Scanning span: 7M (10KHz), 35M (50KHz), 70M (100KHz), 140M (200KHz), 350M (500KHz). 1 Handheld Simple Spectrum Analyzer. Spectrum display range is 35M-4400MHz. Spectrum display range: 35M-4400MHz. This product uses the local oscillator signal and the external test signal to obtain the difference frequency signal, and calculates the amplitude of the external test signal through the detector.
eBay