Upper Air Radiosondes RS41 and RS41 E-models

In today’s world, meteorological agencies face significant hybrid and cyber threats, such as GPS interference and cyberattacks, which can lead to inaccurate weather forecasts. Vaisala addresses these challenges by enhancing operational efficiency, ensuring data accuracy, and maintaining trustworthiness.

Multi-GNSS technology in Vaisala’s standard RS41 radiosonde models  uses data from multiple navigation satellites, increasing resilience against GPS interference by 60% on average* and securing accurate weather forecasts in challenging environments.

Our industry-first message authentication ensures that radiosonde messages remain unaltered during transit to provide reliable weather data. Upgrade to Vaisala Cirrus Sounding System MW51 to unlock these advancements. 

* Based on Vaisala test soundings in Finland during 2024 comparing the radiosonde RS41 models with and without multi-GNSS.

Vaisala Radiosonde RS41 E-models combine high-quality atmospheric sounding data with innovative, biodegradable materials to help reduce plastic waste originating from sounding operations.

RS41 E-models are an industry first in biodegradable materials: All models include BioCover™, our patent-pending plastic-free and biodegradable radiosonde cover and insulation, and BioTwine™, our plastic-free and biodegradable unwinder twine. These new materials represent an overall reduction of 66% in plastics in the product.  

Tailored to the needs of meteorological organizations, RS41 E-models can replace standard RS41 radiosondes in operational use, with the same uncompromising performance and accuracy.

Model Comparison

RS41-SGE

• Biodegradable and plastic-free BioCover™ and BioTwine™
• Excellent for synoptic soundings 
• Temperature and humidity sensors 
• GPS height, pressure and wind data 
• Automated ground checks 
• Standards-compliant, stable narrow band transmission 

RS41-SGPE  

• Biodegradable and plastic-free BioCover™ and BioTwine™ 
• Excellent for sensor based pressure needs 
• Temperature and humidity sensors 
• GPS wind direction and speed 
• Automated ground checks 

Our line of radiosondes offers different measurement parameters, sensor technology, and transmission methods to suit your particular application.

Radiosonde RS41-SG

• Excellent for synoptic soundings
• Temperature and humidity sensors
• GPS height, pressure, and wind data
• Automated ground checks
• Standards-compliant, stable narrow band transmission

Radiosonde RS41-SGP

• Excellent for sensor-based pressure needs
• Temperature and humidity sensors
• GPS wind direction and speed
• Automated ground checks
• Standards-compliant, stable narrow band transmission

Radiosonde RS41-SGM

• Improved security thanks to radio silence and encryption
• Superior PTU measurement performance
• Automated ground check
• Robust and easy to use design
• GPS for continuous wind data availability and height and pressure calculation
• Stable narrow band transmission that complies with ETSI standard EN 302 054