Easy optical sun alignment, with +1.3dB of RF sun noise - that'll do!

Tomorrow's UK contact will be streamed live at live.ariss.org. It will use HamTV video from the ISS to provide a crew view of the contact. Watch that at live.ariss.org/hamtv. HamTV is transmitted from the ISS on 2.395 GHz. It's a DATV signal using DVB-S modulation.

Event live stream will be on live.ariss.org

Last week with the support of @goonhilly.org the UK ARISS team assembled and installed a new HamTV ground station to Cornwall to provide downlink for the School Contact at the Simon Langton Grammar School this coming Monday. This afternoon it provided first AoS of the HDMI Camera test!

CCSDS Outreach Initiative and Competition for future cislunar amateur radio payload. ESA, in partnership with Goonhilly Earth Station, CCSDS, AMSAT-UK, and AMSAT-DL, are launching a competition to develop high-quality reference implementations of selected CCSDS protocols amsat-dl.org/en/ccsds-out...

Saturday's contact with 1st Radford Semele Scout Group in the UK will attempt to capture a live HamTV transmissions from the ISS. Check the graphic for more info and visit the BATC forum or ARISS Discord for more HamTV discussion. forum.batc.org.uk/viewforum.ph... discord.gg/JrmXw58U8T

💥Greater (partial) success for #amateurradio and #amsat satellite operators in dispute with AST Spacemobile over commercial use of the 430-440 MHz amateur radio band for TT&C! 💥 In its reference Attachment to the recent grant, dated August 29, 2025, the FCC imposes clear limits ⬇️

ARISS is looking for hams worldwide who are interested in establishing HamTV ground stations. An organizational meeting will be held this Thursday at 19:00 UTC (3 PM ET) to discuss. Respond to the email address in the graphic (and image alt text) to request the meeting invite.

No, UK Government is not scrapping its space programmes. There’s been some confusion and bungled communications over the musical chairs in civil space policy and the UK Space Agency this week. It all matters less than the chronic lack of focus and leadership from UK Government for 15 years. 👇👇👇

Reminder of the HamTV outage THIS week.

What's that CubeSat Satellite stuff anyhow? has been released on media.ccc.de and YouTube #why2025 #Thesquarehole #Brachium #why2025eng https://media.ccc.de/v/why2025-94-what-s-that-cubesat-satellite-stuff-anyhow https://www.youtube.com/watch?v=BTR3y1KdkG0

HamTV testers, the transmissions will go off-line for the first part of the upcoming week. See the graphic for timing. No timing for a full video test yet, you know we'll share as soon as we know.

Let's start the week with some HamTV updates - we compiled the FAQ in the graphic with our experts. If you'd like to get involved in the HamTV discussion, join the ARISS Discord. Link below.

HamTV Acquisition of Signal (AOS) reports! Thanks to several European hams for confirming the HamTV carrier transmissions earlier today. Several North American passes upcoming, so we'll watch for those reports too.

Scheduling update: Work on the station will occur later in the day Tuesday. Now planned from 14:05 to 16:05 UTC (10:05 AM to 12:05 PM ET).

GNU Radio is looking for a contractor to either port the existing Qt based GNU Radio Companion application to the web (running proof of concept exists), or to develop a new frontend capable of creating flowgraphs, executing the resulting program, and displaying the UI in the web. Could that be you?

Another new set of receivers at the Goonhilly WebSDR site - this time for the motus.org Wildlife tracking project. A set of four (N,S,E,W) UHF yagis with RTL-SDRs on a Raspberry Pi will allow them to detect any tagged species migrating across the Lizard peninsula. Project info: youtu.be/3PudxFM_i_g

We are finally ready to announce that EMF 2026 will happen on July 16-19, 2026, at Eastnor Castle Deer Park, Herefordshire. Expect more updates soon as we start spinning up the organisation again.

It's always fun to use the large dishes for some less serious work, such as out-of-this-world birthday messages! www.intuitivemachines.com/post/ringo-s...

Huh? #FPGA plus #lasers?! A fancy #job indeed! www.linkedin.com/posts/drchri...

UPDATE: the complete report, in English, is out¹. __ ¹ archive.today/2kJ4i

Watching the EI1ISS ARISS contact on live.ariss.org , and listening on M0XGH AMSAT station at Goonhilly - great copy in Cornwall!

Fascinating visit to @goonhilly.org Thanks for all the work you do to keep us in contact with our satellites, deep space missions, and each other. #Cornwall

On the occasion of the @unesco.org International Day of Light, we created a 'light painting' using the Dwingeloo Telescope by mounting a light bulb at the focus for half an hour. #lightday2025 @idlofficial.bsky.social

The BATC & AMSAT-UK Goonhilly WebSDRs will shortly be offline for server hardware migration. There may be intermittent service during the migration process. I'll post an update here once completed.

Tune into the latest Space Boffins podcast to hear about the UK-led @esa.int space weather mission Vigil. 🛰️ Our Head of Space Weather, Mike Willis, talks about how Vigil will help us mitigate the damage space weather could cause to vital services. ☀️ 👉 www.thenakedscientists.com/podcasts/ast...

To get past 1,700 STEM contacts with the ISS for students, it takes someone on the inside at NASA. Our person on the inside for 20+ years has been Kenneth, N5VHO (and @RF2Space on X). We wish him nothing but the best in retirement when he departs later this year. 73 to N5VHO!

We are already streaming #IM-2 Intuitive Machines #Athena lander live signal in preparation for descent and landing via the Bochum 20m observatory on our YouTube link ▶️ www.youtube.com/watch?v=SkRS...

Sunset in Cornwall. Looking closely you can see that Goonhilly-6 is not quite pointed at the moon. Not yet.

Back in the blue skies of Cornwall to support some exciting customer passes over the next couple of days. #adlunam

An upcoming scheduled power outage at the Goonhilly WebSDR site means this'll be reset soon.. Leo Bodnar LeoNTP with solid GPS lock for 521 days, currently serves 1.5% of UK NTP pool requests - 125.5 billion good-times served since last reboot!

After a spectacular sunny day in Cornwall, it's a clear cold night to stare moon-wards in another lunar mission validation campaign.

Weekend adventures at new QTH with @davegkq

CQ JOTA de @GB2GP on QO-100 DATV, from Gilwell Park UK Scouting HQ. Currently with live green screen of the scouts this morning. Ping us on the WB chat if you're available for a QSO! You can also watch our transmissions on https://batc.org.uk/live/oscar100net

Live stream for AMSAT-UK Colloquium 2024 now live at https://www.youtube.com/watch?v=4ve4q43pdF0&list=PLTDI7lbh1cWpwM8zgO5CYJgRJlSPK4k8Z Streaming provided by @BATCOnline @AmsatUK #amsat

Standing by for @ARISS_Intl AOS at the Brooklands Museum. Live stream at http://live.ariss.org , contact starts 1229 BST approx.

Powering up data comms at New Park ready for New Forest Marathon with @SWHantsRAYNET

Final satellite test pass for today in preparation for the @ARISS_Intl School Contact with the ISS tomorrow. All looking good! Watch live at 1144 BST tomorrow at: http://live.ariss.org

Using the brief moments of sun today to sort out @ARISS_Intl HAMTV dish alignment. Now just need to work out what to do about that both-adjacent-channel RFI! (ignore Pluto DC spike at centre)

Ciaran M0XTD @m0xtd sharing his experience of early HamTV operations on the @astro_timpeake school contacts, at the 40th Anniversary @ARISS_Intl Conference in Florida. @AmsatUK @theRSGB

Early morning start at St. Peter-in-Thanet school. @ARISS_Intl contact with the ISS at 10:57 BST, streamed at http://live.ariss.org

There will be another short interruption to the Goonhilly WebSDR (HF, VHF, UHF, QO-100) and QO-100 Spectrum Monitor facilities this afternoon (Monday 4th September) to complete power renovation works in the building. @BATCOnline @AmsatUK @amsatdl

There will be a short interruption (< 2 hours) to the Goonhilly WebSDR (HF, VHF, UHF, QO-100) and QO-100 Spectrum Monitor facilities tomorrow morning (Tuesday 22nd August) for power works in the building. @amsatdl @BATCOnline #amsat

Thanks to Gerry G8NNT for this thermal image of my ARISS HamVideo receiver rack box, taken at the McMichael radio rally yesterday. Spot the minitiouner!

AMSAT-UK/BATC Goonhilly Es'hail-2 and Satellite WebSDRs will be offline for a few hours today due to Power Engineering works in the host building. We expect to be back online by 1700 BST. #amsat @AmsatUK @BATCOnline

FYI we have resolved the 2m-band RFI issue on the Goonhilly VHF WebSDR. Culprit seems to have been a misbehaving SMPSU that is cooperating after being remotely re-powered. https://vhf-goonhilly.batc.org.uk/ (end of a CAS-4B pass visible in pic) #amsat @AmsatUK

Feeling plenty of nostalgia from these old IQ recordings of the ISS HamTV downlink recorded during ARISS Principia in 2016. (I've started testing our latest generation of DATV receivers with the multi-groundstation TS-merger, to be ready for the repaired TX in orbit soon 🤞 !)

Goonhilly Amateur VHF/UHF WebSDR is back up and running with new server hardware. https://vhf-goonhilly.batc.org.uk 2m+70cm satellite turnstiles, 23cm+13cm yagis pointing SSW for tropo monitoring. #amsat @AmsatUK @UKGHZ

Foggy and chilly morning at @UKtrailrunning2 with @SWHantsRAYNET running VHF communications. We're due warm sun when it comes up!