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Radiometrix’s TX3B-869.85-64 and RX3A-869-10 radio modules are being used by the engineering department of Durham University to monitor the performance of its solar-powered racer.

The Durham University Solar Car (DUSC) has a steel space frame construction with a carbon-fibre body shell, which makes it very light and ensures that energy is not expended unnecessarily.

The high-efficiency photovoltaic cells that cover its outer surface are able to produce 1.4kW of power, allowing the vehicle to reach a maximum speed of 56mph.

The Radiometrix products being utilised in the DUSC’s telemetry system allow the transfer of important information to the chase vehicle that follows behind it.

The team engineers can thus gain access to a continuous stream of real-time data on the voltages/currents passing through the DUSC’s circuitry and on how much solar energy is being received.

The Radiometrix TX3B-869.85-64 transmitter located in DUSC has a 32 x 12.5 x 3.8mm form factor.

It can deliver a 7dBm (5mW) RF output and supports 64kbps data rates.

This is complemented by the RX3A-869-10 receiver, which is placed in the chase vehicle.

When paired with the TX3B, the RX3G receiver allows a reliable data link to be implemented up to a range of 300m.

Both the transmitter and the RX3G receiver comply with the ETSI EN 300 220 and EN 301 489-3 standards.

These modules are suitable for a variety of different end applications, include vehicle data upload/download, data logging, asset tracking/management systems, industrial telemetry/telecommand systems and high-performance security/fire alarms.

Pioneers of Low Power Radio – Since 1985

Based in the UK, Radiometrix is recognised as the leading global developer of ISM Band/ SRD FM low power radio modules.

We design and manufacture high-quality and cost-effective VHF and UHF radio modules that cater for the wireless needs of OEMs worldwide. Available on all major frequencies (151, 169, 173, 433, 458, 868 & 914 MHz), we offer a wide variety of modules to suit a diverse range of licence-exempt and licenced applications. The off-the-shelf modules can be customised to meet specific requirements.

Product portfolio

  • 12.5kHz, 25kHz Narrow Band & Wide Band FM
  • Transmitters, Receivers, Transceivers & RF Modems
  • Single-channel and Multi-Channel operation
  • 151, 169, 173, 433, 458, 868 & 914 MHz
  • UHF & VHF ISM bands
  • FCC Part 90 Compliant, FCC Part 15 compliant
  • Class 1 performance
  • Encoders & Decoders for RF remote control
  • Radio Packet Modems
  • Radio Packet Controllers
  • Evaluation Kits
  • Accessories – Antennas & Connectors


    Why Radiometrix?

    • Products designed and manufactured to the highest standards
    • Superior RF Performance, low power requirements
    • Radiometrix products are designed and verified to fully comply with FCC/ETSI or regional radio standards.RoHS Compliant
    • RoHS Compliant radio modules (lead-free)
    • Comprehensive portfolio of products
    • We test every single module


    • In-house technical support prior to, during and after sales
    • Custom design – in-house R&D and design
    • Long term availability of our products
    • Highly competitive volume pricing – contact Sales for quotations
    • Reduced time-to-market
    • Flexibility – we will do our very best to find a solution that meets your requirements

    Expertise – Low Power Radio is what we do

    • Over 25 years experience specialising in low power radio
    • Reputation for technical excellence
    • Team of leading RF industry engineers 

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