USB-SA44B — 4.4 GHz Spectrum Analyzer | Signal Hound
NetAlly NXT Portable Spectrum Analyzer, USB based 2.4GHz 5.0GHz (NXT-1000)
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RSA306B USB Real Time RF Spectrum Analyzer | Tektronix
Tektronix RSA603A 3.0 GHz/40 MHz USB Real Time Spectrum Analyzer
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Saelig Introduces Range of USB Mini Spectrum Analyzers - In Compliance Magazine
USB Spectrum Analyzer RF Power Meter Signal Generator Tracking Source 35-4400MHz | eBay
Spectrum Analyzer Board, High Accuracy Signal Source Module, 35‑4400M USB Network Signal Analysis with Tracking Source: Amazon.com: Industrial & Scientific
Triarchy TSA4G1 USB Mini Spectrum Analyzer | TEquipment