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Book Now for AMSAT-UK Colloquium and Gala Dinner 2025

Kents Hill Park Conference Centre Milton Keynes MK7 6BZDid you know AMSAT-UK turns 50 in 2025!

The annual AMSAT-UK colloquium is fast approaching. Once again, it is being held at The Kent’s Hill Conference Centre in Milton Keynes alongside the RSGB Convention on Saturday 11th and Sunday 12th October 2025.

If you would like to attend the event, we have arranged a special discounted rate for overnight accommodation at the Delta by Marriott hotel which is 5 minutes drive from the conference centre. Cost is £89 for bed and breakfast for single occupancy or £99 for double occupancy.

Booking at this rate can be carried out at https://www.marriott.com/event-reservations/reservation-link.mi?id=1752854002411&key=GRP&app=resvlink

This price is a limited time offer, after which rates will return to their standard level.

On the evening of Saturday 11th October, AMSAT-UK are holding a Gala Dinner at the hotel. This is a 3 course meal + tea / coffee which is £39.00 per person.

Full details, including menu choices, are available at the AMSAT-UK shop at https://shop.amsat-uk.org/product/amsat-uk-gala-dinner-2025

There are a limited number of available places remaining for the Gala dinner and registration for it closes on Wednesday 24th September at 1800 UTC so be sure to book your place to avoid disappointment.

Please note that you will be required to book a weekend ticket from the RSGB for attendance. Please see the RSGB booking website at https://www.tickettailor.com/events/radiosocietyofgreatbritain/1735267

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RSGB LoRa Repeater Balloon Launch September 20

RSGB LoRa High-Altitude Balloon Repeater GB1HABThe launch of the RSGB High-altitude balloon carrying the LoRa Repeater GB1HAB will take place around 11am BST (10:00 GMT) on Saturday, September 20.

As part of the RSGB’s National Coding Week activities this year, the RSGB Outreach Team has been working closely with Hi-Impact to launch a hot air balloon equipped with a LoRa digipeater.

The LoRa Repeater uses Spreading Factor (SF) 12, and Coding Rate (CR) 5 with a bandwidth of 125 kHz. The frequencies are:
Uplink 439.850 MHz use no more than 200 mW EIRP
Downlink 433.850 MHz

Further information at https://rsgb.org/main/coding-and-amateur-radio/lora-balloon-project/

Watch the launch on YouTube from 10am BST (09:00 GMT) https://www.youtube.com/watch?v=iGIYx5oamkE

Real-time tracking of amateur high-altitude balloons https://amateur.sondehub.org/

Follow Mark Harper MW1MDH on X https://x.com/HiImpactMarkH

Follow Hi-Impact Tech on X https://x.com/hiimpacttech

Follow AMSAT-UK on X https://x.com/AmsatUK

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CubeSats to Deploy from ISS on September 19

JAXA Deployment J-SSOD#32JAXA, the Japan Aerospace Exploration Agency, has announced that five Japanese CubeSats will be deployed from the International Space Station (ISS) on September 19 at 08:25-09:00 GMT (09:25-10:00 BST, 17:25-18:00 JST) (though the date and time of the deployment are subject to change due to the ISS schedule modification). The deployment event for those satellites will be broadcast via YouTube JAXA Channel. Four of the CubeSats, carrying scientific and educational payloads, will operate in the amateur bands, and radio amateurs around the world are invited to participate in the projects:

Raspberry Pi High School CubeSat GHS-01

Raspberry Pi High School CubeSat GHS-01

GHS-01 is a 2U size CubeSat equipped with a camera for photographing the earth, a sensor for checking the state of the satellite, and an attitude control device. In response to commands from the ground station, the satellite-mounted camera photographs the earth from space and transmits the image data to the ground. In order for amateur radio users around the world to voluntarily acquire image data taken by this satellite by radio, the date and time of image transmission will be published on the website https://gifuhs2022.wordpress.com/. Also, the satellite carries a digitalker mission. Audio data is transmitted from a ground station and stored in the satellite. The voice data is transmitted from the satellite as an analog FM voice signal, and a message is broadcast from space. The date and time the message will be sent will be published on the website. The satellite was built by Gifu University with technical cooperation for using satellite radio waves with sister schools of universities and high schools such as Lithuania, Australia, Kenya, South Korea, and Taiwan. A downlink on 437.090 MHz has been coordinated with 20 wpm CW, 1k2 AFSK, 9k6 GMSK and digitalker voice.

DRAGONFLY, coordinated by Kyushu Institute of Technology, is part of the Joint Global Multi-Nation Birds Satellite project, BIRDS-X, and funded by Amateur Radio Digital Communications in the U.S. The 2U CubeSat will carry APRS digipeaters on 145.825 MHz, as well as a Store and Forward messaging system. In addition to the VHF APRS frequency, a UHF downlink for CW beacon and telemetry using 4k8 GMSK will transmit at 437.375 MHz. A ground terminal competition will be held on DRAGONFLY. More information is available at https://birds-x.birds-project.com/

STARS-Me2, a 1U CubeSat built by Shizuoka University features an earth observation camera, but the real experimentation takes place on the AX.25 radio downlinks on which those photos are transmitted back to earth. Reception success rates at receiving ground stations will be measured at baud rates of 1.2kbps, 9.6kbps and 115.2kbps. The coding gain of the error correction scheme will be measured on the downlinks. And the reception performance with polarization diversity at multiple terrestrial receiver stations (developed by amateur radio operators) will be evaluated. The goal is to learn more about how large data sets, such as images, are best transmitted from space. UHF downlinks with CW, 1k2 AFSK, 9k6 FSK and 115.2 bps GMSK are coordinated for 437.350 MHz, 437.400 MHz and 437.200 MHz.

RSP-03 is also a 1U CubeSat carrying a camera, but in this case the camera will not be aimed at earth, but at the stars. The main mission is to capture the star data by camera, convert it to “audible data,” and deliver the audio to the ground as a “Stellar Symphony.” After acquiring data of stars and constellations captured by the onboard camera an on-board AI will compose sounds from the star data and transmit it to the ground via an FM Digi-talker. In addition, digital data will be sent using various baud rates and modulation modes, and a digital “QSL card,” stored on the satellite before launch will be transmitted via SSTV after amateurs have uploaded their callsigns from the ground. A downlink at 437.050 MHz will be shared by the FM Digi-talker, 1200 BPS (AFSK on FM), 9600 BPS (GMSK), and 24000 BPS (4FSK, OQPSK). Details are at https://rsp03.rymansat.com/en.

IARU Satellite Frequency Coordination https://iaru.amsat-uk.org/

JAXA Deployment News https://humans-in-space.jaxa.jp/en/biz-lab/news/detail/004949.html

Follow JAXA Kibo on X https://x.com/JAXA_Kiboriyo

Follow AMSAT-UK on X at https://x.com/AmsatUK

[Thanks to ANS, Masa Arai, JN1GKZ, IARU, and JAXA for the above information.]

 

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ISS Contact with IARU Region 1 YOTA Camp

YOTA ISS ContactUpcoming ARISS radio contact between the International Space Station, call sign OR4ISS, and young people at the IARU Region 1 Camp, call sign FX5YOTA, on Tuesday, August 19, 2025, at 09:18:53 UTC (10:18 AM BST) on 145.800 MHz FM.
Astronaut Mike Fincke KE5AIT will operate the amateur radio station call sign OR4ISS aboard the ISS and will call the radio amateur ground station call sign FX5YOTA in France. This is a live ARISS radio contact from the Youngsters On The Air – Summer Camp in Jambville, France.
The YOTA Summer Camp is a chance of a lifetime for these young RSGB members to represent their country and their national society:
• Leon, 2E0VUF (UK Team Leader)
• Emily, M7HPU
• Sophie, M7IJG
• Sam, M0UEL
https://rsgb.org/main/about-us/yota/yota-summer-camps/yota-paris-2025/
You can listen live to astronaut Mike Fincke aboard the ISS on 145.800 MHz (plus/minus 3 kHz Doppler shift).
Many FM rigs can be switched been wide and narrow deviation FM filters. For best results you should select the filter for wider deviation FM. Handhelds generally have a single wide filter fitted as standard.
The event will be streamed live:
English is the expected language of communication in this amateur radio contact.
Questions (as time allows):
1. What types of emergencies do you train for on ISS?
2. What’s the biggest question/curiosity you had about life before becoming an astronaut?
3. What was the most unexpected thing that happened to you in space?
4. What is the funniest thing to do in space?
5. How are crew and equipment on the ISS protected from solar radiation?
6. What were your first thoughts after seeing the Earth from above?
7. Can you describe how the ISS sounds like inside?
8. How does your body feel when you come back to Earth after being in space?
9. Was there an experiment where you had to improvise something?
10. How often do you get on the radio to make QSOs with HAMs?
11. Is amateur radio important for the ISS?
12. Back on Earth, how often are you active on the air and what’s your favorite band/mode?
13. How do you cope with being away from family for a long period of time?
14. What’s the first thing you would do back on Earth?
15. Can you describe your first ham radio contact from the ISS?
16. Will humanity be able to live on another planet/moon in the upcoming decades?
17. In your opinion, what skills are essential in becoming an astronaut?
18. Have you operated in Morse code as part of your amateur radio or other communication activities?
19. Does the time passed in space feel any longer or shorter than on Earth?
20. Is oxygen depletion highly affected by the growth of plants/micro-organisms on board?
The ARISS program is aimed at students and enthusiasts and aims to inspire them in the study of sciences with this amateur radio activity. The demonstration of amateur radio communication from space invites schools and universities to make use of these educational technical resources. We invite radio amateurs and space enthusiasts to tune in to this exciting moment.
Check out the ARISS website and follow ARISS on the official social media channels for more updates.
ARISS-Europe News Bulletins are distributed by AMSAT Belgium.
We can only maintain this service with your donation.

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Jovian-1 U/V FM Transponder Test

 

2025-07-24 Jovian-1 U/V FM Transpnder

Jovian-1 U/V FM Transponder

David Bowman G0MRF reports the successful on-air test of the AMSAT-UK U/V FM transponder has been carried out.

Jovian-1 U/V FM transponder test siteDestined for the 6U Jovian-1 satellite, this mode U/V FM transponder had its first on-air test on Thursday, July 24, 2025.

A 70cm 20 watts ERP signal was transmitted over a distance of 59 km with a path loss of -150 dB and received by the FM transponder on a QFH antenna. The signal was re-transmitted on 145.895 MHz.

The first contact was between Mike Willis G0MJW and Graham Shirville G3VZV

AMSAT-UK Jovian-1 Announcement September 2024
https://amsat-uk.org/2024/09/29/amsat-uk-new-project-announcement-2/

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