Re: [UKHAS] Digest for ukhas@googlegroups.com - 3 updates in 2 topics

[Pietro Molina]

I have one. But I'm not sure it's a good idea to send it from Italy...
If you want it, send me some instructions. 

Pietro I2OIM

Il giorno mar 27 gen 2026 alle ore 02:15 <uk...@googlegroups.com> ha scritto:

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• RS41s - 1 Update
• Balloonatic crossing the UK - 2 Updates

RS41s

Steve <st...@randomaerospace.com>: Jan 26 03:23PM Has anyone got any spare RS41s they are prepared to donate to a good cause?  I'm planning on a series of flights to profile HY-30 and HY-50 balloons ascent rate and burst altitude.   I'd be happy to pay for shipping.       Steve       -- This email has been checked for viruses by AVG antivirus software. www.avg.com

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Balloonatic crossing the UK

Nick McCloud <nick.at....@gmail.com>: Jan 26 02:48AM -0800 On Friday, 23 January 2026 at 15:49:00 UTC Ben Z en de rest wrote:   DIY TBtracker on ESP32-s2 pico, ATGM336h, BMP280 sensor and 3 x Energizer AA which should run for 72 hours from launch start.     Nice. Is the dipole for the LoRa module - if so, how did you tune it?

PE2BZ <hoofdei...@gmail.com>: Jan 26 04:51AM -0800 Hi Nick, the dipole is for the GPS module. Usually an 1/4 wave dipole does the trick but sometimes I want to keep the GPS antenna a bit more away from the tx antenna and that moment I choose for 47 mm wire dipoles and 47 mm lenth twisted to the gnd and antenna connectors.   The TX antenna itself was 71.37 divided by 433.775 MHz , or 16,5 cm. I have one tracker ready where I used the same twist and dipole for the TX antenna too but that one is supposed to travel on solar energy, and I have to find the mounting point to keep that antenne vertical.       On Monday, January 26, 2026 at 11:48:42 AM UTC+1 Nick McCloud wrote:

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[Steve]

Thanks for the offer Pietro - lets hold off on that for the moment - it looks like I have a few coming from a little closer (the Netherlands - thanks guys!).

I notice on Sondehub that the ones landing near me seem to get recovered pretty quickly - guess I gotta track down the guys collecting them.  

    Steve G8KHW

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