The Aeroflex 3500 combines many of the features of a benchtop radio test set with the features of a Frequency Domain Reflectomer (FDR) into a lightweight, rugged and portable platform. The 3500 is perfect for testing AM and FM radio transceivers, whether on a bench, installed in a vehicle, or in some remote location. Version 2.4.1 Firmware Upgrade is Now Available! Features Quick Drive By Testing to isolate radio installation failures Isolate cable and antenna problems using Frequency Domain Reflectometry (FDR) Benchtop type radio tests 2 MHz to 1 GHz operation Transmitter and Receiver testing AM and FM Modulation meter Accurate RSSI measurement Measuring high power (20 watts without an external attenuator, up to 150 watts with an external attenuator) AF Generator and Modulator RF Error meter SINAD and Distortion measurement Distance To Fault (DTF) measurement VSWR measurement