Simple Spectrum Analyzer with Antenna USB Cable A Type 2.4G Frequency Handheld Mini 0.96inch LCD Screen Measurement: Amazon.com: Industrial & Scientific
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RSA306B - Tektronix - USB Real Time Spectrum Analyzer, 9 kHz - 6.2 GHz, 40 MHz Acquisition Bandwidth
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Triarchy TSA6G1 USB Mini Spectrum Analyzer | TEquipment
4.4 GHz Spectrum Analyzer and Measuring Receiver Only € 1.245 (ex.VAT)
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Triarchy Technologies
Compact 6 GHz USB RF vector spectrum analyzer from Saelig
Spectrum Analyzer Board, High Accuracy Signal Source Module, 35‑4400M USB Network Signal Analysis with Tracking Source: Amazon.com: Industrial & Scientific
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Rent or Buy Tektronix RSA306 USB Spectrum Analyzer, 9 kHz - 6.2 GHz