From the city Opole (voj. Opolskie) will take off on December 6, 2025 stratospheric balloon, which will carry the technical equipment up to a height more than 30,000 meters. The balloon will carry several different transmitters, so telemetry enthusiasts will find their APRS, SSTV also receiving live images from the stratosphere. 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 live images in high resolution directly from the flight capsule.
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
In the tab config you need to set the version 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 acceptance report to e-mail:
📧 sp6mpl@gmail.com
Please include in the message:
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own 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!