GB2RS News Sunday the 2nd of July 2023 The news headlines: RSGB Tonight@8 webinar High-altitude balloon launch Alexanderson Day     Don’t forget that the RSGB’s next Tonight@8 webinar is this Monday the 3rd of July, when Eric P. Nichols, KL7AJ will be presenting “Receiving antennas are different”. The Tonight@8 webinars are live-streamed for free on the RSGB’s YouTube channel and special BATC channel, allowing you to watch the presentations and ask questions online. You can find out more at rsgb.org/webinars The team from hi-impact, based on the Wirral, is planning another high-altitude balloon launch. This time, working alongside staff and pupils from West Kirby School and College, they will launch a high-altitude balloon at 11 am, on the 11th of July 2023, from their usual location in Cilcewydd, near Welshpool in Wales. They will be running a HABduino and encourage all amateurs and short-wave listeners to upload telemetry to SondeHub. The frequency will be 434.650MHz USB, transmitting 50 Baud RTTY, 425Hz Shift and using 8N1 data format. The callsign is WKRS_HAB. More information can be found on hi-impact’s Facebook page and on Twitter via @hiimpactconsult Today, Sunday the 2nd of July is Alexanderson Day and the Alexander Association plans to activate the Grimeton VLF transmitter. The transmitter is located in Sweden and is the only remaining example of an early radio transmitter known as an ‘Alexanderson Alternator’. To read more about the Alexander Association visit tinyurl.com/ALEXDAY23 Marcus, G0IJZ has recently carried out antenna modelling of the Grimeton VLF antenna using NEC-5 software. You can read more about this on a blog that Marcus has contributed to via tinyurl.com/MWALDEN Amateurs are reminded that the special callsign GB23C, used to celebrate the Coronation of King Charles III and Queen Camilla, stopped being available for use on Friday the 30th of June. The availability of special callsigns GB23BAA to GB23BZZ, used for Beaconnect events, also ended at the same time. The optional ‘R’ Coronation regional secondary locator prefix is also no longer available for use. The RSGB’s National Radio Centre at Bletchley Park will be closed on the morning of Monday the 3rd of July. This is to allow time for work to install a new amateur TV display. Following the work, the Centre plans to re-open around lunchtime. This year the popular British Inland Waterways on the Air event will take place between the 26th and 28th of August. The event is open to amateurs who use canals, towpaths, rivers, lakes or reservoirs for work or recreation. Registration for the event is now open. To sign up, visit Nunsfield House Amateur Radio Group’s website, nharg.org.uk, and follow the ‘BIWOTA 2023’ link. And now for details of rallies and events The Barford Norfolk Radio Rally is taking place today, Sunday the 2nd of July. The venue is Barford Village Hall and Green, Barford, Norwich, NR9 4AB. The doors open at 9 am for visitors and 8 am for traders. The event will feature trade stands, car boot sales, bring and buy, a raffle, repeater groups, catering and free car parking. Entry costs £2.50 per person. Under 16s will be admitted free of charge. For more information contact [email protected] and visit norfolkamateurradio.org The Cornish Radio Amateur Club Rally will take place on Sunday the 9th of July at Penair School, Truro, Cornwall, TR1 1TN. Doors open at 10.30 am and admission is £3. There will be traders, bring and buy and club stalls. Car parking and catering are available on-site. Contact Ken, G0FIC on 01209 821073 for more information. The McMichael Radio and Electronics Rally and Car Boot Sale will take place on Sunday the 16th of July. The venue will be Reading Rugby Club which offers a bar and catering facilities and has ample free parking. Admission will be £3 per person and £10 per table for traders. Berkshire Lowland Search and Rescue will be in attendance to provide a First Response s