Fangrui Product Details Displayed Frequency Range 35-4400mhz Measurement Frequency Range 45-4400mhz Dynamic Range 75db In 45-3000mhz Band 70 Db For 3000-4400 Mhz Band Maximum Bandwidth 4355 Mhz If Bandwidth (fixed) 200 Khz Sweep Speed Over 100 Mhz 600 Mhz/s Sweep Time Less Than 0.25 Seconds For 100 Mhz Span Detectable Signal Duration 20 Ms At 10 Mhz Sweep Span. Noise Floor: Less Than -100 Dbm In Band Up To 3000 Mhz Less Than -95 Dbm In 3000-4500mhz Band Less Than -90 Dbm In The 4500-6200 Mhz Band Input Impedance 50 Ohms Swr Less Than 1.5 In The Operating Frequency Range Internal Attenuator 0-30db Attenuation Error: Up To 10 Db 2 Db From 10 To 20 Db 5 Db From 20 To 30 Db 8 Db Built-in Tracking Generator Frequency Range 35-6200 Mhz Tracking Generator Output Power -15-25 Dbm Accuracy Of Signal Display Within Dynamic Range 2 Db Maximum Input Power At 0 Db Attenuator +10 Dbm Attenuator Greater Than 20 Db +20 Dbm Measured Maximum Input Signal +10 Dbm Maximum Rf Input Dc Voltage 5v Maximum Supply Current 450ma When Running On Battery