Simple Spectrum Analyzer with Antenna USB Cable A Type 2.4G Frequency Handheld Mini 0.96inch LCD Screen Signal Measurement: Amazon.com: Industrial & Scientific
USB-SA44B — 4.4 GHz Spectrum Analyzer | Signal Hound
2.4GHz Portable Spectrum Analyzer USB Dongle
Simple Spectrum Analyzer with Antenna USB Cable A Type 2.4G Frequency Handheld Mini 0.96inch LCD Screen Signal Measurement: Amazon.com: Industrial & Scientific