gnuradio - How to make a software defined radio using USRP and GRC - Amateur Radio Stack Exchange
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DIY RTL SDR: Building a 100kHz-1.7GHz Software Defined Radio - OE6FTE amateur radio blog
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Software-defined Radio | Hackaday
Software-defined radio - Wikipedia
How to add an SDR pan-adapter to your transceiver - Amateur radio tips and how-to guides
A Software Defined Radio Tutorial: Receiving the ISS and Hams with an RTL- SDR | Toptal
PA3FWM's software defined radio page
Progress On My Software-Defined Radio
PA3FWM's software defined radio page
Software Defined Radio with Android Smartphones
PA3FWM's software defined radio page
Great Scott Gadgets HackRF One - Software Defined Radio : ID 3583 : $339.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Software Defined Radio Gets Physical Control | Hackaday
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A Vacuum Tube Based Shortwave Software Defined Radio