Android SDR with Spectrum Analyzer and Waterfall display
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RTL-SDR as a $20 Spectrum Analyzer - YouTube
Low cost spectrum analyser/ scanner with AirSpy and RTLSDR
RTL-SDR As a Spectrum Analyzer
SATSAGEN Spectrum Analyzer Software Updated: Now Supports RTL-SDR
RF Viewer — Low-Cost, Wireless USB Dongle, RF Spectrum Analyzer
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RTL-SDR Wide Spectrum Analyzer
RSP Spectrum Analyser Software for SDRPlay SDR Receivers - YouTube
Spektrum SV Mod: RTL-SDR Spectrum Analyzer Software Now with Improved UI
Using the Airspy as a low cost Spectrum Analyzer with Spectrum Spy
Getting Started With Software Defined Radio (SDR) - Make:
Why use – Fosphor, a GNU Radio real-time spectrum analyzer? | Arik Yavilevich's blog