Introducing RR2: A Smarter, Wireless Receiver for Windsond Soundings

Executive Summary

Sparv Embedded proudly presents the RR2 receiver—an advanced, weatherproof upgrade to the original RR1. Designed for Windsond radiosondes and Sparvio sensor systems, RR2 streamlines atmospheric soundings with wireless Bluetooth connectivity, USB support, and Android compatibility. Its rugged IP65-rated enclosure and internal battery make it ideal for fieldwork in challenging environments, including education, research, and UAV-based deployments. RR2 simplifies sonde recovery with real-time mapping and compass guidance, even when operating off-road. Built-in GPS and barometric sensors automate initialization and tracking, while optional interfaces like Ethernet and M2M protocols offer customization for specialized applications. Whether you're launching sondes from a classroom or a remote site, RR2 delivers reliable performance, intuitive controls, and flexible integration.

Key Learnings

• RR2 supports both USB and Bluetooth for wired or wireless operation.
• Weatherproof IP65 design enables use in rain, snow, and rugged terrain.
• Android tablet software provides live maps and compass for sonde recovery.
• Built-in GPS and barometer automate sonde tracking and initialization.
• Internal battery allows fully wireless use in the field.
• Optional interfaces include Ethernet, wireless network, and UART/I²C for custom setups.

A Major Upgrade from RR1

The RR2 receiver builds on the foundation of RR1 with significant improvements in connectivity, usability, and durability. While RR1 relied solely on USB and lacked mobile support, RR2 introduces:

• Bluetooth connectivity for wireless operation
• Android compatibility for tablet-based control
• MicroSD data caching for secure logging
• Internal battery for untethered field use
• Weatherproof housing for all-weather deployments

These upgrades make RR2 a versatile tool for both professional and educational environments.

Wireless Soundings Made Simple

RR2’s Bluetooth feature allows operators to control the ground station without cables, making it easier to conduct soundings in open fields, classrooms, or mobile setups. The receiver pairs seamlessly with Android tablets running Windsond software, which displays:

• A live map of the sonde’s location
• A compass needle pointing toward the sonde
• Real-time telemetry and signal strength

This interface eliminates the need to manually enter landing coordinates and simplifies off-road recovery.

Built-In Sensors for Smarter Tracking

RR2 includes a barometer and GPS module, which:

• Automatically log sonde initialization values
• Track bearing and distance to sondes
• Maintain accurate positioning even if the ground station moves during flight

These features reduce setup time and improve data reliability, especially in dynamic or mobile deployments.

Technical Comparison: RR1 vs RR2

Customization Options

RR2 is designed with flexibility in mind. Users can enable optional interfaces for advanced integration:

• Ethernet for wired network connectivity
• Wireless network for remote access
• M2M interface over UART or I²C for machine-to-machine communication

These options make RR2 suitable for research institutions, industrial monitoring, and custom UAV platforms.

Conclusion

The RR2 receiver represents a leap forward in mobile atmospheric sensing. With wireless operation, rugged design, and smart tracking features, it empowers users to conduct soundings with greater ease, accuracy, and adaptability. Whether you're launching sondes in a classroom or chasing storms in the field, RR2 is built to support your mission.

Sources:

• Sparv RR2 Receiver Flyer (PDF)
• RR2 User Manual v1.1
• Windsond Manual v2.1

About the author

Anders Petersson

Chief Executive Officer & Founder

Anders is the CEO and CTO, coordinating the company's general direction and engineering. He often discusses user requirements and how to accomplish them.