Ultra-Lightweight Sonde
A globally benchmarked lightweight architecture keeps the T-RS-300 under 30 g, minimizing payload and preserving balloon ascent performance from launch to burst.
Dual-Band GNSS Meteorological Radiosonde
Radiosonde T-RS-300: Dual-Band GNSS Weather Balloon Telemetry System
The Sertel Radiosonde T-RS-300 is a lightweight telemetry unit employed for weather balloon soundings in the upper atmosphere. It weighs under 30 grams and contains platinum sensors that measure temperature and humidity. A dual-band GNSS receiver, protected against jamming and spoofing, determines wind speed, wind direction, and altitude at heights from 30 to 40 kilometers. The device sends all data to a ground receiver within a 300-kilometer range. This enables meteorologists to gather a continuous profile of atmospheric conditions from launch until the balloon bursts.
Dual-Band GNSS with Anti-Jamming & Anti-Spoofing
Sub-30 g Ultra-Lightweight Design
Up to 300 km Ground Transmission Range
-95°C to +60°C Operating Range
Reliable Long-Range Telemetry
Sounding data reaches the ground station over a proven range of up to 300 km. Narrow-band transmission keeps more channels available within the meteorological frequency band, so performance stays dependable across every launch.
Key Features
Engineered for Reliable Atmospheric Sounding
Every design choice in the Radiosonde (T-RS-300), from its enclosure to its GNSS front end, is built to protect measurement accuracy through a fast, uncontrolled ascent.
Dual-Band GNSS Positioning
A high-performance dual-band GNSS receiver, tracking L1 and L5 including IRNSS, delivers precise positioning, improved tracking accuracy and reliable navigation throughout the flight.
Anti-Jamming & Anti-Spoofing Protection
Built-in AJ and AS technology keeps GNSS positioning resilient even in challenging RF environments, protecting the integrity of wind and altitude data.
Extended Atmospheric Profiling
The T-RS-300 profiles the atmosphere up to 30 to 40 km altitude and transmits sounding data over an RF range of up to 300 km for long-distance coverage.
Platinum Temperature & Humidity Sensing
High-precision temperature and humidity sensors, built on stable linear resistive platinum technology, deliver accurate, fast-responding atmospheric measurements with low solar radiation error.
EMI-Protected Flexible PCB
A flexible PCB with advanced EMI shielding and a specialized protective coating gives the T-RS-300 durability, electrical stability and long-term reliability under harsh flight conditions.
How a T-RS-300 Sounding Works
Every T-RS-300 flight follows the same reliable sequence, from ground preparation to received data.
01
Preflight Setup
Flight parameters are configured over USB or wireless, and the temperature and humidity sensors are checked before launch.
02
Balloon Ascent
The T-RS-300 climbs with the balloon, continuously sampling temperature and humidity through its full -95°C to +60°C operating range.
03
GNSS Wind & Altitude Calculation
The dual-band L1 + L5 GNSS receiver, using 72-channel DGPS wind finding, calculates wind speed, wind direction and altitude up to 30 to 40 km, protected by built-in anti-jamming and anti-spoofing.
04
RF Telemetry
Sounding data transmits over the 400 to 406 MHz GFSK/LoRa link to a ground receiver up to 300 km away.
05
Ground Reception
The ground station receives and logs the complete atmospheric profile, ready for forecasting and analysis.
Built for Consistent Field Performance
From preflight sensor checks through to GNSS lock, the T-RS-300 is designed to minimize manual intervention while maintaining measurement accuracy and data integrity across every sounding operation.
Applications
Where the T-RS-300 Radiosonde Is Used
The T-RS-300 supports the full range of upper-air sounding work, from routine forecasting to time-critical disaster response.
Upper-Air Sounding
Weather Forecasting
Aviation Support
Disaster Management
Research & Education
Atmospheric Science
- Ultra-Lightweight Payload
- Sub-30 g
- Ground Transmission Range
- Up to 300 km
- Profiling Altitude
- 30 to 40 km
Technical Specifications
Sensor Specifications
| Parameter | Specification |
|---|---|
| Temperature Range | -95°C to +60°C |
| Temperature Resolution | 0.01°C |
| Temperature Accuracy | ±0.2°C or better |
| Humidity Range | 0 to 100% RH |
| Humidity Resolution | 0.1% RH |
| Humidity Accuracy | ±2% RH or better |
| Pressure Range | 1100 hPa to 1 hPa |
| Pressure Resolution | 0.01 hPa |
| Pressure Accuracy | 0.5 hPa from MSL to 100 hPa; 0.1 hPa below 100 hPa to 1 hPa |
| Pressure Sensor | Available on request* |
FAQ
Frequently Asked Questions
Ready to Equip Your Sounding Operations?
Talk to a Sertel engineer for T-RS-300 pricing, configuration options and a sounding setup tailored to your site.