FT4 on the 80 to 10m bands, where contests are permitted, the exchange is your report.

On Wednesday, the 30th of April, the UK and Ireland Contest Club 80m Contest runs from 2000 to 2100 UTC. Using CW on the 80m band, the exchange is your six-character locator.

On Thursday, the 1st of May, the 144MHz FT8 Activity four-hour Contest runs from 1700 to 2100 UTC. Using FT8 on the 2m band, the exchange is a report and the four-character locator. Also on Thursday, the 1st of May, the 144MHz FT8 Activity two-hour Contest runs from 1900 to 2100 UTC. Using FT8 on the 2m band, the exchange is a report and the four-character locator. Stations entering the four-hour contest may also enter the two-hour contest.

On Saturday, the 3rd of May, the 432MHz to 245GHz Contest starts at 1400 UTC and ends at 1400 UTC on Sunday, the 4th of May. Using all modes on 432MHz to 245GHz frequencies, the exchange is signal report, serial number and locator.

The UK Six Metre Group’s Summer Marathon starts at 0000 UTC on Saturday, the 3rd of May and ends at 2359 UTC on Sunday, the 3rd of August. Using all modes on the 6m band, the exchange is your four-character locator.

The ARI International DX Contest starts at 1200 UTC on Saturday, the 3rd of May and ends at 1159 UTC on Sunday, the 4th of May. Using CW, RTTY and SSB on the 80 to 10m bands, where contests are permitted, the exchange is signal report and serial number. Italian stations also send their province.

The Worked All Britain 7MHz contest will take place on Sunday, the 4th of May, from 1000 to 1400 UTC. All entries need to be with the contest manager by the 14th of May. Please note that all Worked All Britain contests use SSB only. Full details of the contest rules can be found on the Worked All Britain website.

Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday the 24th of April 2025

We had yet another week of unsettled geomagnetic conditions. The Kp index peaked at 5.33 on the 21st of April as the solar wind speed hit just above 600 kilometres per second, and active geomagnetic conditions were observed.

This was caused by a massive coronal hole on the Sun’s surface, which measures nearly 700,000km in length. At the time of writing, part of it is still Earth-facing, but the Bz or interplanetary magnetic field is facing North, so its negative effects are not being felt.

The Kp index was down to 3.67 on the morning of Thursday, the 24th of April, but it wouldn’t take much for the Bz to swing southwards and for the Kp index to rise again.

Meanwhile, the solar flux index has risen from a recent low of 148 up to 168. This has meant MUFs over a 3,000km path have reached 25 MHz at times, but have usually been slightly lower. If the Kp index can stay low, there is a good chance of higher MUFs being attainable, but we have probably seen the best of 10m propagation until the autumn.

Much of the recent DX has been worked on slightly lower frequencies, such as VP2VI British Virgin Islands on 40 and 20m, C5R The Gambia on 20 and 12m, and HD8G Galapagos Islands on 20, 17, and 12m. There is still the chance of DX on 10m, but it may be fleeting.

Next week, NOAA predicts that the solar flux index will stay high, perhaps reaching 170 to 175. We may get a slight respite from unsettled geomagnetic conditions from the 26th to the 30th of April, when the Kp index is forecast to be around two to three. However, unsettled geomagnetic conditions are forecast for the beginning of next month, with Kp indices of five or six on the 1st and 2nd of May.

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

Next week, high pressure should dominate, meaning a chance of Tropo for much of the time which will probably favour paths to the east, to Scandinavia or northern Europe. 

Rain scatter won’t have featured much other than over northwest Britain in recent days, and meteor scatter is reducing back to random activity, which tends to be better in the early hours before dawn.

The solar conditions have continued to keep the Kp index up, and there was a fine auroral opening last week on the 16th of April, so for more aurora, it’s still worth checking for when Kp values nudge above five.

As the end of April moves into May, we can start to give serious thought to the coming Sporadic-E season. Hesitant beginnings often show up on 10m and 6m, and, as usual, the digital modes will be best for any weak events. CW and SSB are just possible in the stronger openings, especially on 10m. 

The background rule is that there are usually two preferred activity periods, one in the morning and a second in late afternoon and early evening. However, at the start of the season, there can be a lot of spread in the timings.

EME path losses are at their lowest with perigee today, Sunday the 27th, and the Moon declination is positive and rising. Moon windows will lengthen along with peak elevation, and 144MHz sky noise starts the week low but increases to moderate as the week progresses. From late Sunday to early Monday, the Sun and Moon are close.

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

GB2RS News

Sunday the 20th of April 2025

The news headlines:

As a new benefit, the Society has teamed up with several museums to offer RSGB members discounted entry for 2025. Members can receive between 20% and 50% off admission fees at Amberley Museum, Bawdsey Radar Museum, Internal Fire Museum of Power, PK Porthcurno Museum of Global Communications and The National Museum of Computing. So, whether you’re into engines, radar, transport, computers or communications there’s sure to be something for you. To find out more, visit rsgb.org/partner-museums

Following the RSGB 2025 AGM on Saturday the 12th of April, a brief Board meeting was held. The Board elected Stewart Bryant, G3YSX to continue in the role of Board Chair and Peter Bowyer, G4MJS to continue as Vice Chair. Both will remain in these roles until the 2026 AGM. The Board liaison roles with RSGB committees, Honorary Officers and areas of RSGB strategy have also been agreed. To find out more or to see contact details for each Board Director, go to rsgb.org/board

World Amateur Radio Day was on Friday the 18th of April. It was also on that day in 1925 that the International Amateur Radio Union was formed in Paris. In celebration of this, the RSGB has shared a T & R Bulletin from 1925 that details the original announcement about the IARU’s formation. This unique document has been made publicly available for all radio amateurs to be able to enjoy. To start reading, simply go to rsgb.org/radcom then click on the image to enter the web app and select the ‘RadCom Sample’ option in the header.

The RSGB website has a wealth of information available to you, and the search function is a useful tool to find what you are looking for. However, to make things as straightforward as possible, the Society has updated the contacts page on its website. If you need to get in touch about something specific, you’ll be able to find the correct contact details at a glance. Each Headquarters department is listed with the range of services they offer. For example, you’ll see that the Sales Team can also help with club insurance, Membership Services will help with any issues logging into its online membership portal, and that GB2RS news items should be sent to the RadCom Team. Whatever your query, the Team is there to help. If you need more local help, please contact your Regional Team representatives. Head over to rsgb.org/contact  to find out how to get in touch.

Professor Gwyn Griffiths, G3ZIL is a well-known member of the RSGB Propagation Studies Committee, as well as someone involved with Ham Radio Science Citizen Investigation, also known as HamSCI. In celebration of Citizen Science Month during April, the RSGB has shared Gwyn’s HamSCI presentation from the RSGB 2024 Convention on its YouTube channel. In the talk, Gwyn outlines the organisation’s activities, particularly during the 2023 and 2024 eclipses. Go to youtube.com/theRSGB  to watch the talk now. If you’d like to find out more, join the RSGB for May’s Tonight@8 webinar when HamSCI lead Nathaniel Frissell, W2NAF presents ‘Space weather we can do together’. Both Gwyn and Nathaniel recently won awards in the RSGB 2025 AGM Trophy Presentation. You can also get involved with HamSCI’s preparations for a series of meteor scatter experiments in August and December. You can find further details via hamsci.org/msqp

Have you ever wondered about the origins of the smart doorbell? Although a modern phenomenon, it has a history dating back over 100 years. During the latest series of The Secret Genius of Modern Life, Hannah Fry explores its early origins with a device created by Leon Theremin. During the episode radio amateur Neil, G4DBN, re-creates Leon’s device. The episode will air on BBC2 at 20.00 on Wednesday the 23rd of April. Many of you will know Neil from Season One, Episode One of the series when he re-created the Great Seal Bug. Both episodes are available to watch now via BBC iPlayer.

Please send details of all your news and events to [email protected] The deadline for submissions is 10am on Thursdays before the Sunday broadcast each week.

And now for details of rallies and events

The Cambridge Repeater Group Rally is taking place on Sunday the 27th of April at Foxton Village Hall, Hardman Road, Foxton, Cambridge, CB22 6RN. Doors open at 7.30am for traders and 9.30am to the general public. The entrance fee is £4. The event will include a car-boot sale, trade stands, a bring-and-buy area, catering, disabled facilities, an RSGB Bookstall and a free, marshalled car park. A cash and card burger van will open at 8am. The venue rules state strictly no dogs except assistance dogs on the field. Go to cambridgerepeaters.net for further details and bookings.

The Dartmoor Radio Rally is taking place on Monday the 5th of May at the Yelverton War Memorial Hall, Meavy Lane, Yelverton, Devon, PL20 6AL. Free parking is available. There will be the usual bring and buy, trader stands and refreshments. Doors open at 10am and admission is £3. For further details, please contact Roger by phone on 07854 088882, or email [email protected]

Now the Special Event news

The Spanish national society, URE, is on the air to mark the 100th anniversary of the IARU. Members are active on 160m to 6m until the 30th of April with ten different special event stations, including AO100IARU. Special awards will be available, as well as medals for the top participants from each continent who achieve the highest number of contacts with the stations on different bands and modes. Go to ure.es for further details.

The Portuguese national society, REP, is also activating a number of special callsigns as part of celebrations for the 100th anniversary of the IARU. This includes CR1IARU from the Azores, CR3IARU from Madeira and CR5IARU from mainland Portugal. Members will be active on multiple bands and modes. Look out for activity until the 24th of April. Full details can be found via tinyurl.com/CR1IARU

The Amateur Radio Society of Moldova is operating special event station ER100IARU until Wednesday the 30th of April in honour of the IARU Centenary. Full details can be found via qrz.com

The Kuwait Amateur Radio Society is pleased to announce its participation in the IARU centennial celebrations. Members of the Society will be operating special event station 9K100IARU until Wednesday the 30th of April.

Ten teams of radio amateurs from around the world are commemorating 80 years since Operation Manna and Operation Chowhound. The two operations were humanitarian food drops that helped to relieve the famine in the Netherlands behind Nazi lines late in World War Two. The teams will be active between the 25th and 27th of April on HF, VHF and the DMR Brandmeister Talk Groups unique to this event. A number of the teams are also welcoming visitors and arranging activities at their locations. To find details of Talk Groups for this event, the teams involved, as well as how to collect a commemorative award, go to manna80.radio

Now the DX news

Aldir, PY1SAD is active again from Georgetown in Guyana as 8R1TM until the 26th of April. Aldir will be operating on all bands using CW, SSB, digital and satellite. QSL via eQSL and Logbook of The World.

Arno, DK1HV is active from Greenland as OX/DK1VK until Sunday the 27th of April. He’ll be QRV on 160m to 10m mainly SSB using wire antennas and 100W radio. QSL available via his home callsign.

Dom, 3D2USU is active again as 3D2AJT from Nadi in the Fiji Islands until the end of April. The call sign is in memory of JH1AJT, now Silent Key. QSL via Club Log's OQRS and Logbook of The World.

Now the contest news

On Tuesday the 22nd of April, the SHF UK Activity Contest runs from 1830 to 2130UTC. Using all modes on 2.3 to 10GHz frequencies, the exchange is signal report, serial number and locator.

On Thursday the 24th of April, the 80m Club Championship runs from 1900 to 2030UTC. Using PSK63 and RTTY, the exchange is signal report and serial number.

The UK and Ireland DX CW Contest starts at 1200UTC on Saturday the 26th of April and ends at 1200UTC on Sunday the 27th of April. Using CW on the 80 to 10m bands, where contests are permitted, the exchange is signal report and serial number. UK and Ireland stations also send their district code.

The SP DX RTTY Contest starts at 1200UTC on Saturday the 26th of April and ends at 1200UTC on Sunday the 27th of April. Using RTTY on the 80 to 10m bands, where contests are permitted, the exchange is signal report and serial number. SP stations also send their province code.

Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday the 17th of April 2025

Last week was characterised by increased Kp index numbers and severe geomagnetic storms, peaking at G4. These drove down maximum usable frequencies and disrupted DX contacts, especially on the higher HF bands.

The solar wind speed increased from 380 kilometres per second to around 500 kilometres per second on the 15th and an increase in plasma density was noted as well. Subsequently, the Kp index peaked at 7.67 on Wednesday the 16th, causing visible aurora alerts in the UK.

This was caused by a pair of CMEs that left the Sun on Sunday the 13th of April. We had a total of 22 M-class solar flares over four days, so a CME event was inevitable.

Unsettled geomagnetic conditions are a feature on the declining side of a solar cycle, so we could unfortunately be in for many more.

According to Propquest, MUFs over a 3,000km path fell to below 18MHz for long periods on Wednesday the 16th, before climbing to around 21MHz at the end of the day.

Meanwhile, the solar flux index fell from a high of 170 on Friday the 11th of April to a low of 148 on Wednesday the 16th of April.

Next week, NOAA predicts that the SFI will start the week around 145 but could increase to 165 as the week progresses. Unsettled geomagnetic conditions are forecast for the 22nd to the 24th of April, with a predicted maximum Kp index of four.

As always, keep an eye on solarham.com for daily updates, but more importantly, get on the bands, which are a much more effective guide to HF propagation!

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

The current period of unsettled weather looks likely to continue into the coming week. This does not mean rain every day, but periods of rain or showers with some intervening drier spells. These drier interludes are not really dominated by high pressure, just gaps between the wetter periods, so it's unlikely to produce much significant Tropo.

In terms of propagation, there may be some rain scatter, although it won’t be very reliable. However, the prospects for meteor scatter are more promising with the peak of the Lyrids due on Tuesday the 22nd of April. It is worth checking up on procedures for meteor scatter working if you’ve not done it before and you may find a new part of the hobby to add to your operating schedule.

The prospects for aurora continue to be raised by what seems like an almost daily supply of aurora alerts. Continue to monitor the Kp index for signs of elevated values, where Kp is above five, for radio activity. Early signs such as fluttery signals on the LF and HF bands may suggest it's worth looking on the VHF bands for auroral activity.

As we move towards the new season it is good to get into the habit of looking for Sporadic-E. The Propquest website www.propquest.co.uk shows several useful components for analysing the Es prospects. If you look at the position of the jet streams shown on the Es blog tab, these can produce favourable conditions geographically to give a hint of the right direction in which to listen. The opening season typically favours 10m or 6m.

EME path losses are now decreasing towards perigee on Sunday the 27th of April. Last Friday, the 18th of April, saw minimum Moon declination, so Moon windows will lengthen along with peak elevation. 144MHz sky noise starts this week very high but decreases to low as the week progresses.

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

GB2RS News

Sunday the 13th of April 2025

The news headlines:

If you are aged between 16 and 25 and are passionate about amateur radio, then this news is for you. This year’s Youngsters on the Air Summer Camp will take place between the 18th and 25th of August at the historical Château [SHA-TOW] de Jambville [ZHOM-VIL] near Paris in France. The event is being organised by the French national amateur radio society, REF, and the IARU. It is a chance of a lifetime for young RSGB members to represent their country and their national society. If you are ready for exciting experiences, would like to make new friends and want to help shape the future of amateur radio, then the RSGB would love to hear from you. If you’d like to find out more about what’s involved and to submit an application, go to rsgb.org/yota-camp The closing date for applications is the 2nd of May for Team Leader and the 16th of May for Team Members. Apply today and don’t miss out on this fantastic opportunity.

The RSGB is looking to recruit volunteers from the exam tutor community to help pre-screen documentation prior to public release as part of the process of improving the quality of documents issued by the Exam and Syllabus Review Group (ESRG). The Exam Tutors Review Panel is intended to be an informal group of approximately six tutors who are currently involved in providing training for amateur radio licence exams at any of the three current levels. Panel members will be asked to use their skills to help improve the quality of the syllabus, the questions in the published question bank and other published documentation. They will receive advance copies of documents that are due to be published, and they will be expected to return any comments within an agreed timescale, which typically will be two weeks. The ESRG is not obliged to accept the recommendations from panel members, but if they do not accept a recommended change, they will explain why. All documents and additional correspondence sent to panel members will be under an embargo until the final versions are released to the public. The Exam Tutors Review Panel is intended to run for an initial six months and will then be reviewed. If you are interested in becoming a member of this panel, please email Board Director Len Paget, GM0ONX via [email protected]

The RSGB would like to thank everyone who joined the RSGB 2025 AGM which was held yesterday, the 12th of April. If you missed the live event, you’ll still be able to watch the full livestream on the Society’s YouTube channel. As well as the formal AGM business, the Board answered questions from RSGB members on a wide range of topics. You’ll also be able to watch the President’s review of 2024, delivered by John McCullagh MBE, GI4BWM, who was the RSGB President at the time. The AGM also included a presentation about the Society’s strategy. Led by Board Director Mark Jones, G0MGX, there were contributions from Board Director Ben Lloyd, GW4BML; Spectrum Forum Chair Murray Niman, G6JYB; and the current President Bob Beebe, GU4YOX. Timestamps will be available in the video summary on YouTube, allowing you to skip to any particular section you may want to watch. Go to rsgb.org/agm to find out more about every aspect of the AGM, including personal statements from the new President, Board Directors and Regional Representatives.

Don’t forget that as part of the celebrations of the centenary of the International Amateur Radio Union, the RSGB will be activating the callsign GB0IARU throughout this month. A Commemorative QSL Card is available for QSOs made during the period from the 1st of April to the 30th of April 2025. On qrz.com you can find full details of the special event station, how to apply for your commemorative card, and a spreadsheet showing who is activating the callsign.

World Amateur Radio Day 2025 is taking place on Friday the 18th of April, and coincides with the centenary of the International Amateur Radio Union. This year’s theme is “Entering the Next Century of Amateur Radio Communications and Innovation”. All radio amateurs are invited to take to the airwaves to show their skills and capabilities to the public. You can read more about the event on the IARU website via iaru.org

Please send details of all your news and events to [email protected] The deadline for submissions is 10am on Thursdays before the Sunday broadcast each week.

And now for details of rallies and events

The Moray Firth Amateur Radio Society Surplus Equipment Sale is taking place on Saturday the 19th of April at Roseisle [ROSE-ISLE] Village Hall, near Burghead. Doors open to traders at 10am, and to the general public between 11am and 4pm. There is ample parking on site and catering will be available. Entry is £5, and tables for sellers are £10. Find out more by going to mfars.club

The Cambridge Repeater Group Rally is taking place on Sunday the 27th of April at Foxton Village Hall, Hardman Road, Foxton, Cambridge, CB22 6RN. Doors open at 7.30am for traders and 9.30am to the general public. The entrance fee is £4. The event will include a car-boot sale, trade stands, a bring-and-buy area, catering, disabled facilities, an RSGB Bookstall and a free marshalled car park. A cash and card burger van will open at 8am. The venue rules state strictly no dogs except assistance dogs on the field. Go to cambridgerepeaters.net for further details and bookings.

Now the Special Event news

The Experimental Danish Radioamateurs association, also known as EDR, will be celebrating World Amateur Radio Day on the 18th of April with special event station 5P0WARD. The group is also operating special callsign OZ100IARU between the 19th of April and the 27th of April to celebrate the 100-year anniversary of the IARU. More information can be found at QRZ.com

The Polish Amateur Radio Union is celebrating 95 years since its founding, as well as the centenary of the International Amateur Radio Union. To mark the occasion, ten special event stations are active until the 25th of April. Full details of the event, as well as available awards, can be found via Hamaward.cloud

The Spanish national society, URE, will also be on the air to mark the 100th anniversary of the IARU. Members will be active on 160m to 6m between the 15th of April and the 30th of April with ten different special event stations, including AO100IARU. Special awards will be available, as well as medals for the top participants from each continent who achieve the highest number of contacts with the stations on different bands and modes. Go to ure.es for further details.

Now the DX news

Paul, GW0NGA will be active from Jamestown in St Helena as ZD7PG from the 12th of April until the 19th of April. He will be active on the HF bands during his spare time. QSL via his home callsign and possibly eQSL.

Aldir, PY1SAD is active again from Georgetown in Guyana [GAI-AA-NUH] as 8R1TM until the 26th of April. Aldir will be operating on all bands using CW, SSB, digital and satellite. QSL via eQSL and Logbook of The World.

DA1DX, DK9IP, DM6EE and DL8LAS will be active from Anegada [A-NE-GA-DA] Island in the British Virgin Islands as VP2VI from the 10th to the 27th of April. Full details via QRZ.com

Now the contest news

On Tuesday the 15th of April, the 1.3GHz UK Activity Contest runs from 1900 to 2130UTC. Using all modes on the 23cm band, the exchange is signal report, serial number and locator.

On Wednesday the 16th of April, the 80m Club Championship runs from 1900 to 2030UTC. Using SSB on the 80m band, the exchange is signal report and serial number.

On Thursday the 17th of April, the 70MHz UK Activity Contest runs from 1900 to 2130UTC. Using All modes on the 4m band, the exchange is signal report, serial number and locator.

Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday the 10th of April 2025

A fast solar wind caused some disruption last week, often sending the Kp index up to five, with many three-hour periods in excess of four.

The solar wind speed was in the 600-700 kilometres per second range, which caused a moderate, G2, geomagnetic storm and visible aurora at higher latitudes mid-week. Glancing CMEs that left the Sun on the 9th of April brought a small chance of enhanced geomagnetic activity at the end of the week.

Meanwhile, the solar flux index declined slightly from a high of 184 on the 5th of April to 167 on Thursday the 10th. There have been quite a few C-class solar flares, but only two M-class flares and no X-class events over the past seven days.

This geomagnetic activity has taken its toll on HF propagation, with lower critical frequencies at times and lower MUFs. This, coupled with the start of a change to summer ionospheric conditions, has meant that MUFs over a 3,000km path have often struggled to get past 19.7MHz at times.

We have probably seen the best of the long-range 10m propagation until the autumn. But we will have Sporadic-E and its associated short skip from next month to make up for it.

Next week NOAA predicts that the solar flux index will fall further, perhaps to between 135 and 140 by the 15th of April. Geomagnetic conditions are also likely to improve with a Kp index of two to three, forecast for the period after tomorrow, the 14th of April. We may expect more problematic geomagnetic conditions, with a predicted Kp index of four, from the 21st to the 24th of April.

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

The long spell of fine settled weather and strong Tropo is leaving us for a while, starting this weekend, and the high pressure is giving way to slow-moving areas of low pressure with cloud and rain for the coming week.

Although it won’t rain all the time it will be considerably wetter than recent weeks, with some heavy spells of rain at times and good prospects for rain scatter on the GHz bands. It is possible that there could be some thunder in the heavier rain, so it’s now the season to be aware of lightning risk.

The meteor scatter prospects are staggering towards the 22nd of April Lyrids, which peak on Tuesday of the following week, so we’re still probably relying on random activity for most of this coming week, but with improving chances.

The solar conditions have been feeding low-level auroral activity and it remains a good time of the year when some effective auroral conditions can appear - so stay alert to the state of the Kp index, just in case.

The good news at this time of the year is that Sporadic-E will eventually make an appearance, usually on 10m or 6m, and is quite often first picked out on the digital modes. It will be into late April before we need to get too excited about this, but there is no harm in getting a set of beacons in mind for tracking an opening.

Remember the main characteristic of Es is that it starts on the lower frequencies like 10m, and works up through 6m to 4m and then finally 2m in a high-summer opening.

EME path losses are at their maximum at apogee this evening, the 13th, and Moon declination is negative and falling further. Moon windows will continue to shorten with peak elevation reaching only eight degrees at the end of next week. 144MHz sky noise starts the week low but will increase during the week to more than 2300 Kelvin on Friday.

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

GB2RS News

Sunday, the 6th of April 2025

The news headlines:

The RSGB 2025 AGM is taking place at 10 am next Saturday, the 12th of April. The Society is encouraging RSGB members to take the time to vote for the two resolutions that need your approval. During the AGM, Board members will be answering your questions. Whether your question is about the RSGB, the Board, any of the RSGB services or even the future of amateur radio, your contribution to the discussion is important. Priority is given to questions submitted live by Zoom or by the Society’s web form, so get in touch now rather than waiting for the live chat option on the day. The Zoom question deadline is 9 am on Monday, the 7th of April, and the deadline for submitting a written question is when voting ends at 0900 on Thursday, the 10th of April. Following the formal business of the AGM, the RSGB is delighted that RSGB President John McCullagh, GI4BWM will be sharing his review of 2024. There will also be announcements of trophies and awards, the construction competition results, as well as a presentation about the Society’s strategy, which will be led by Board Director Mark Jones, G0MGX. There will be contributions from Board Director Ben Lloyd, GW4BML; Spectrum Forum Chair Murray Niman, G6JYB; and Bob Beebe, GU4YOX who at that point will be the new RSGB President. Make sure you don’t miss out by putting the date in your diary now. Go to rsgb.org/agm  to find further information.

The RSGB is pleased to announce that Tom Wardill, 2E0JJI has been appointed as the RSGB Maker Champion. In his role, Tom will assist the RSGB to take amateur radio to new audiences in the hackspace and makerspace communities. Tom will also investigate opportunities to encourage crossover in both directions, offering new areas of experimentation to more traditional license holders. If you have any ideas you’d like to discuss with Tom or would like to congratulate him on his appointment, please email him via [email protected]

A reminder that the RSGB remote invigilation team will be taking a break over the Easter weekend. You will be able to book to take an exam on Friday, the 18th and Saturday, the 19th of April; however, no exam slots will be available on Sunday, the 20th or Monda,y the 21st of April. Exam bookings will resume as normal after that.

The next webinar in the RSGB’s Tonight@8 series will be live tomorrow, Monday the 7th of April. Nick Wood, M0NTV will show you how to use a regular glue stick housing in a rather novel way to form the basis of a variable tuning inductor in a homemade 40m receiver. Nick has a lifelong fascination with radio and electronics, and an insatiable curiosity to discover how things work. His passion is for designing and building his own radio equipment, particularly SSB transceivers, and he has just completed his sixth. Visit rsgb.org/webinars  to find out more. Join the presentation live on the RSGB YouTube channel or special BATC channel and ask questions via the live chat.

The GB3WR VHF Repeater, located on the Mendip Hills in Somerset, was switched back on at 12:30 pm on the 16th of March 2025. The Group is delighted to report that it is working as well as before. It covers a wide area of the South West, and the Bristol Channel area. Amateur stations are regularly heard from the south of the Midlands, South Wales and as far south as Swanage and Basingstoke to the east. The Mendip Repeater Group would like to express its thanks for the generosity of all who have made it possible to put GB3WR back on the air. Find out more via gb3wr.uk

One of the GB2RS newsreaders is retiring from reading the news ahead of his upcoming 101st birthday this Saturday, the 12th of April. Peter Valentine, G0NQZ from Eastbourne, remains an active radio amateur and operates daily, as well as taking part in regular nets such as ISWL and RAOTA. The Society would like to thank Peter for his dedication to GB2RS and wishes him a very happy 101st birthday!

Please send details of all your news and events to [email protected]. The deadline for submissions is 10 am on Thursdays before the Sunday broadcast each week.

And now for details of rallies and events

The Yeovil Amateur Radio Club QRP Convention is taking place on Saturday, the 12th of April at Digby Hall in Sherborne. Doors open at 9.30 am. The convention will include traders, bring and buy, club stalls and a café. For more information, please visit the club’s website via yeovil-arc.com

The Holsworthy ARC Spring Radio Rally is taking place on Sunday, the 13th of April at the Holsworthy Livestock Market, New Market Road, Holsworthy, Devon, EX22 7FA. There will be traders and a bring-and-buy. Catering will be available. Doors open to traders from 8 am and to the public from 10 am. Entry costs £3 per person. The venue has disabled access.

Also taking place on Sunday, the 13th of April, is the Northern Amateur Radio Societies Association Exhibition, or NARSA for short. It is also known as the Blackpool Rally. The event will take place at Norbreck Castle Exhibition Centre, Blackpool, FY2 9AA. For further details, please go to narsa.org.uk  or contact Dave, M0OBW, on 07720 656542, or via email using [email protected]

Now the Special Event news

The Royal Air Force Amateur Radio Society, also known as RAFARS, has started its popular Airfields On The Air event. RAF Stations are active this weekend as well as on the 12th and 13th of April. More information can be found via rafars.org/rafaota

The Polish Amateur Radio Union is celebrating 95 years since its founding, as well as the centenary of the International Amateur Radio Union. To mark the occasion, ten special event stations will be active between the 11th and the 25th of April. Full details of the event, as well as available awards, can be found via Hamaward.cloud

Now the DX news

The Toshiba Fuchu Amateur Radio Club, JA1YVT, is celebrating its 60th anniversary and, as part of the celebration, team members are staging a DXpedition to the Ogasawara Islands. They will be QRV as JA1YVT/JD1 until Thursday, the 10th of April. The operating schedule, frequencies and QSL information are available via QRZ.com

DA1DX, DK9IP, DM6EE and DL8LAS will be active from Anegada Island in the British Virgin Islands as VP2VI from the 10th to the 27th of April. Full details via QRZ.com

Now the contest news

The FT4 International Activity Day started at 12:00 UTC on Saturday, the 5th of April and ends at 12:00 UTC today, Sunday, the 6th of April. Using FT4 on the 160 to 10m bands, where contests are permitted, the exchange is your report.

The SP DX Contest started at 1500 UTC on Saturday, the 5th of April and ends at 1500 UTC today, Sunday, the 6th of April. Using CW and SSB on the 160 to 10m bands, where contests are permitted, the exchange is signal report and serial number. SP stations also send their province code.

Today, Sunday the 6th of April, the UK Microwave Group Low Band Contest runs from 1000 to 1600 UTC. Using all modes on 1.3 to 3.4GHz frequencies, the exchange is signal report, serial number and locator.

Also today, Sunday the 6th of April, the Worked All Britain Data Contest runs from 1000UTC to 1400UTC and from 1700 to 2100UTC. Using FT8, FT4, JS8, RTTY and PSK on the 80, 40 and 20m bands, the exchange is signal report, serial number, and your Worked All Britain square. Club and multi-operator stations can only score points in one of the two operating periods. Entries need to be with the contest manager by the 17th of April. The full rules are available on the Worked All Britain website.

On Monday, the 7th of April, the IRTS 70cm Counties Contest runs from 1300 to 13:30 UTC. Using FM and SSB on the 70cm band, the exchange is signal report and serial number. EI and GI stations also send their country.

Also on Monday, the 7th of April, the IRTS 2m Counties Contest runs from 1330 to 1500 UTC. Using FM and SSB on the 2m band, the exchange is signal report and serial number. EI and GI stations also send their country.

On Monday, the 7th of April, the 80m 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 of April, the 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 of April, 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 of April, the 432MHz FT8 Activity four-hour Contest runs from 1700 to 2100 UTC. Using FT8 on the 70m band, the exchange is a report and four-character locator. Also on Wednesday, the 9th of April, the 432MHz FT8 Activity two-hour Contest runs from 1900 to 2100 UTC. Using FT8 on the 70cm band, the exchange is a report and a four-character locator. Stations entering the four-hour contest may also enter the two-hour contest.

On Thursday, the 10th of April, the 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.

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

We had a week of mixed solar conditions, but it ended with an SFI of 182 and a Kp of 3.67 on Thursday, the 3rd of April.

The geomagnetic field declined to quieter levels following a prolonged period of active, Kp4 conditions earlier on Wednesday due to solar wind enhancements. This impacted propagation, with the critical frequency struggling to get much above 7 MHz on Wednesday.

Compare this with the following day, when the critical frequency hit 10.4MHz by 0830 UTC. Nevertheless, there was DX to be worked on Wednesday with FT8 allowing signals from Australia, Japan, Indonesia, China, and Surinam to get into the UK on 21MHz.

The solar proton flux was also high on Tuesday, the 1st of April, affecting signals passing through the polar regions, but this had declined by Thursday and was heading back to normal levels. This was due to a large CME observed off the east limb of the Sun on Frida,y the 28th of March. If it had been Earth-directed, we may have seen a massive aurora.

Next week, NOAA predicts that the solar flux index will stay in the 175-185 region. A Kp of six was forecast for yesterday, Saturday the 5th of April, followed by a further period of unsettled geomagnetic conditions due to an enhanced solar wind.

If this is the case, we may not get more settled conditions until the 14th to the 16th of April.

Nevertheless, this remains a good time for North-South HF paths, such as the UK to South Africa, and UK to South America.

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

The old forecasting maxim that the ‘longer a high lasts, the longer it will last’ is built upon the presence of blocked upper air weather patterns. When the jet stream gets so distorted into a high-amplitude north/south wave, its lateral movement, from west to east, becomes very slow.

On the upper air charts, this takes the shape of the Greek letter omega, and this is the current set-up. It means that the weather associated with it also lasts a long time.

In this case, it’s the high pressure and its spell of fine weather that is likely to last for the whole of the coming week. The position of the high will change, though, starting over the North Sea and ending over the UK and the nearby Atlantic. This means that Tropo will be the mode of choice for the coming period, which includes the 70cm UK Activity Contest on Tuesday and the 6m UK Activity Contest on Thursday.

Rain scatter is unlikely during this extended period of dry weather.

The meteor scatter options are still mainly driven by random meteors for the coming period into next week, but the next important shower, the Lyrids, peaks on the 22nd of April. The auroral alerts continue to come through, raising interest. As usual, the clue will be fluttery-sounding signals on the bands, particularly noticeable on CW, but they can also be pronounced on speech transmissions. Monitor the Kp index for values above Kp5.

There have been a few trans-equatorial openings to Southern Africa on 50MHz digital modes for the fortunate few who live in the extreme south and southwest of the UK, but it did extend up to Cambridgeshire and Suffolk briefly on some days last week.

The long drought of Sporadic-E will soon be over, but we’re still in the realms of very isolated events for 10m and 6m, which will be short-lasting. The jet stream, which can be a good clue as to potential locations, suggests looking to Scandinavia, the Baltic and northern Europe.

EME path losses are falling again, but Moon declination has been at its highest this weekend, so we have long Moon windows. 144MHz sky noise is low throughout the coming week.

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

GB2RS News

Sunday, the 30th of March 2025

The news headlines:

Do you have a question about the RSGB’s strategy? Perhaps you have a query about recent licence changes? Or maybe you’d like to understand more about membership growth? Whatever the topic, the Society is asking you to get in touch. RSGB Board members will be answering your questions during the RSGB 2025 AGM on Saturday, the 12th of April. You can submit your question in three ways; live via Zoom, send a written question in advance, or during the live chat on the day. If you’d like to ask a question about the formal part of the AGM, you’ll need to do this via Zoom or by submitting a written question in advance. Don’t miss out on this opportunity to discuss what matters to you. Your participation in the AGM is important, and the Society looks forward to hearing from you. Find out more about how to be involved and the deadlines for submitting questions by going to rsgb.org/agm

As part of its modernisation of the exam systems, the RSGB has introduced online forms for reporting possible errors found in exam questions. These forms replace the current procedure of writing to the Exam Department. RSGB Examinations Standards Chair Tony Kent, G8PBH, explained that there are two forms. The first can only be submitted by exam candidates and is to formally challenge questions in actual exams, where the outcome of a challenge may affect a candidate’s result. The second form can be submitted by anyone and is for informal queries of published exam questions, for example, in mock exams. A separate form is needed for each question that you challenge. Please check carefully that you are using the correct form, otherwise, it may delay the process. Your query will be considered by the RSGB Examinations and Syllabus Review Group, who will let you know the outcome. For more information and to find the forms, go to rsgb.org/exam-challenges

The next webinar in the RSGB’s Tonight@8 series will be with Nick Wood, M0NTV, on Monday, the 7th of April. Nick will show you how to use a regular glue stick housing in a rather novel way to form the basis of a variable tuning inductor in a homemade 40m receiver. After a brief description of a Direct Conversion Receiver and a short technical explanation of how it works, Nick will dive into four separate modules. At the end of the webinar, he will string it all together, and you’ll be able to see some video footage of how it sounds and what it can do. Visit rsgb.org/webinars  to find out more. Join the presentation live on the RSGB YouTube channel or special BATC channel and ask questions via the live chat.

The RSGB is delighted to announce that Chris Aitken, MM0WIC, who is the current RSGB Youth Champion for Schools, is taking on the new position of RSGB Youth Chair. For now, Chris will continue to fulfil his Youth Champion for Schools role but will also take on more responsibilities by leading the Youth Champion team. Chris will work closely with the Board Liaison for Youth, and IARU Youth contacts, to help attract more UK youngsters to amateur radio. Find out more about youth activities by going to rsgb.org/youth

If you live in Region 9, London and the Thames Valley, why not support fellow radio amateurs in your area? There are several volunteer vacancies within the region, including several District Representative positions, as well as the Regional Representative role. If you are passionate about amateur radio, enjoy talking with people, and want to give something back to the hobby, get in touch. Go to rsgb.org/volunteers to find out more, and then email the Regional Forum Chair Keith Bird, G4JED, via [email protected]

SOS Radio Week is an annual event that celebrates the invaluable life-saving work of the volunteers of the Royal National Lifeboat Institution, the National CoastWatch Institute and the independent lifeboats around the coasts of the British Isles and the Channel Islands. This year, the event starts at 0000 UTC on the 1st of May and concludes at 2359 UTC on the 31st of May. SOS Radio Week stations can be run by individuals or groups, from home or at a special location. To register, go to sosradioweek.org.uk

This year’s Mills on the Air weekend is taking place on the 10th and 11th of May. Find out more at tinyurl.com/millsontheair  or search Mills on the Air on Facebook.

Please send details of all your news and events to [email protected]. The deadline for submissions is 10 am on Thursdays before the Sunday broadcast each week.

And now for details of rallies and events

The Hack Green Military Surplus and Military Radio Hangar Sale is taking place on Sunday, the 6th of April at Hack Green Secret Nuclear Bunker, Nantwich, Cheshire, CW5 8AL. Items on sale will include electronic equipment, amateur radio gear, components, military radio items and vehicle spares. For further details, please go to hackgreen.co.uk  or email [email protected]

The Yeovil Amateur Radio Club QRP Convention is taking place on Saturday, the 12th of April at Digby Hall in Sherborne. Doors open at 9.30 am. The convention will include traders, bring and buy, club stalls and a café. For more information, please visit the club’s website at yeovil-arc.com

Now the Special Event news

The Royal Air Force Amateur Radio Society, also known as RAFARS, will be holding its popular Airfields On The Air special event activity from the 1st of April. RAF Stations will be activated primarily during the 5th and 6th of April, as well as the 12th and 13th of April. More information can be found via rafars.org/rafaota

The Polish Amateur Radio Union is celebrating 95 years since its founding, as well as the centenary of the International Amateur Radio Union. To mark the occasion, ten special event stations will be active between the 11th and 25th of April. Full details of the event, as well as details of available awards, can be found via Hamaward.cloud

Now the DX news

Alex, K6VHF/HR9 will again be active from the 30th of March until the 6th of April from Roatán island, IOTA reference NA-057. He’ll be QRV on 80m to 6m using verticals, Hexbeam, Slopers and a Delta loop using FT8, FT4, SSB, RTTY and CW. QSL direct via K6VHF, OQRS Club Log, and Logbook of The World.

Aldir, PY1SAD, is active again from Georgetown in Guyana as 8R1TM until the 26th of April. Aldir will be operating on all bands using CW, SSB, digital and satellite. QSL via eQSL and Logbook of The World.

Now the contest news

The CQ World Wide WPX SSB Contest started at 0000UTC on Saturday, the 29th of March, and ends at 2359 UTC today, Sunday, the 30th of March. Using SSB on the 160 to 10m bands, where contests are permitted, the exchange is signal report and serial number.

On Tuesday, the 1st of April, the 144MHz FM Activity Contest runs from 1800 to 1855 UTC. Using FM on the 2m band, the exchange is signal report, serial number and locator.

Also on Tuesday, the 1st of April, the 144MHz UK Activity Contest runs from 1900 to 2130 UTC. Using all modes on the 2m band, the exchange is signal report, serial number and locator.

On Wednesday, the 2nd of April, the 144MHz FT8 Activity four-hour Contest runs from 1700 to 2100 UTC. Using FT8 on the 2m band, the exchange is a report and a four-character locator.

Also on Wednesday, the 2nd of April, the 144MHz FT8 Activity two-hour Contest runs from 1900 to 2100 UTC. Using FT8 on the 2m band, the exchange is a report and four-character locator. Stations entering the four-hour contest may also enter the two-hour contest.

The UK and Ireland Contest Club 80m Contest is on Wednesday, the 2nd of April and runs from 2000 to 2100 UTC. Using SSB on the 80m band, the exchange is your six-character locator.

The FT4 International Activity Day starts at 1200 UTC on Saturday, the 5th of April and ends at 1200 UTC on Sunday, the 6th of April. Using FT4 on the 160 to 10m bands, where contests are permitted, the exchange is your report.

The SP DX Contest starts at 1500 UTC on Saturday, the 5th of April and ends at 1500 UTC on Sunday, the 6th of April. Using CW and SSB on the 160 to 10m bands, where contests are permitted, the exchange is signal report and serial number. SP stations also send their province code.

 Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday the 27th of March 2025

Last week’s space weather was dominated by a large coronal hole on the Sun. This was probably one of the largest we have seen for many years.

Moderate, G2, geomagnetic storming was observed following the arrival of a solar wind stream from the hole, with the wind speed exceeding 600 km/s on Wednesday, the 26th. This pushed the Kp index to 6.33, depressing the MUF slightly.

Luckily, the daytime MUF over a 3,000km path mostly stayed above 28 MHz, but it was slow to rise on Thursday, the 27th, when it took until 0900 UTC to reach 28 MHz. At the time of writing, the solar wind speed was more than 800km/s, so we can expect more disruption until at least Saturday, the 29th.

Meanwhile, the solar flux index declined to 152 by Thursday, the 27th, with only four small sunspot regions visible.

CDXC members have been discussing working New Zealand in the morning at the ZL sunset, often on low power. Listen and look for ZL4OL and ZL2CC, usually on FT8, but if conditions allow CW and SSB. 20m or 40m seems to be the favourite, and the VarAC data mode seems popular in ZL as well.

Next week, NOAA predicts the solar flux index will climb again, perhaps to 180 by the 4th of April. However, unsettled geomagnetic conditions are forecast again, beginning on the 3rd. We may expect the Kp index to reach six, which could be the start of at least ten days of disruption.

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

The overall picture for the weather patterns in the coming week is that of high pressure, which means that Tropo should be available as a good mode for VHF bands.

There can be quite strong temperature inversions in the region of large well-developed areas of high pressure. The best performance will usually be around the edges of the high where the height of the inversion and ducting layer is typically between 0.5km and 2km above the ground, and can cover large distances for excellent DX prospects.

Occasionally, a shallow ducting layer can form near the ground overnight but often disperses by mid-morning. If you are in a good inversion region, try SSB or CW on the VHF/UHF bands, as paths of up to 1,500km can often be achieved from a good ‘tropo lift’.

The reverse side of the high-pressure systems is that we will have low pressure nearby, mainly to the north and west of the UK. Any potential for rain scatter will mainly be over northwestern Britain, although an active front that was moving south on Friday, the 28th of March, was a good candidate for chance rain scatter on the GHz bands.

The prospects for meteor scatter are still largely dependent upon random meteors, which are usually best in the hours before dawn. Current solar activity will continue to trigger auroral alerts in the coming week.

Now onto Sporadic-E, and last week we had a few out-of-season isolated foEs ‘blips’ to between 5- 7 MHz, which was enough to produce propagation on 10m and 6m, albeit very fleetingly.

There have already been some equinox-related 6m trans-equatorial propagation or TEP workable from the Southern part of the country, so keep an eye open late morning for Africa and late afternoon for South America. 

EME path losses have continued to improve until perigee this morning, the 30th of March. Moon declination is still falling, and reached a minimum last Friday, the 28th. Moon windows will increase throughout the coming week. 144MHz sky noise is low, apart from Saturday the 29th when the Sun was close to the Moon in the sky, rising to moderate next Thursday before dropping back to low for the weekend.

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

GB2RS News

Sunday the 23rd of March 2025

The news headlines:

The RSGB is excited to give you a first look at its new app! The web version has just been launched and is a one-stop shop for all RadCom publications and club newsletters. You can find the web version at rsgb.org/radcom It gives RSGB members easy access to over ten years of back issues of RadCom, as well as RadCom Basics and Plus. The Society will be adding more back issues of RadCom from the archive in the coming months, making it even more valuable. All you need is your RSGB membership portal details to access the editions. If you’re not an RSGB member, you can still view a sample edition of RadCom through the web version of the app. If you like what you see, you can become an RSGB member via rsgb.org/join which will give you access to the back issues of RadCom and its sister publications. Watch this space for news of the release of the RSGB mobile app later this year.

For some roles in the RSGB elections, a single nomination was received. These include the two vacancies for Elected Board Directors. Peter Bowyer, G4MJS and Mark Savage, M0XIC will each take up the role of Board Director at the end of the RSGB AGM on the 12th of April 2025. Both were interviewed separately to enable RSGB members to hear their views on the current issues facing amateur radio and the Society. Their answers were combined into two videos: the first ‘short’ video is just two quick questions, and the second video is a more in-depth interview. You can watch them both on the RSGB website and its YouTube channel. For more information about each of these unopposed candidates, see the April 2025 issue of RadCom or go to rsgb.org/candidates

The RSGB 2025 AGM will take place at 10 am on Saturday the 12th of April. The event will be held online to ensure that as many members as possible can watch and take part. The formal business of the meeting will include the results of members’ votes on the resolutions and details about the election. The RSGB President John McCullagh, GI4BWM will give a video review of 2024, and the Society will announce the recipients of its annual awards and trophies, as well as the winners of its construction competition. You can ask the Board questions on the day via Zoom or the YouTube live chat, or by submitting a written question in advance. After the main AGM meeting, the RSGB is delighted to have a presentation about the Society’s strategy. Led by Board Director Mark Jones, G0MGX, there will also be contributions from Board Director Ben Lloyd, GW4BML; Spectrum Forum Chair Murray Niman, G6JYB; and Bob Beebe, GU4YOX who will at that point be the new RSGB President. Find out more by going to rsgb.org/agm

Maritime Radio Day 2025 starts at 1200UTC on the 14th of April and finishes at 2300UTC on the 15th of April. The annual event takes place to commemorate the almost 100 years of wireless telegraphy service for seafarers, which ended in the UK with the closure of Portishead Radio on the 30th of April 2000. This event is a great opportunity to have a QSO with former Marine Radio Officers and Coast Station professionals who will be exchanging details of their previous ships and coast stations. The mode of operation is CW with all HF bands being used, including WARC. A certificate of participation will be issued to everyone who submits results. Amateur licence holders are invited to register to take part as Friends of Maritime Radio Day. Shortwave listeners may also submit logs. For more information and to register, go to radioofficers.com/mrd-2025

Amateur Radio Clubs On The Air has launched a new activity for radio amateurs to promote their club, have some fun and collect points for an award. All bands and modes may be used including SSB, CW, FM, RTTY, FT8, FT4 and other digital modes. This is an ongoing award, and contacts may be claimed from the 23rd of March onwards. You can find full details on the Leicester Radio Society website at g3lrs.org.uk, via the G3LRS page at QRZ.com  or by emailing [email protected]

Please send details of all your news and events to [email protected]  The deadline for submissions is 10 am on Thursdays before the Sunday broadcast each week.

And now for details of rallies and events

The Pencoed and District Amateur Radio Club Rally is on Sunday the 30th of March at Sarn and Bryncwils Social Club, Bryncoch Road, Sarn near Bridgend, CF32 9NY. Entrance is £2.50. Tables are available at £10 each. Refreshments will be available. Public access to the event is from 10 am, with trader access from 8 am. Please contact Ieuan Jones via 07791 709 691 for further information.

The Dunstable Downs Radio Club will be holding its Annual National Amateur Radio Car Boot Sale at the usual venue, Stockwood Park in Luton, on Sunday the 18th of May.  Excluding a break for Covid-19, this is the 40th consecutive year that the event has been run.

Now the Special Event news

There is still time to work special callsign GB1KBR. Radio amateurs in Scotland are on the air until the end of March to celebrate the start of the official handover of the Commonwealth Games Kings Baton by His Majesty King Charles at Buckingham Palace for the Glasgow 2026 Commonwealth Games. Activity is on HF, SSB, CW and digital modes. QSL via Logbook of The World, eQSL and QRZ.com  An award program is available via the HamAward platform. For further information on the Glasgow 2026 Commonwealth Games please visit glasgow2026.com

The Polish Amateur Radio Union is celebrating 95 years since its founding, as well as the centenary of the International Amateur Radio Union. To mark the occasion, ten special event stations will be active between the 11th and 25th of April. Full details of the event, as well as details of available awards, can be found via Hamaward.cloud

Now the DX news

Heath, VK3TWO is active from Fiji as 3D2TWO until the 27th of March. The station will be active on the 40 to 10m bands using SSB and FT8. More information can be found at QRZ.com

Bud, AA3B will again be active from Antigua as V26K between the 25th of March and the 2nd of April. He’ll be participating in the CQWPX SSB contest. Outside of this, Bud will be focusing on mainly using CW. QSL via home call, Logbook of The World and OQRS.

Aldir, PY1SAD is active again from Georgetown in Guyana as 8R1TM until the 26th of April. Aldir will be operating on all bands using CW, SSB, digital and satellite. QSL via eQSL and Logbook of The World.

Now the contest news

On Tuesday, the 25th of March, the SHF UK Activity Contest runs from 1930 to 2230UTC. Using all modes on 2.3 to 10GHz frequencies, the exchange is signal report, serial number and locator.

On Wednesday, the 26th of March, the UK and Ireland Contest Club Contest runs from 2000 to 2100UTC. Using CW on the 80m band, the exchange is your six-character locator.

On Thursday, the 27th of March, the 80m Club Championship Contest runs from 2000 to 2130UTC. Using SSB on the 80m band, the exchange is signal report and serial number.

The CQ World Wide WPX SSB Contest starts at 0000UTC on Saturday the 29th of March and ends at 2359UTC on Sunday the 30th of March. Using SSB on the 160 to 10m bands, where contests are permitted, the exchange is signal report and serial number.

 Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday the 20th of March 2025

Last week was pretty unremarkable from an HF perspective. After the disturbed geomagnetic conditions on the 12th to the 14th when the Kp index rose to five, conditions were a little more settled.

The solar flux index hit 204 on the 17th of March but then declined back to the 180s.

Having said that things were settled, the Kp index did exceed four for three periods on the 19th, peaking at 4.67. This had the effect of reducing the MUF over a 3,000km path to 21-24MHz.

We also had two M-class solar flares on the 17th and the 19th, with the latter causing a coronal mass ejection that may give Earth a glancing blow around the 22nd of March.

As spring progresses, we may find the F2-layer MUF dropping as we move to summer ionospheric conditions, perhaps to be replaced by enhanced sporadic-E conditions on 10 metres instead.

Next week, NOAA predicts that the solar flux index may drop further, perhaps hitting 150 on the 28th. Unsettled geomagnetic conditions are forecast for the 25th to the 28th, with a maximum Kp index of five.

As we said last week, this is now a peak period for auroral activity, given the angle that the Earth makes with the Sun. The 'Russell-McPherron' effect is down to the alignment of the Sun and Earth around the spring and autumn equinox and means that you are twice as likely to experience the aurora in spring and autumn than in winter and summer.

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

The recent fine weather has provided some useful Tropo. This has been mainly towards the east and into the near continent, which seemed like nice timing for the 1.3GHz UK Activity Contest last Tuesday evening.

Despite this, many participants reported conditions as poor. The high is now moving away and by the time you hear this, it will be a predominantly low-pressure weather sequence from now on. This means limited Tropo in the coming week, and rain scatter comes to the fore as a mode of choice if you have a GHz band set up.

The solar conditions continue to provide a trickle charge of auroral alerts, but not enough for any significant operating advantage. As usual the message is to keep on top of things by monitoring the Kp index for values over 5.

Meteor scatter remains largely in the gift of random meteors, so it's an early start to catch the pre-dawn peak of random meteors if you are so persuaded.

Lastly, a mention of Sporadic-E which is still in its close season. We have a while to wait until later next month when we could expect the occasional stirrings on 10m.

EME path losses continue to improve until the Moon’s perigee (its closest point to Earth) on the morning of the 30th of March. Moon declination has been falling, reaching a minimum yesterday, the 22nd.

So again, we have short Moon windows and reduced peak Moon elevation. 144MHz sky noise started high on Friday the 21st of March but will drop back to low by the middle of next week.

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