Z mesta Opole (voj. Opolskie) vzlietne 6. decembra 2025 stratosférický balón, ktorý vynesie technické vybavenie až do výšky viac než 30 000 metrov. The balloon will carry several different transmitters, so telemetry enthusiasts will find their APRS, SSTV aj prijímania živých obrázkov zo stratosféry. Štart: 6. december 2025 o 09:00 UTC (10:00 miestneho času)
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 treba nastaviť verziu Wenet V2, which the balloon uses. Chrome works best.
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!