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Amazon.com: Multi-Application Raspberry PI Motherboard with 0.5PPM TCXO RTL- SDR for Raspberry Pi B+ / Pi 2 / Pi 3, Receives ADS-B & FM+DAB/DVB-T Signals : Electronics
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CaribouLite RPi HAT open-source SDR Raspberry Pi HAT tunes up to 6 GHz (Crowdfunding) - CNX Software
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