We are excited to announce the release of VU GPSDR, a GPS Assisted Software Defined Radio (SDR) designed as an expansion board for the Vivid Unit and Vivid Unit Extender.
VU GPSDR combines the power of the RTL2832U and R860 tuner with a high-precision 24 MHz PPS clock generated by the onboard NEO-M8N GPS module. The result is a compact and precise SDR solution that benefits from GPS synchronization — improving frequency stability and accuracy in various SDR applications. The onboard up-converter allows reception of signals below 30 MHz.
When used together with Vivid Unit and Vivid Unit Extender, VU GPSDR turns into a full-featured, portable SDR system with touchscreen. The dedicated software GPSDR++ offers a smooth interface optimized for the Vivid Unit, supporting features such as:
- Software Defined Radio with waterfall view
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ADS-B reception with aircraft list and integrated OpenStreetMap visualization
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Configurable clock output via SMA connector
Specifications
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Tuner: Rafael Micro R860
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ADC: Realtek RTL2832U
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GPS Module: u-blox NEO-M8N
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Frequency Range: 500 kHz – 1.766 GHz
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Bandwidth: up to 3.2 MHz (2.4 MHz recommended for stability)
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HF Upconversion: 108 MHz LO for signals below 30 MHz
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Local Oscillator: Si5351, driven by 24 MHz PPS from GPS
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Input Connector: 1 × SMA (SDR antenna input)
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Output Connector: 1 × SMA (software-adjustable clock output)
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Bias Tee: No Bias-Tee on SDR antenna input; 5 V Bias-Tee on GPS antenna (IPEX 1st gen) connector
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Transmit Capability: None
VU GPSDR is ideal for radio enthusiasts, developers, and anyone interested in exploring SDR technology on a compact, integrated hardware platform.
For more details and assembly instructions, visit the product page.
Price and Availability
VU GPSDR is available for order starting today in our e-shop.
The retail price is €65 exclusive tax.
Please notice that you will also need Vivid Unit and Vivid Unit Extender to assemble a usable device.