Z mesta Opole (voj. Opolskie) vzlietne 6. decembra 2025 stratosférický balón, ktorý vynesie technické vybavenie až do výšky viac než 30 000 metrov. Balón ponesie niekoľko rôznych vysielačov, takže na svoje si prídu nadšenci telemetrie, APRS, SSTV aj prijímania živých obrázkov zo stratosféry. Start: December 6, 2025 at 09:00 UTC (10:00 local time)
You will read in the article
What will the balloon broadcast?
Standard telemetry
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4FSK – 437.600 MHz (SP6MPL)
Main telemetry channel with basic flight data. -
APRS – 432.500 MHz (SP6MPL-11)
A source of real-time position information, suitable for all common APRS stations.
Live photos from a height of 30 km
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Wenet V2 – 437.200 MHz
The most interesting part of the balloon - the Wenet system will send živé snímky vo vysokom rozlíšení priamo z letovej kapsuly.
SSTV transmission
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144.500 MHz (PD120)
Due to the wide availability of the VHF band, images in SSTV can be decoded even by radio amateurs with simple equipment.
How to decode Wenet?
1. The easiest way – PC or smartphone
All you need is an ordinary SDR receiver and a website: https://wenet.sondehub.org
V záložke config you need to set the version Wenet V2, ktorú balón používa. Najlepšie funguje prehliadač Chrome.
Video tutorial
2. Raspberry Pi / Linux + SDR
The Horus project offers a complete tutorial with Docker: https://github.com/projecthorus/wenet/wiki/Wenet-RX-Instructions-(Linux-using-Docker)
A challenge for radio amateurs
The organizers ask everyone who will receive the signal from the balloon to send prijímací report na e-mail:
📧 sp6mpl@gmail.com
Please include in the message:
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svoj QTH locator,
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call sign or nickname.
We are looking forward to the participation of radio amateurs from all over Europe.
73 days SP6MPL!