Unmatched weather data accuracy
Skyfora has extensive experience in developing miniature electronic designs, weather sensors and instruments that challenge the status quo in the radiosonde and dropsonde industries.
Our StreamSondes provide industry-standard performance for traditional data and sensors, pressure, temperature, and humidity. Wind and turbulence data are more accurate due to the in-house developed dual-band GNSS receiver.
The StreamSondes include several features and complementary sensors that provide more scientific data for forecasting and research purposes.
WITH SKYFORA'S STREAM SONDES
Superior Data Quality
StreamSondes deliver comprehensive atmospheric profiling with pressure, temperature, humidity, and wind measurements. Enhanced with 3D motion sensors and dual-band GNSS for unprecedented turbulence and wind accuracy.
Reduced Operational Costs
Ultra-lightweight design at just 80 grams means lower deployment costs, extended flight range, and reduced environmental impact. No parachute needed thanks to optimized aerodynamics and slow 5m/s descent rate.
Environmentally Sustainable
Smallest environmental footprint in the radiosonde industry. Minimal weight, biodegradable materials, and parachute-free design make StreamSondes the sustainable choice for atmospheric research and forecasting.

Stream Sonde DS
Our ultralight dropsonde, StreamSonde DS, weighs only 80 grams. Thanks to its optimized aerodynamic shape, it descends as slowly as 5m/s at sea level, without the distraction of a parachute. The slow descent, prolonged measurement time, and lightweight design allow it to catch updrafts like no instrument before it, providing detailed information on winds and turbulence. This new and crucial data improves storm forecasting and research.
Ultra-lightweight sonde for atmospheric profiling from flight altitude to the surface.
A low terminal velocity of <5m/s provides prolonged descent times, offering unprecedented details of horizontal and vertical wind.
High-resolution data from sensors, including pressure, temperature, humidity, and wind, as well as complementary turbulence data from 3D motion sensors.
Prolonged transmission range of up to 1000 km/620 miles.
Swarm measurement capability encompassing 50+ simultaneous sondes.
StreamSonde 43
Advanced meteorological radiosonde with comprehensive sensor suite
Lightweight
80 grams
Terminal velocity
~ 5 m/s at sea level
Frequency
403MHz meteorological band
Operation time
2h with built-in battery
Integrated Sensors
StreamSonde 43 Benefits
More sensors
Additional data
Slow descent
Increased data
Slow descent
Accurate 3D winds
Skyfora data processing
Vertical winds included
Skyfora data processing
Access to Raw data
Skyfora data processing
Weather messages
Small size and mass
Saved environment
Ready to Revolutionize Your Atmospheric Data Collection?
Contact us to learn more about StreamSondes and how they can enhance your weather forecasting and research capabilities.