The new ready to use light-weight Radiosonde


Radiosonde DFM-17

  • Multi GNSS Radiosonde (GPS, GLONASS, BEIDOU)
  • Highly stable transmitter
  • Low weight, small size
  • Simplified handling for daily ascents
  • Near Field Communication (NFC) for wireless ground check
  • XDATA Interface
  • Status LED‘s for clear status indication
  • Optional barometric pressure sensor


Our new little one – ready for ascent

The state-of-the-art DFM-17 is our latest Radiosonde and currently one of the lightest and smallest radiosondes on the market. It was designed for precise and reliable measurement of temperature, humidity, air pressure, wind direction and wind speed. It is easy to use, simplifies the preparation before the ascent and thus, making it the ideal instrument for daily sounding.

Technical data

Weight63 g, ready to start
Size90 x 67 x 44 mm
Power supplyDry Lithium battery, activation via push button
Runtime integrated battery pack> 180 min.
Transmission-rateOne full data set per second
Bandwidth< 20 kHz
Frequency range400 … 406 MHz
Frequency deviation+/- 0.1 kHz
Output power telemetry100 mW, typical
Error correction telemetryCode-spreading, interleaving
Temperature resolution0.1 °C
Temperature random error< 0.2 °C
Humidity resolution1 % rH
Humidity random error< 4 % rH
Pressure accuracy< 0.3 hPa
Geopotential height accuracy< 10 m
Wind speed accuracy< 0.2 m/s
Accuracy horizontal position< 5 m
The first few metres of ascent pose the most risk for the radiosonde in the event of strong winds. Secure your ascent with one of our Unwinders. For more information click here.
Balloon Filling Units
We offer balloon filling units in different designs for filling balloons with helium or hydrogen and for varied balloon sizes. For more information click here.
Our high quality balloons are available in different sizes and ensure that your radiosonde reaches the desired height. For more information ask our sales team.